# HG changeset patch # User jwe # Date 981782142 0 # Node ID e42e28db4dda267a03a03b564b642d4a2fe46327 # Parent 56522edd5c33169929c6e8bf2a5171b82166f3ad [project @ 2001-02-10 05:14:17 by jwe] diff --git a/readline/CHANGELOG b/readline/CHANGELOG new file mode 100644 --- /dev/null +++ b/readline/CHANGELOG @@ -0,0 +1,447 @@ +[Readline-specific changelog. Descriptions of changes to the source are + found in the bash changelog.] + + 6/9 + --- +Makefile.in + - quote value of ${INSTALL_DATA} when passing it to makes in + subdirectories + + 7/1 + --- +Makefile.in + - don't pass INSTALL_DATA to a make in the `doc' subdirectory; let + autoconf set the value itself in the Makefile + - removed a stray `-' before $(RANLIB) in the `install' recipe + +doc/Makefile.in + - add a VPATH assignment so the documentation is not remade if it's + already up-to-date in the distribution + +configure.in + - call AC_SUBST(LOCAL_LDFLAGS), since Makefile.in contains + @LOCAL_LDFLAGS@ + + 7/9 + --- + +config.h.in + - add define lines for STRUCT_WINSIZE_IN_SYS_IOCTL and + STRUCT_WINSIZE_IN_TERMIOS + +configure.in + - call BASH_STRUCT_WINSIZE to look for the definition of + `struct winsize' + + 7/17 + ---- +configure.in + - call AC_MINIX + +config.h.in + - add define line for AC_MINIX + + 7/18 + ---- +Makefile.in + - add `install-shared' and `uninstall-shared' targets + + 8/4 + --- +Makefile.in + - install and uninstall libhistory.a in the `install' and + `uninstall' targets + + 9/4 + --- +configure.in + - bumped LIBVERSION up to 2.1.1, indicating that this is patch + level 1 to release 2.1 + + + 9/16 + ---- +Makefile.in + - `make distclean' now descends into the `examples' subdir + +doc/Makefile.in + - the `distclean' and `maintainer-clean' targets should remove + Makefile + +examples/Makefile.in + - added the various clean targets + + 4/2 + --- +configure.in + - bumped LIBVERSION up to 2.2 + + 4/18 + ---- +[readline-2.2 released] + + 4/20 + ---- +Makefile.in + - make `libhistory.a' a dependency of `install' + - fixed a typo in the recipe for `install' that copied libreadline.a + to libhistory.old right after installing it + + 4/27 + ---- +doc/Makefile.in + - install {readline,history}.info out of the source directory if + they are not found in the current (build) directory -- only an + issue if the libraries are built in a different directory than + the source directory + + 5/1 + --- +support/shobj-conf + - script from the bash distribution to do shared object and library + configuration + +shlib/Makefile.in + - new directory and makefile to handle building shared versions of + libreadline and libhistory, controlled by support/shobj-conf + + 5/7 + --- +doc/Makefile.in + - set SHELL to /bin/sh, rather than relying on make to be correct + + 5/14 + ---- +savestring.c + - new file, moved from shell.c, for backwards compatibility + +Makefile.in, shlib/Makefile.in + - make sure savestring.c is compiled and added to libreadline and + libhistory + +[THERE ARE NO MORE #ifdef SHELL LINES IN THE C SOURCE FILES.] + + 5/15 + ---- +README + - updated description of shared library creation for the new scheme + +[THERE ARE NO MORE #ifdef SHELL LINES IN ANY OF THE SOURCE FILES.] + +Makefile.in + - bumped SHLIB_MAJOR up to 4 since we've augmented the library + API + - rlconf.h is now one of the installed headers, so applications can + find out whether things like vi-mode are available in the installed + libreadline + + 5/20 + ---- +configure.in + - changed RL_LIBRARY_VERSION to 4.0 to match the version of the + installed shared libraries + + 6/5 + --- +rlstdc.h + - new file + +Makefile.in + - rlstdc.h is now one of the installed headers + + 8/3 + --- +shlib/Makefile.in + - made the suffix rule that creates xx.so from xx.c write the + compiler output to `a.o', which is then mv'd to xx.so, because + some compilers (Sun WSpro 4.2, for example) don't allow any + suffixes other than `.o' for `cc -c' (not even `a.out') + + 9/15 + ---- + +Makefile.in + - AR and ARFLAGS are now substituted by configure, used in recipes + that build the libraries + +configure.in + - use AC_CHECK_PROG to check for ar + - set ARFLAGS if it has not already been set in the environment + + 10/5 + ---- +Makefile.in + - removed savestring.o from object file list + + 10/28 + ----- +shlib/Makefile.in + - don't use a fixed filename in the .c.so suffix rule to avoid + problems with parallel makes + + 12/21 + ----- +support/shlib-install + - new script to install shared readline and history libraries + +shlib/Makefile.in + - changed to call shlib-install for install and uninstall targets + +[readline-4.0-beta1 frozen] + + 12/22 + ----- +configure.in + - call AC_SUBST for SHOBJ_XLDFLAGS and SHLIB_LIBS + +shlib/Makefile.in + - SHOBJ_XLDFLAGS and SHLIB_LIBS are now substituted by configure + - add $(SHLIB_LIBS) at end of command line that builds the shared + libraries (currently needed only by AIX 4.2) + + 12/31 + ----- +MANIFEST, MANIFEST.doc + - the TOC html files are no longer generated and no longer part of + the distribution + + 2/18/1999 + --------- +configure.in + - set MAKE_SHELL to /bin/sh and substitute into the Makefiles + +Makefile.in,{doc,examples,shlib}/Makefile.in + - set SHELL from @MAKE_SHELL@ + +[readline-4.0 released] + + 3/11 + ---- +doc/Makefile.in + - removed references to HTMLTOC, since separate HTML table-of-contents + files are no longer created + +examples/Makefile.in + - remove `*.exe' in clean target for MS-DOS + +Makefile.in + - make `readline' target depend on ./libreadline.a + - configure now substitutes TERMCAP_LIB into Makefile.in + - use ${TERMCAP_LIB} instead of -ltermcap in recipe for `readline' + - clean target now removes readline and readline.exe in case they + get built + +configure.in + - use `pwd.exe' to set BUILD_DIR on MS-DOS DJGPP + + 3/15 + ---- +support/shlib-install + - Irix 5.x and Irix 6.x should install shared libraries like Solaris 2 + - changes for installing on hp-ux 1[01].x + + 3/23 + ---- +configure.in + - make sure that the $CC argument to shobj-conf is quoted + + 4/8 + --- + +xmalloc.h, rlprivate.h, rlshell.h + - new files + +Makefile.in,shlib/Makefile.in + - add dependencies on xmalloc.h, rlshell.h + - add xmalloc.h, rlprivate.h, rlshell.h to list of header files + +MANIFEST + - add xmalloc.h, rlprivate.h, rlshell.h + + 4/9 + --- +Makefile.in,shlib/Makefile.in + - add dependencies on rlprivate.h + + 4/13 + ---- +doc/Makefile.in + - add variable, PSDVI, which is the desired resolution of the + generated postscript files. Set to 300 because I don't have + any 600-dpi printers + - set LANGUAGE= before calling makeinfo, so messages are in English + - add rluserman.{info,dvi,ps,html} to appropriate variables + - add rules to create rluserman.{info,dvi,ps,html} + - install and uninstall rluserman.info, but don't update the directory + file in $(infodir) yet + +MANIFEST + - add doc/rluserman.{texinfo,info,dvi,ps,html} + + 4/30 + ---- +configure.in + - updated library version to 4.1 + + 5/3 + --- +configure.in + - SHLIB_MAJOR and SHLIB_MINOR shared library version numbers are + constructed from $LIBRARY_VERSION and substituted into Makefiles + + 5/5 + --- +support/shlib-install + - OSF/1 installs shared libraries like Solaris + +Makefile.in + - broke the header file install and uninstall into two new targets: + install-headers and uninstall-headers + - install and uninstall depend on install-headers and uninstall-headers + respectively + - changed install-shared and uninstall-shared targets to depend on + install-headers and uninstall-headers, respectively, so users may + choose to install only the shared libraries. I'm not sure about + the uninstall one yet -- maybe it should check whether or not + the static libraries are installed and not remove the header files + if they are + + 9/3 + --- +configure.in, config.h.in + - added test for memmove (for later use) + - changed version to 4.1-beta1 + + 9/13 + ---- +examples/rlfe.c + - Per Bothner's `rlfe' readline front-end program + +examples/Makefile.in + - added rules to build rlfe + + 9/21 + ---- +support/shlib-install + - changes to handle FreeBSD-3.x elf or a.out shared libraries, which + have different semantics and need different naming conventions + + 1/24/2000 + --------- +doc/Makefile.in + - remove *.bt and *.bts on `make clean' + + 2/4 + --- + + +configure.in + - changed LIBVERSION to 4.1-beta5 + + 3/17/2000 + --------- +[readline-4.1 released] + + 3/23 + ---- +Makefile.in + - remove the `-t' argument to ranlib in the install recipe; some + ranlibs don't have it and attempt to create a file named `-t' + + 3/27 + ---- +support/shlib-install + - install shared libraries unwritable by anyone on HP-UX + - changed symlinks to relative pathnames on all platforms + +shlib/Makefile.in + - added missing `includedir' assignment, substituted by configure + +Makefile.in + - added missing @SET_MAKE@ so configure can set $MAKE appropriately + +configure.in + - add call to AC_PROG_MAKE_SET + + 8/30 + ---- +shlib/Makefile.in + - change the soname bound into the shared libraries, so it includes + only the major version number. If it includes the minor version, + programs depending on it must be rebuilt (which may or may not be + a bad thing) + + 9/6 + --- +examples/rlfe.c + - add -l option to log input and output (-a option appends to logfile) + - add -n option to set readline application name + - add -v, -h options for version and help information + - change a few things because getopt() is now used to parse arguments + + 9/12 + ---- +support/shlib-install + - fix up the libname on HPUX 11 + + 10/18 + ----- +configure.in + - changed library version to 4.2-alpha + + 10/30 + ----- +configure.in + - add -fsigned-char to LOCAL_CFLAGS for Linux running on the IBM + S/390 + +Makefile.in + - added new file, rltypedefs.h, installed by default with `make install' + + 11/2 + ---- +compat.c + - new file, with backwards-compatibility function definitions + +Makefile.in,shlib/Makefile.in + - make sure that compat.o/compat.so are built and linked apppropriately + +support/shobj-conf + - picked up bash version, which means that shared libs built on + linux and BSD/OS 4.x will have an soname that does not include + the minor version number + + 11/13 + ----- +examples/rlfe.c + - rlfe can perform filename completion for relative pathnames in the + inferior process's context if the OS supports /proc/PID/cwd (linux + does it OK, Solaris is slightly warped, none of the BSDs have it) + + 11/17/2000 + ---------- +[readline-4.2-alpha released] + + 11/27 + ----- +Makefile.in,shlib/Makefile.in + - added dependencies for rltypedefs.h + +shlib/Makefile.in + - changed dependencies on histlib.h to $(topdir)/histlib.h + + 1/22 + ---- +configure.in + - changed release version to 4.2-beta + + 2/2 + --- +examples/Makefile.in + - build histexamp as part of the examples + + 2/5 + --- +doc/Makefile.in + - don't remove the dvi, postscript, html, info, and text `objects' + on a `make distclean', only on a `make maintainer-clean' diff --git a/readline/CHANGES b/readline/CHANGES new file mode 100644 --- /dev/null +++ b/readline/CHANGES @@ -0,0 +1,423 @@ +This document details the changes between this version, readline-4.2, +and the previous version, readline-4.1. + +1. Changes to Readline + +a. When setting the terminal attributes on systems using `struct termio', + readline waits for output to drain before changing the attributes. + +b. A fix was made to the history word tokenization code to avoid attempts to + dereference a null pointer. + +c. Readline now defaults rl_terminal_name to $TERM if the calling application + has left it unset, and tries to initialize with the resultant value. + +d. Instead of calling (*rl_getc_function)() directly to get input in certain + places, readline now calls rl_read_key() consistently. + +e. Fixed a bug in the completion code that allowed a backslash to quote a + single quote inside a single-quoted string. + +f. rl_prompt is no longer assigned directly from the argument to readline(), + but uses memory allocated by readline. This allows constant strings to + be passed to readline without problems arising when the prompt processing + code wants to modify the string. + +g. Fixed a bug that caused non-interactive history searches to return the + wrong line when performing multiple searches backward for the same string. + +h. Many variables, function arguments, and function return values are now + declared `const' where appropriate, to improve behavior when linking with + C++ code. + +i. The control character detection code now works better on systems where + `char' is unsigned by default. + +j. The vi-mode numeric argument is now capped at 999999, just like emacs mode. + +k. The Function, CPFunction, CPPFunction, and VFunction typedefs have been + replaced with a set of specific prototyped typedefs, though they are + still in the readline header files for backwards compatibility. + +m. Nearly all of the (undocumented) internal global variables in the library + now have an _rl_ prefix -- there were a number that did not, like + screenheight, screenwidth, alphabetic, etc. + +n. The ding() convenience function has been renamed to rl_ding(), though the + old function is still defined for backwards compatibility. + +o. The completion convenience functions filename_completion_function, + username_completion_function, and completion_matches now have an rl_ + prefix, though the old names are still defined for backwards compatibility. + +p. The functions shared by readline and bash (linkage is satisfied from bash + when compiling with bash, and internally otherwise) now have an sh_ prefix. + +q. Changed the shared library creation procedure on Linux and BSD/OS 4.x so + that the `soname' contains only the major version number rather than the + major and minor numbers. + +r. Fixed a redisplay bug that occurred when the prompt spanned more than one + physical line and contained invisible characters. + +s. Added a missing `includedir' variable to the Makefile. + +t. When installing the shared libraries, make sure symbolic links are relative. + +u. Added configure test so that it can set `${MAKE}' appropriately. + +v. Fixed a bug in rl_forward that could cause the point to be set to before + the beginning of the line in vi mode. + +w. Fixed a bug in the callback read-char interface to make it work when a + readline function pushes some input onto the input stream with + rl_execute_next (like the incremental search functions). + +x. Fixed a file descriptor leak in the history file manipulation code that + was tripped when attempting to truncate a non-regular file (like + /dev/null). + +y. Changes to make all of the exported readline functions declared in + readline.h have an rl_ prefix (rltty_set_default_bindings is now + rl_tty_set_default_bindings, crlf is now rl_crlf, etc.) + +z. The formatted documentation included in the base readline distribution + is no longer removed on a `make distclean'. + +2. New Features in Readline + +a. The blink timeout for paren matching is now settable by applications. + +b. _rl_executing_macro has been renamed to rl_executing_macro, which means + it's now part of the public interface. + +c. Readline has a new variable, rl_readline_state, which is a bitmap that + encapsulates the current state of the library; intended for use by + callbacks and hook functions. + +d. rlfe has a new -l option to log input and output (-a appends to logfile), + a new -n option to set the readline application name, and -v and -h + options for version and help information. + +e. rlfe can now perform filename completion for the inferior process if the + OS has a /proc//cwd that can be read with readlink(2) to get the + inferior's current working directory. + +f. A new file, rltypedefs.h, contains the new typedefs for function pointers + and is installed by `make install'. + +g. New application-callable function rl_set_prompt(const char *prompt): + expands its prompt string argument and sets rl_prompt to the result. + +h. New application-callable function rl_set_screen_size(int rows, int cols): + public method for applications to set readline's idea of the screen + dimensions. + +i. The history example program (examples/histexamp.c) is now built as one + of the examples. + +j. The documentation has been updated to cover nearly all of the public + functions and variables declared in readline.h. + +------------------------------------------------------------------------------- +This document details the changes between this version, readline-4.1, +and the previous version, readline-4.0. + +1. Changes to Readline + +a. Changed the HTML documents so that the table-of-contents is no longer + a separate file. + +b. Changes to the shared object configuration for: Irix 5.x, Irix 6.x, + OSF/1. + +c. The shared library major and minor versions are now constructed + automatically by configure and substituted into the makefiles. + +d. It's now possible to install the shared libraries separately from the + static libraries. + +e. The history library tries to truncate the history file only if it is a + regular file. + +f. A bug that caused _rl_dispatch to address negative array indices on + systems with signed chars was fixed. + +g. rl-yank-nth-arg now leaves the history position the same as when it was + called. + +h. Changes to the completion code to handle MS-DOS drive-letter:pathname + filenames. + +i. Completion is now case-insensitive by default on MS-DOS. + +j. Fixes to the history file manipulation code for MS-DOS. + +k. Readline attempts to bind the arrow keys to appropriate defaults on MS-DOS. + +l. Some fixes were made to the redisplay code for better operation on MS-DOS. + +m. The quoted-insert code will now insert tty special chars like ^C. + +n. A bug was fixed that caused the display code to reference memory before + the start of the prompt string. + +o. More support for __EMX__ (OS/2). + +p. A bug was fixed in readline's signal handling that could cause infinite + recursion in signal handlers. + +q. A bug was fixed that caused the point to be less than zero when rl_forward + was given a very large numeric argument. + +r. The vi-mode code now gets characters via the application-settable value + of rl_getc_function rather than calling rl_getc directly. + +s. The history file code now uses O_BINARY mode when reading and writing + the history file on cygwin32. + +t. Fixed a bug in the redisplay code for lines with more than 256 line + breaks. + +u. A bug was fixed which caused invisible character markers to not be + stripped from the prompt string if the terminal was in no-echo mode. + +v. Readline no longer tries to get the variables it needs for redisplay + from the termcap entry if the calling application has specified its + own redisplay function. Readline treats the terminal as `dumb' in + this case. + +w. Fixes to the SIGWINCH code so that a multiple-line prompt with escape + sequences is redrawn correctly. + +x. Changes to the install and install-shared targets so that the libraries + and header files are installed separately. + +2. New Features in Readline + +a. A new Readline `user manual' is in doc/rluserman.texinfo. + +b. Parentheses matching is now always compiled into readline, and enabled + or disabled when the value of the `blink-matching-paren' variable is + changed. + +c. MS-DOS systems now use ~/_inputrc as the last-ditch inputrc filename. + +d. MS-DOS systems now use ~/_history as the default history file. + +e. history-search-{forward,backward} now leave the point at the end of the + line when the string to search for is empty, like + {reverse,forward}-search-history. + +f. history-search-{forward,backward} now leave the last history line found + in the readline buffer if the second or subsequent search fails. + +g. New function for use by applications: rl_on_new_line_with_prompt, used + when an application displays the prompt itself before calling readline(). + +h. New variable for use by applications: rl_already_prompted. An application + that displays the prompt itself before calling readline() must set this to + a non-zero value. + +i. A new variable, rl_gnu_readline_p, always 1. The intent is that an + application can verify whether or not it is linked with the `real' + readline library or some substitute. + +j. Per Bothner's `rlfe' (pronounced `Ralphie') readline front-end program + is included in the examples subdirectory, though it is not built + by default. + +------------------------------------------------------------------------------- +This document details the changes between this version, readline-4.0, +and the previous version, readline-2.2. + +1. Changes to Readline + +a. The version number is now 4.0, to match the major and minor version + numbers on the shared readline and history libraries. Future + releases will maintain the identical numbering. + +b. Fixed a typo in the `make install' recipe that copied libreadline.a + to libhistory.old right after installing it. + +c. The readline and history info files are now installed out of the source + directory if they are not found in the build directory. + +d. The library no longer exports a function named `savestring' -- backwards + compatibility be damned. + +e. There is no longer any #ifdef SHELL code in the source files. + +f. Some changes were made to the key binding code to fix memory leaks and + better support Win32 systems. + +g. Fixed a silly typo in the paren matching code -- it's microseconds, not + milliseconds. + +h. The readline library should be compilable by C++ compilers. + +i. The readline.h public header file now includes function prototypes for + all readline functions, and some changes were made to fix errors in the + source files uncovered by the use of prototypes. + +j. The maximum numeric argument is now clamped at 1000000. + +k. Fixes to rl_yank_last_arg to make it behave better. + +l. Fixed a bug in the display code that caused core dumps if the prompt + string length exceeded 1024 characters. + +m. The menu completion code was fixed to properly insert a single completion + if there is only one match. + +n. A bug was fixed that caused the display code to improperly display tabs + after newlines. + +o. A fix was made to the completion code in which a typo caused the wrong + value to be passed to the function that computed the longest common + prefix of the list of matches. + +p. The completion code now checks the value of rl_filename_completion_desired, + which is set by application-supplied completion functions to indicate + that filename completion is being performed, to decide whether or not to + call an application-supplied `ignore completions' function. + +q. Code was added to the history library to catch history substitutions + using `&' without a previous history substitution or search having been + performed. + + +2. New Features in Readline + +a. There is a new script, support/shobj-conf, to do system-specific shared + object and library configuration. It generates variables for configure + to substitute into makefiles. The README file provides a detailed + explanation of the shared library creation process. + +b. Shared libraries and objects are now built in the `shlib' subdirectory. + There is a shlib/Makefile.in to control the build process. `make shared' + from the top-level directory is still the right way to build shared + versions of the libraries. + +c. rlconf.h is now installed, so applications can find out which features + have been compiled into the installed readline and history libraries. + +d. rlstdc.h is now an installed header file. + +e. Many changes to the signal handling: + o Readline now catches SIGQUIT and cleans up the tty before returning; + o A new variable, rl_catch_signals, is available to application writers + to indicate to readline whether or not it should install its own + signal handlers for SIGINT, SIGTERM, SIGQUIT, SIGALRM, SIGTSTP, + SIGTTIN, and SIGTTOU; + o A new variable, rl_catch_sigwinch, is available to application + writers to indicate to readline whether or not it should install its + own signal handler for SIGWINCH, which will chain to the calling + applications's SIGWINCH handler, if one is installed; + o There is a new function, rl_free_line_state, for application signal + handlers to call to free up the state associated with the current + line after receiving a signal; + o There is a new function, rl_cleanup_after_signal, to clean up the + display and terminal state after receiving a signal; + o There is a new function, rl_reset_after_signal, to reinitialize the + terminal and display state after an application signal handler + returns and readline continues + +f. There is a new function, rl_resize_terminal, to reset readline's idea of + the screen size after a SIGWINCH. + +g. New public functions: rl_save_prompt and rl_restore_prompt. These were + previously private functions with a `_' prefix. These functions are + used when an application wants to write a message to the `message area' + with rl_message and have the prompt restored correctly when the message + is erased. + +h. New function hook: rl_pre_input_hook, called just before readline starts + reading input, after initialization. + +i. New function hook: rl_display_matches_hook, called when readline would + display the list of completion matches. The new function + rl_display_match_list is what readline uses internally, and is available + for use by application functions called via this hook. + +j. New bindable function, delete-char-or-list, like tcsh. + +k. A new variable, rl_erase_empty_line, which, if set by an application using + readline, will cause readline to erase, prompt and all, lines on which the + only thing typed was a newline. + +l. There is a new script, support/shlib-install, to install and uninstall + the shared readline and history libraries. + +m. A new bindable variable, `isearch-terminators', which is a string + containing the set of characters that should terminate an incremental + search without being executed as a command. + +n. A new bindable function, forward-backward-delete-char. + +------------------------------------------------------------------------------- +This document details the changes between this version, readline-2.2, +and the previous version, readline-2.1. + +1. Changes to Readline + +a. Added a missing `extern' to a declaration in readline.h that kept + readline from compiling cleanly on some systems. + +b. The history file is now opened with mode 0600 when it is written for + better security. + +c. Changes were made to the SIGWINCH handling code so that prompt redisplay + is done better. + +d. ^G now interrupts incremental searches correctly. + +e. A bug that caused a core dump when the set of characters to be quoted + when completing words was empty was fixed. + +f. Fixed a problem in the readline test program rltest.c that caused a core + dump. + +g. The code that handles parser directives in inputrc files now displays + more error messages. + +h. The history expansion code was fixed so that the appearance of the + history comment character at the beginning of a word inhibits history + expansion for that word and the rest of the input line. + +i. The code that prints completion listings now behaves better if one or + more of the filenames contains non-printable characters. + +j. The time delay when showing matching parentheses is now 0.5 seconds. + + +2. New Features in Readline + +a. There is now an option for `iterative' yank-last-arg handline, so a user + can keep entering `M-.', yanking the last argument of successive history + lines. + +b. New variable, `print-completions-horizontally', which causes completion + matches to be displayed across the screen (like `ls -x') rather than up + and down the screen (like `ls'). + +c. New variable, `completion-ignore-case', which causes filename completion + and matching to be performed case-insensitively. + +d. There is a new bindable command, `magic-space', which causes history + expansion to be performed on the current readline buffer and a space to + be inserted into the result. + +e. There is a new bindable command, `menu-complete', which enables tcsh-like + menu completion (successive executions of menu-complete insert a single + completion match, cycling through the list of possible completions). + +f. There is a new bindable command, `paste-from-clipboard', for use on Win32 + systems, to insert the text from the Win32 clipboard into the editing + buffer. + +g. The key sequence translation code now understands printf-style backslash + escape sequences, including \NNN octal escapes. These escape sequences + may be used in key sequence definitions or macro values. + +h. An `$include' inputrc file parser directive has been added. diff --git a/readline/USAGE b/readline/USAGE new file mode 100644 --- /dev/null +++ b/readline/USAGE @@ -0,0 +1,37 @@ +From rms@gnu.org Thu Jul 22 20:37:55 1999 +Flags: 10 +Return-Path: rms@gnu.org +Received: from arthur.INS.CWRU.Edu (root@arthur.INS.CWRU.Edu [129.22.8.215]) by odin.INS.CWRU.Edu with ESMTP (8.8.6+cwru/CWRU-2.4-ins) + id UAA25349; Thu, 22 Jul 1999 20:37:54 -0400 (EDT) (from rms@gnu.org for ) +Received: from nike.ins.cwru.edu (root@nike.INS.CWRU.Edu [129.22.8.219]) by arthur.INS.CWRU.Edu with ESMTP (8.8.8+cwru/CWRU-3.6) + id UAA05311; Thu, 22 Jul 1999 20:37:51 -0400 (EDT) (from rms@gnu.org for ) +Received: from pele.santafe.edu (pele.santafe.edu [192.12.12.119]) by nike.ins.cwru.edu with ESMTP (8.8.7/CWRU-2.5-bsdi) + id UAA13350; Thu, 22 Jul 1999 20:37:50 -0400 (EDT) (from rms@gnu.org for ) +Received: from wijiji.santafe.edu (wijiji [192.12.12.5]) + by pele.santafe.edu (8.9.1/8.9.1) with ESMTP id SAA10831 + for ; Thu, 22 Jul 1999 18:37:47 -0600 (MDT) +Received: (from rms@localhost) + by wijiji.santafe.edu (8.9.1b+Sun/8.9.1) id SAA01089; + Thu, 22 Jul 1999 18:37:46 -0600 (MDT) +Date: Thu, 22 Jul 1999 18:37:46 -0600 (MDT) +Message-Id: <199907230037.SAA01089@wijiji.santafe.edu> +X-Authentication-Warning: wijiji.santafe.edu: rms set sender to rms@gnu.org using -f +From: Richard Stallman +To: chet@nike.ins.cwru.edu +Subject: Use of Readline +Reply-to: rms@gnu.org + +I think Allbery's suggestion is a good one. So please add this text +in a suitable place. Please don't put it in the GPL itself; that +should be the same as the GPL everywhere else. Putting it in the +README and/or the documentation would be a good idea. + + +====================================================================== +Our position on the use of Readline through a shared-library linking +mechanism is that there is no legal difference between shared-library +linking and static linking--either kind of linking combines various +modules into a single larger work. The conditions for using Readline +in a larger work are stated in section 3 of the GNU GPL. + + diff --git a/readline/doc/history.dvi b/readline/doc/history.dvi deleted file mode 100644 index c853b0165ddeecbddc5da85bdc0fa2b6e25da48f..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 GIT binary patch literal 0 Hc$@ - - - -GNU History Library - - -

GNU History Library

-

Edition 4.2-beta, for History Library Version 4.2-beta.

-

Feb 2001

-
Brian Fox, Free Software Foundation
-
Chet Ramey, Case Western Reserve University
-

-

-

Table of Contents

- -

- -

-This document describes the GNU History library, a programming tool that -provides a consistent user interface for recalling lines of previously -typed input. - -

-

-Published by the Free Software Foundation
-59 Temple Place, Suite 330,
-Boston, MA 02111 USA - -

-

-Permission is granted to make and distribute verbatim copies of -this manual provided the copyright notice and this permission notice -are preserved on all copies. - -

-

-Permission is granted to copy and distribute modified versions of this -manual under the conditions for verbatim copying, provided that the entire -resulting derived work is distributed under the terms of a permission -notice identical to this one. - -

-

-Permission is granted to copy and distribute translations of this manual -into another language, under the above conditions for modified versions, -except that this permission notice may be stated in a translation approved -by the Free Software Foundation. - -

-

-Copyright (C) 1988-2001 Free Software Foundation, Inc. - -

- - - -

Using History Interactively

- -

-This chapter describes how to use the GNU History Library interactively, -from a user's standpoint. It should be considered a user's guide. For -information on using the GNU History Library in your own programs, -see section Programming with GNU History. - -

- - - - - -

History Expansion

-

- - -

-

-The History library provides a history expansion feature that is similar -to the history expansion provided by csh. This section -describes the syntax used to manipulate the history information. - -

-

-History expansions introduce words from the history list into -the input stream, making it easy to repeat commands, insert the -arguments to a previous command into the current input line, or -fix errors in previous commands quickly. - -

-

-History expansion takes place in two parts. The first is to determine -which line from the history list should be used during substitution. -The second is to select portions of that line for inclusion into the -current one. The line selected from the history is called the -event, and the portions of that line that are acted upon are -called words. Various modifiers are available to manipulate -the selected words. The line is broken into words in the same fashion -that Bash does, so that several words -surrounded by quotes are considered one word. -History expansions are introduced by the appearance of the -history expansion character, which is `!' by default. - -

- - - - - - -

Event Designators

-

- - -

-

-An event designator is a reference to a command line entry in the -history list. - - -

-
- -
! -
-Start a history substitution, except when followed by a space, tab, -the end of the line, `=' or `('. - -
!n -
-Refer to command line n. - -
!-n -
-Refer to the command n lines back. - -
!! -
-Refer to the previous command. This is a synonym for `!-1'. - -
!string -
-Refer to the most recent command starting with string. - -
!?string[?] -
-Refer to the most recent command containing string. The trailing -`?' may be omitted if the string is followed immediately by -a newline. - -
^string1^string2^ -
-Quick Substitution. Repeat the last command, replacing string1 -with string2. Equivalent to -!!:s/string1/string2/. - -
!# -
-The entire command line typed so far. - -
- - - -

Word Designators

- -

-Word designators are used to select desired words from the event. -A `:' separates the event specification from the word designator. It -may be omitted if the word designator begins with a `^', `$', -`*', `-', or `%'. Words are numbered from the beginning -of the line, with the first word being denoted by 0 (zero). Words are -inserted into the current line separated by single spaces. - -

-

-For example, - -

-
- -
!! -
-designates the preceding command. When you type this, the preceding -command is repeated in toto. - -
!!:$ -
-designates the last argument of the preceding command. This may be -shortened to !$. - -
!fi:2 -
-designates the second argument of the most recent command starting with -the letters fi. -
- -

-Here are the word designators: - -

- -
0 (zero) -
-The 0th word. For many applications, this is the command word. - -
n -
-The nth word. - -
^ -
-The first argument; that is, word 1. - -
$ -
-The last argument. - -
% -
-The word matched by the most recent `?string?' search. - -
x-y -
-A range of words; `-y' abbreviates `0-y'. - -
* -
-All of the words, except the 0th. This is a synonym for `1-$'. -It is not an error to use `*' if there is just one word in the event; -the empty string is returned in that case. - -
x* -
-Abbreviates `x-$' - -
x- -
-Abbreviates `x-$' like `x*', but omits the last word. - -
- -

-If a word designator is supplied without an event specification, the -previous command is used as the event. - -

- - -

Modifiers

- -

-After the optional word designator, you can add a sequence of one or more -of the following modifiers, each preceded by a `:'. - -

-
- -
h -
-Remove a trailing pathname component, leaving only the head. - -
t -
-Remove all leading pathname components, leaving the tail. - -
r -
-Remove a trailing suffix of the form `.suffix', leaving -the basename. - -
e -
-Remove all but the trailing suffix. - -
p -
-Print the new command but do not execute it. - -
s/old/new/ -
-Substitute new for the first occurrence of old in the -event line. Any delimiter may be used in place of `/'. -The delimiter may be quoted in old and new -with a single backslash. If `&' appears in new, -it is replaced by old. A single backslash will quote -the `&'. The final delimiter is optional if it is the last -character on the input line. - -
& -
-Repeat the previous substitution. - -
g -
-Cause changes to be applied over the entire event line. Used in -conjunction with `s', as in gs/old/new/, -or with `&'. - -
- - - -

Programming with GNU History

- -

-This chapter describes how to interface programs that you write -with the GNU History Library. -It should be considered a technical guide. -For information on the interactive use of GNU History, see section Using History Interactively. - -

- - - - - -

Introduction to History

- -

-Many programs read input from the user a line at a time. The GNU -History library is able to keep track of those lines, associate arbitrary -data with each line, and utilize information from previous lines in -composing new ones. - -

-

-The programmer using the History library has available functions -for remembering lines on a history list, associating arbitrary data -with a line, removing lines from the list, searching through the list -for a line containing an arbitrary text string, and referencing any line -in the list directly. In addition, a history expansion function -is available which provides for a consistent user interface across -different programs. - -

-

-The user using programs written with the History library has the -benefit of a consistent user interface with a set of well-known -commands for manipulating the text of previous lines and using that text -in new commands. The basic history manipulation commands are similar to -the history substitution provided by csh. - -

-

-If the programmer desires, he can use the Readline library, which -includes some history manipulation by default, and has the added -advantage of command line editing. - -

-

-Before declaring any functions using any functionality the History -library provides in other code, an application writer should include -the file <readline/history.h> in any file that uses the -History library's features. It supplies extern declarations for all -of the library's public functions and variables, and declares all of -the public data structures. - -

- - -

History Storage

- -

-The history list is an array of history entries. A history entry is -declared as follows: - -

- -
-typedef void *histdata_t;
-
-typedef struct _hist_entry {
-  char *line;
-  histdata_t data;
-} HIST_ENTRY;
-
- -

-The history list itself might therefore be declared as - -

- -
-HIST_ENTRY **the_history_list;
-
- -

-The state of the History library is encapsulated into a single structure: - -

- -
-/* A structure used to pass around the current state of the history. */
-typedef struct _hist_state {
-  HIST_ENTRY **entries; /* Pointer to the entries themselves. */
-  int offset;           /* The location pointer within this array. */
-  int length;           /* Number of elements within this array. */
-  int size;             /* Number of slots allocated to this array. */
-  int flags;
-} HISTORY_STATE;
-
- -

-If the flags member includes HS_STIFLED, the history has been -stifled. - -

- - -

History Functions

- -

-This section describes the calling sequence for the various functions -present in GNU History. - -

- - - - - -

Initializing History and State Management

- -

-This section describes functions used to initialize and manage -the state of the History library when you want to use the history -functions in your program. - -

-

-

-
Function: void using_history (void) -
-Begin a session in which the history functions might be used. This -initializes the interactive variables. -
- -

-

-

-
Function: HISTORY_STATE * history_get_history_state (void) -
-Return a structure describing the current state of the input history. -
- -

-

-

-
Function: void history_set_history_state (HISTORY_STATE *state) -
-Set the state of the history list according to state. -
- -

- - -

History List Management

- -

-These functions manage individual entries on the history list, or set -parameters managing the list itself. - -

-

-

-
Function: void add_history (const char *string) -
-Place string at the end of the history list. The associated data -field (if any) is set to NULL. -
- -

-

-

-
Function: HIST_ENTRY * remove_history (int which) -
-Remove history entry at offset which from the history. The -removed element is returned so you can free the line, data, -and containing structure. -
- -

-

-

-
Function: HIST_ENTRY * replace_history_entry (int which, const char *line, histdata_t data) -
-Make the history entry at offset which have line and data. -This returns the old entry so you can dispose of the data. In the case -of an invalid which, a NULL pointer is returned. -
- -

-

-

-
Function: void clear_history (void) -
-Clear the history list by deleting all the entries. -
- -

-

-

-
Function: void stifle_history (int max) -
-Stifle the history list, remembering only the last max entries. -
- -

-

-

-
Function: int unstifle_history (void) -
-Stop stifling the history. This returns the previous amount the -history was stifled. The value is positive if the history was -stifled, negative if it wasn't. -
- -

-

-

-
Function: int history_is_stifled (void) -
-Returns non-zero if the history is stifled, zero if it is not. -
- -

- - -

Information About the History List

- -

-These functions return information about the entire history list or -individual list entries. - -

-

-

-
Function: HIST_ENTRY ** history_list (void) -
-Return a NULL terminated array of HIST_ENTRY * which is the -current input history. Element 0 of this list is the beginning of time. -If there is no history, return NULL. -
- -

-

-

-
Function: int where_history (void) -
-Returns the offset of the current history element. -
- -

-

-

-
Function: HIST_ENTRY * current_history (void) -
-Return the history entry at the current position, as determined by -where_history(). If there is no entry there, return a NULL -pointer. -
- -

-

-

-
Function: HIST_ENTRY * history_get (int offset) -
-Return the history entry at position offset, starting from -history_base (see section History Variables). -If there is no entry there, or if offset -is greater than the history length, return a NULL pointer. -
- -

-

-

-
Function: int history_total_bytes (void) -
-Return the number of bytes that the primary history entries are using. -This function returns the sum of the lengths of all the lines in the -history. -
- -

- - -

Moving Around the History List

- -

-These functions allow the current index into the history list to be -set or changed. - -

-

-

-
Function: int history_set_pos (int pos) -
-Set the current history offset to pos, an absolute index -into the list. -
- -

-

-

-
Function: HIST_ENTRY * previous_history (void) -
-Back up the current history offset to the previous history entry, and -return a pointer to that entry. If there is no previous entry, return -a NULL pointer. -
- -

-

-

-
Function: HIST_ENTRY * next_history (void) -
-Move the current history offset forward to the next history entry, and -return the a pointer to that entry. If there is no next entry, return -a NULL pointer. -
- -

- - -

Searching the History List

-

- - -

-

-These functions allow searching of the history list for entries containing -a specific string. Searching may be performed both forward and backward -from the current history position. The search may be anchored, -meaning that the string must match at the beginning of the history entry. - - -

-

-

-
Function: int history_search (const char *string, int direction) -
-Search the history for string, starting at the current history offset. -If direction is less than 0, then the search is through -previous entries, otherwise through subsequent entries. -If string is found, then -the current history index is set to that history entry, and the value -returned is the offset in the line of the entry where -string was found. Otherwise, nothing is changed, and a -1 is -returned. -
- -

-

-

-
Function: int history_search_prefix (const char *string, int direction) -
-Search the history for string, starting at the current history -offset. The search is anchored: matching lines must begin with -string. If direction is less than 0, then the search is -through previous entries, otherwise through subsequent entries. -If string is found, then the -current history index is set to that entry, and the return value is 0. -Otherwise, nothing is changed, and a -1 is returned. -
- -

-

-

-
Function: int history_search_pos (const char *string, int direction, int pos) -
-Search for string in the history list, starting at pos, an -absolute index into the list. If direction is negative, the search -proceeds backward from pos, otherwise forward. Returns the absolute -index of the history element where string was found, or -1 otherwise. -
- -

- - -

Managing the History File

- -

-The History library can read the history from and write it to a file. -This section documents the functions for managing a history file. - -

-

-

-
Function: int read_history (const char *filename) -
-Add the contents of filename to the history list, a line at a time. -If filename is NULL, then read from `~/.history'. -Returns 0 if successful, or errno if not. -
- -

-

-

-
Function: int read_history_range (const char *filename, int from, int to) -
-Read a range of lines from filename, adding them to the history list. -Start reading at line from and end at to. -If from is zero, start at the beginning. If to is less than -from, then read until the end of the file. If filename is -NULL, then read from `~/.history'. Returns 0 if successful, -or errno if not. -
- -

-

-

-
Function: int write_history (const char *filename) -
-Write the current history to filename, overwriting filename -if necessary. -If filename is NULL, then write the history list to `~/.history'. -Values returned are as in read_history(). -
- -

-

-

-
Function: int append_history (int nelements, const char *filename) -
-Append the last nelements of the history list to filename. -If filename is NULL, then append to `~/.history'. -
- -

-

-

-
Function: int history_truncate_file (const char *filename, int nlines) -
-Truncate the history file filename, leaving only the last -nlines lines. -If filename is NULL, then `~/.history' is truncated. -
- -

- - -

History Expansion

- -

-These functions implement csh-like history expansion. - -

-

-

-
Function: int history_expand (char *string, char **output) -
-Expand string, placing the result into output, a pointer -to a string (see section History Expansion). Returns: -
- -
0 -
-If no expansions took place (or, if the only change in -the text was the removal of escape characters preceding the history expansion -character); -
1 -
-if expansions did take place; -
-1 -
-if there was an error in expansion; -
2 -
-if the returned line should be displayed, but not executed, -as with the :p modifier (see section Modifiers). -
- -

-If an error ocurred in expansion, then output contains a descriptive -error message. -

- -

-

-

-
Function: char * history_arg_extract (int first, int last, const char *string) -
-Extract a string segment consisting of the first through last -arguments present in string. Arguments are split as in Bash. -
- -

-

-

-
Function: char * get_history_event (const char *string, int *cindex, int qchar) -
-Returns the text of the history event beginning at string + -*cindex. *cindex is modified to point to after the event -specifier. At function entry, cindex points to the index into -string where the history event specification begins. qchar -is a character that is allowed to end the event specification in addition -to the "normal" terminating characters. -
- -

-

-

-
Function: char ** history_tokenize (const char *string) -
-Return an array of tokens parsed out of string, much as the -shell might. The tokens are split on the characters " \t\n()<>;&|$", -and shell quoting conventions are obeyed. -
- -

- - -

History Variables

- -

-This section describes the externally-visible variables exported by -the GNU History Library. - -

-

-

-
Variable: int history_base -
-The logical offset of the first entry in the history list. -
- -

-

-

-
Variable: int history_length -
-The number of entries currently stored in the history list. -
- -

-

-

-
Variable: int max_input_history -
-The maximum number of history entries. This must be changed using -stifle_history(). -
- -

-

-

-
Variable: char history_expansion_char -
-The character that starts a history event. The default is `!'. -
- -

-

-

-
Variable: char history_subst_char -
-The character that invokes word substitution if found at the start of -a line. The default is `^'. -
- -

-

-

-
Variable: char history_comment_char -
-During tokenization, if this character is seen as the first character -of a word, then it and all subsequent characters up to a newline are -ignored, suppressing history expansion for the remainder of the line. -This is disabled by default. -
- -

-

-

-
Variable: char * history_no_expand_chars -
-The list of characters which inhibit history expansion if found immediately -following history_expansion_char. The default is space, TAB, and -`='. -
- -

-

-

-
Variable: char * history_search_delimiter_chars -
-The list of additional characters which can delimit a history search -string, in addition to space, TAB, `:' and `?' in the case of -a substring search. The default is empty. -
- -

-

-

-
Variable: int history_quotes_inhibit_expansion -
-If non-zero, single-quoted words are not scanned for the history expansion -character. The default value is 0. -
- -

-

-

-
Variable: rl_linebuf_func_t * history_inhibit_expansion_function -
-This should be set to the address of a function that takes two arguments: -a char * (string) -and an int index into that string (i). -It should return a non-zero value if the history expansion starting at -string[i] should not be performed; zero if the expansion should -be done. -It is intended for use by applications like Bash that use the history -expansion character for additional purposes. -By default, this variable is set to NULL. -
- -

- - -

History Programming Example

- -

-The following program demonstrates simple use of the GNU History Library. - -

- -
-#include <stdio.h>
-#include <readline/history.h>
-
-main (argc, argv)
-     int argc;
-     char **argv;
-{
-  char line[1024], *t;
-  int len, done = 0;
-
-  line[0] = 0;
-
-  using_history ();
-  while (!done)
-    {
-      printf ("history$ ");
-      fflush (stdout);
-      t = fgets (line, sizeof (line) - 1, stdin);
-      if (t && *t)
-        {
-          len = strlen (t);
-          if (t[len - 1] == '\n')
-            t[len - 1] = '\0';
-        }
-
-      if (!t)
-        strcpy (line, "quit");
-
-      if (line[0])
-        {
-          char *expansion;
-          int result;
-
-          result = history_expand (line, &expansion);
-          if (result)
-            fprintf (stderr, "%s\n", expansion);
-
-          if (result < 0 || result == 2)
-            {
-              free (expansion);
-              continue;
-            }
-
-          add_history (expansion);
-          strncpy (line, expansion, sizeof (line) - 1);
-          free (expansion);
-        }
-
-      if (strcmp (line, "quit") == 0)
-        done = 1;
-      else if (strcmp (line, "save") == 0)
-        write_history ("history_file");
-      else if (strcmp (line, "read") == 0)
-        read_history ("history_file");
-      else if (strcmp (line, "list") == 0)
-        {
-          register HIST_ENTRY **the_list;
-          register int i;
-
-          the_list = history_list ();
-          if (the_list)
-            for (i = 0; the_list[i]; i++)
-              printf ("%d: %s\n", i + history_base, the_list[i]->line);
-        }
-      else if (strncmp (line, "delete", 6) == 0)
-        {
-          int which;
-          if ((sscanf (line + 6, "%d", &which)) == 1)
-            {
-              HIST_ENTRY *entry = remove_history (which);
-              if (!entry)
-                fprintf (stderr, "No such entry %d\n", which);
-              else
-                {
-                  free (entry->line);
-                  free (entry);
-                }
-            }
-          else
-            {
-              fprintf (stderr, "non-numeric arg given to `delete'\n");
-            }
-        }
-    }
-}
-
- - - -

Concept Index

-

-Jump to: -a -- -e -- -h -

-

a

- -
  • anchored search -
    •  -

    e

    - -
  • event designators -
    •  -

    h

    - -
  • history events -
  • history expansion -
  • History Searching -
    •  - -

    - - -

    Function and Variable Index

    -

    -Jump to: -a -- -c -- -g -- -h -- -m -- -n -- -p -- -r -- -s -- -u -- -w -

    -

    a

    - -
  • add_history -
  • append_history -
    •  -

    c

    - -
  • clear_history -
  • current_history -
    •  -

    g

    - -
  • get_history_event -
    •  -

    h

    - -
  • history_arg_extract -
  • history_base -
  • history_comment_char -
  • history_expand -
  • history_expansion_char -
  • history_get -
  • history_get_history_state -
  • history_inhibit_expansion_function -
  • history_is_stifled -
  • history_length -
  • history_list -
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    -This document was generated on 5 Febuary 2001 using the -texi2html -translator version 1.52.

    - - diff --git a/readline/doc/history.info b/readline/doc/history.info deleted file mode 100644 --- a/readline/doc/history.info +++ /dev/null @@ -1,825 +0,0 @@ -This is history.info, produced by makeinfo version 4.0 from -/usr/homes/chet/src/bash/readline-src/doc/hist.texinfo. - -INFO-DIR-SECTION Libraries -START-INFO-DIR-ENTRY -* History: (history). The GNU history library API -END-INFO-DIR-ENTRY - - This document describes the GNU History library, a programming tool -that provides a consistent user interface for recalling lines of -previously typed input. - - Copyright (C) 1988-2001 Free Software Foundation, Inc. - - Permission is granted to make and distribute verbatim copies of this -manual provided the copyright notice and this permission notice pare -preserved on all copies. - - Permission is granted to copy and distribute modified versions of -this manual under the conditions for verbatim copying, provided that -the entire resulting derived work is distributed under the terms of a -permission notice identical to this one. - - Permission is granted to copy and distribute translations of this -manual into another language, under the above conditions for modified -versions, except that this permission notice may be stated in a -translation approved by the Free Software Foundation. - - -File: history.info, Node: Top, Next: Using History Interactively, Up: (dir) - -GNU History Library -******************* - - This document describes the GNU History library, a programming tool -that provides a consistent user interface for recalling lines of -previously typed input. - -* Menu: - -* Using History Interactively:: GNU History User's Manual. -* Programming with GNU History:: GNU History Programmer's Manual. -* Concept Index:: Index of concepts described in this manual. -* Function and Variable Index:: Index of externally visible functions - and variables. - - -File: history.info, Node: Using History Interactively, Next: Programming with GNU History, Prev: Top, Up: Top - -Using History Interactively -*************************** - - This chapter describes how to use the GNU History Library -interactively, from a user's standpoint. It should be considered a -user's guide. For information on using the GNU History Library in your -own programs, *note Programming with GNU History::. - -* Menu: - -* History Interaction:: What it feels like using History as a user. - - -File: history.info, Node: History Interaction, Up: Using History Interactively - -History Expansion -================= - - The History library provides a history expansion feature that is -similar to the history expansion provided by `csh'. This section -describes the syntax used to manipulate the history information. - - History expansions introduce words from the history list into the -input stream, making it easy to repeat commands, insert the arguments -to a previous command into the current input line, or fix errors in -previous commands quickly. - - History expansion takes place in two parts. The first is to -determine which line from the history list should be used during -substitution. The second is to select portions of that line for -inclusion into the current one. The line selected from the history is -called the "event", and the portions of that line that are acted upon -are called "words". Various "modifiers" are available to manipulate -the selected words. The line is broken into words in the same fashion -that Bash does, so that several words surrounded by quotes are -considered one word. History expansions are introduced by the -appearance of the history expansion character, which is `!' by default. - -* Menu: - -* Event Designators:: How to specify which history line to use. -* Word Designators:: Specifying which words are of interest. -* Modifiers:: Modifying the results of substitution. - - -File: history.info, Node: Event Designators, Next: Word Designators, Up: History Interaction - -Event Designators ------------------ - - An event designator is a reference to a command line entry in the -history list. - -`!' - Start a history substitution, except when followed by a space, tab, - the end of the line, `=' or `('. - -`!N' - Refer to command line N. - -`!-N' - Refer to the command N lines back. - -`!!' - Refer to the previous command. This is a synonym for `!-1'. - -`!STRING' - Refer to the most recent command starting with STRING. - -`!?STRING[?]' - Refer to the most recent command containing STRING. The trailing - `?' may be omitted if the STRING is followed immediately by a - newline. - -`^STRING1^STRING2^' - Quick Substitution. Repeat the last command, replacing STRING1 - with STRING2. Equivalent to `!!:s/STRING1/STRING2/'. - -`!#' - The entire command line typed so far. - - -File: history.info, Node: Word Designators, Next: Modifiers, Prev: Event Designators, Up: History Interaction - -Word Designators ----------------- - - Word designators are used to select desired words from the event. A -`:' separates the event specification from the word designator. It may -be omitted if the word designator begins with a `^', `$', `*', `-', or -`%'. Words are numbered from the beginning of the line, with the first -word being denoted by 0 (zero). Words are inserted into the current -line separated by single spaces. - - For example, - -`!!' - designates the preceding command. When you type this, the - preceding command is repeated in toto. - -`!!:$' - designates the last argument of the preceding command. This may be - shortened to `!$'. - -`!fi:2' - designates the second argument of the most recent command starting - with the letters `fi'. - - Here are the word designators: - -`0 (zero)' - The `0'th word. For many applications, this is the command word. - -`N' - The Nth word. - -`^' - The first argument; that is, word 1. - -`$' - The last argument. - -`%' - The word matched by the most recent `?STRING?' search. - -`X-Y' - A range of words; `-Y' abbreviates `0-Y'. - -`*' - All of the words, except the `0'th. This is a synonym for `1-$'. - It is not an error to use `*' if there is just one word in the - event; the empty string is returned in that case. - -`X*' - Abbreviates `X-$' - -`X-' - Abbreviates `X-$' like `X*', but omits the last word. - - If a word designator is supplied without an event specification, the -previous command is used as the event. - - -File: history.info, Node: Modifiers, Prev: Word Designators, Up: History Interaction - -Modifiers ---------- - - After the optional word designator, you can add a sequence of one or -more of the following modifiers, each preceded by a `:'. - -`h' - Remove a trailing pathname component, leaving only the head. - -`t' - Remove all leading pathname components, leaving the tail. - -`r' - Remove a trailing suffix of the form `.SUFFIX', leaving the - basename. - -`e' - Remove all but the trailing suffix. - -`p' - Print the new command but do not execute it. - -`s/OLD/NEW/' - Substitute NEW for the first occurrence of OLD in the event line. - Any delimiter may be used in place of `/'. The delimiter may be - quoted in OLD and NEW with a single backslash. If `&' appears in - NEW, it is replaced by OLD. A single backslash will quote the - `&'. The final delimiter is optional if it is the last character - on the input line. - -`&' - Repeat the previous substitution. - -`g' - Cause changes to be applied over the entire event line. Used in - conjunction with `s', as in `gs/OLD/NEW/', or with `&'. - - -File: history.info, Node: Programming with GNU History, Next: Concept Index, Prev: Using History Interactively, Up: Top - -Programming with GNU History -**************************** - - This chapter describes how to interface programs that you write with -the GNU History Library. It should be considered a technical guide. -For information on the interactive use of GNU History, *note Using -History Interactively::. - -* Menu: - -* Introduction to History:: What is the GNU History library for? -* History Storage:: How information is stored. -* History Functions:: Functions that you can use. -* History Variables:: Variables that control behaviour. -* History Programming Example:: Example of using the GNU History Library. - - -File: history.info, Node: Introduction to History, Next: History Storage, Up: Programming with GNU History - -Introduction to History -======================= - - Many programs read input from the user a line at a time. The GNU -History library is able to keep track of those lines, associate -arbitrary data with each line, and utilize information from previous -lines in composing new ones. - - The programmer using the History library has available functions for -remembering lines on a history list, associating arbitrary data with a -line, removing lines from the list, searching through the list for a -line containing an arbitrary text string, and referencing any line in -the list directly. In addition, a history "expansion" function is -available which provides for a consistent user interface across -different programs. - - The user using programs written with the History library has the -benefit of a consistent user interface with a set of well-known -commands for manipulating the text of previous lines and using that text -in new commands. The basic history manipulation commands are similar to -the history substitution provided by `csh'. - - If the programmer desires, he can use the Readline library, which -includes some history manipulation by default, and has the added -advantage of command line editing. - - Before declaring any functions using any functionality the History -library provides in other code, an application writer should include -the file `' in any file that uses the History -library's features. It supplies extern declarations for all of the -library's public functions and variables, and declares all of the -public data structures. - - -File: history.info, Node: History Storage, Next: History Functions, Prev: Introduction to History, Up: Programming with GNU History - -History Storage -=============== - - The history list is an array of history entries. A history entry is -declared as follows: - - typedef void *histdata_t; - - typedef struct _hist_entry { - char *line; - histdata_t data; - } HIST_ENTRY; - - The history list itself might therefore be declared as - - HIST_ENTRY **the_history_list; - - The state of the History library is encapsulated into a single -structure: - - /* A structure used to pass around the current state of the history. */ - typedef struct _hist_state { - HIST_ENTRY **entries; /* Pointer to the entries themselves. */ - int offset; /* The location pointer within this array. */ - int length; /* Number of elements within this array. */ - int size; /* Number of slots allocated to this array. */ - int flags; - } HISTORY_STATE; - - If the flags member includes `HS_STIFLED', the history has been -stifled. - - -File: history.info, Node: History Functions, Next: History Variables, Prev: History Storage, Up: Programming with GNU History - -History Functions -================= - - This section describes the calling sequence for the various functions -present in GNU History. - -* Menu: - -* Initializing History and State Management:: Functions to call when you - want to use history in a - program. -* History List Management:: Functions used to manage the list - of history entries. -* Information About the History List:: Functions returning information about - the history list. -* Moving Around the History List:: Functions used to change the position - in the history list. -* Searching the History List:: Functions to search the history list - for entries containing a string. -* Managing the History File:: Functions that read and write a file - containing the history list. -* History Expansion:: Functions to perform csh-like history - expansion. - - -File: history.info, Node: Initializing History and State Management, Next: History List Management, Up: History Functions - -Initializing History and State Management ------------------------------------------ - - This section describes functions used to initialize and manage the -state of the History library when you want to use the history functions -in your program. - - - Function: void using_history (void) - Begin a session in which the history functions might be used. This - initializes the interactive variables. - - - Function: HISTORY_STATE * history_get_history_state (void) - Return a structure describing the current state of the input - history. - - - Function: void history_set_history_state (HISTORY_STATE *state) - Set the state of the history list according to STATE. - - -File: history.info, Node: History List Management, Next: Information About the History List, Prev: Initializing History and State Management, Up: History Functions - -History List Management ------------------------ - - These functions manage individual entries on the history list, or set -parameters managing the list itself. - - - Function: void add_history (const char *string) - Place STRING at the end of the history list. The associated data - field (if any) is set to `NULL'. - - - Function: HIST_ENTRY * remove_history (int which) - Remove history entry at offset WHICH from the history. The - removed element is returned so you can free the line, data, and - containing structure. - - - Function: HIST_ENTRY * replace_history_entry (int which, const char - *line, histdata_t data) - Make the history entry at offset WHICH have LINE and DATA. This - returns the old entry so you can dispose of the data. In the case - of an invalid WHICH, a `NULL' pointer is returned. - - - Function: void clear_history (void) - Clear the history list by deleting all the entries. - - - Function: void stifle_history (int max) - Stifle the history list, remembering only the last MAX entries. - - - Function: int unstifle_history (void) - Stop stifling the history. This returns the previous amount the - history was stifled. The value is positive if the history was - stifled, negative if it wasn't. - - - Function: int history_is_stifled (void) - Returns non-zero if the history is stifled, zero if it is not. - - -File: history.info, Node: Information About the History List, Next: Moving Around the History List, Prev: History List Management, Up: History Functions - -Information About the History List ----------------------------------- - - These functions return information about the entire history list or -individual list entries. - - - Function: HIST_ENTRY ** history_list (void) - Return a `NULL' terminated array of `HIST_ENTRY *' which is the - current input history. Element 0 of this list is the beginning of - time. If there is no history, return `NULL'. - - - Function: int where_history (void) - Returns the offset of the current history element. - - - Function: HIST_ENTRY * current_history (void) - Return the history entry at the current position, as determined by - `where_history()'. If there is no entry there, return a `NULL' - pointer. - - - Function: HIST_ENTRY * history_get (int offset) - Return the history entry at position OFFSET, starting from - `history_base' (*note History Variables::). If there is no entry - there, or if OFFSET is greater than the history length, return a - `NULL' pointer. - - - Function: int history_total_bytes (void) - Return the number of bytes that the primary history entries are - using. This function returns the sum of the lengths of all the - lines in the history. - - -File: history.info, Node: Moving Around the History List, Next: Searching the History List, Prev: Information About the History List, Up: History Functions - -Moving Around the History List ------------------------------- - - These functions allow the current index into the history list to be -set or changed. - - - Function: int history_set_pos (int pos) - Set the current history offset to POS, an absolute index into the - list. - - - Function: HIST_ENTRY * previous_history (void) - Back up the current history offset to the previous history entry, - and return a pointer to that entry. If there is no previous - entry, return a `NULL' pointer. - - - Function: HIST_ENTRY * next_history (void) - Move the current history offset forward to the next history entry, - and return the a pointer to that entry. If there is no next - entry, return a `NULL' pointer. - - -File: history.info, Node: Searching the History List, Next: Managing the History File, Prev: Moving Around the History List, Up: History Functions - -Searching the History List --------------------------- - - These functions allow searching of the history list for entries -containing a specific string. Searching may be performed both forward -and backward from the current history position. The search may be -"anchored", meaning that the string must match at the beginning of the -history entry. - - - Function: int history_search (const char *string, int direction) - Search the history for STRING, starting at the current history - offset. If DIRECTION is less than 0, then the search is through - previous entries, otherwise through subsequent entries. If STRING - is found, then the current history index is set to that history - entry, and the value returned is the offset in the line of the - entry where STRING was found. Otherwise, nothing is changed, and - a -1 is returned. - - - Function: int history_search_prefix (const char *string, int - direction) - Search the history for STRING, starting at the current history - offset. The search is anchored: matching lines must begin with - STRING. If DIRECTION is less than 0, then the search is through - previous entries, otherwise through subsequent entries. If STRING - is found, then the current history index is set to that entry, and - the return value is 0. Otherwise, nothing is changed, and a -1 is - returned. - - - Function: int history_search_pos (const char *string, int direction, - int pos) - Search for STRING in the history list, starting at POS, an - absolute index into the list. If DIRECTION is negative, the search - proceeds backward from POS, otherwise forward. Returns the - absolute index of the history element where STRING was found, or - -1 otherwise. - - -File: history.info, Node: Managing the History File, Next: History Expansion, Prev: Searching the History List, Up: History Functions - -Managing the History File -------------------------- - - The History library can read the history from and write it to a file. -This section documents the functions for managing a history file. - - - Function: int read_history (const char *filename) - Add the contents of FILENAME to the history list, a line at a time. - If FILENAME is `NULL', then read from `~/.history'. Returns 0 if - successful, or `errno' if not. - - - Function: int read_history_range (const char *filename, int from, - int to) - Read a range of lines from FILENAME, adding them to the history - list. Start reading at line FROM and end at TO. If FROM is zero, - start at the beginning. If TO is less than FROM, then read until - the end of the file. If FILENAME is `NULL', then read from - `~/.history'. Returns 0 if successful, or `errno' if not. - - - Function: int write_history (const char *filename) - Write the current history to FILENAME, overwriting FILENAME if - necessary. If FILENAME is `NULL', then write the history list to - `~/.history'. Values returned are as in `read_history()'. - - - Function: int append_history (int nelements, const char *filename) - Append the last NELEMENTS of the history list to FILENAME. If - FILENAME is `NULL', then append to `~/.history'. - - - Function: int history_truncate_file (const char *filename, int - nlines) - Truncate the history file FILENAME, leaving only the last NLINES - lines. If FILENAME is `NULL', then `~/.history' is truncated. - - -File: history.info, Node: History Expansion, Prev: Managing the History File, Up: History Functions - -History Expansion ------------------ - - These functions implement `csh'-like history expansion. - - - Function: int history_expand (char *string, char **output) - Expand STRING, placing the result into OUTPUT, a pointer to a - string (*note History Interaction::). Returns: - `0' - If no expansions took place (or, if the only change in the - text was the removal of escape characters preceding the - history expansion character); - - `1' - if expansions did take place; - - `-1' - if there was an error in expansion; - - `2' - if the returned line should be displayed, but not executed, - as with the `:p' modifier (*note Modifiers::). - - If an error ocurred in expansion, then OUTPUT contains a - descriptive error message. - - - Function: char * history_arg_extract (int first, int last, const - char *string) - Extract a string segment consisting of the FIRST through LAST - arguments present in STRING. Arguments are split as in Bash. - - - Function: char * get_history_event (const char *string, int *cindex, - int qchar) - Returns the text of the history event beginning at STRING + - *CINDEX. *CINDEX is modified to point to after the event - specifier. At function entry, CINDEX points to the index into - STRING where the history event specification begins. QCHAR is a - character that is allowed to end the event specification in - addition to the "normal" terminating characters. - - - Function: char ** history_tokenize (const char *string) - Return an array of tokens parsed out of STRING, much as the shell - might. The tokens are split on the characters `" \t\n()<>;&|$"', - and shell quoting conventions are obeyed. - - -File: history.info, Node: History Variables, Next: History Programming Example, Prev: History Functions, Up: Programming with GNU History - -History Variables -================= - - This section describes the externally-visible variables exported by -the GNU History Library. - - - Variable: int history_base - The logical offset of the first entry in the history list. - - - Variable: int history_length - The number of entries currently stored in the history list. - - - Variable: int max_input_history - The maximum number of history entries. This must be changed using - `stifle_history()'. - - - Variable: char history_expansion_char - The character that starts a history event. The default is `!'. - - - Variable: char history_subst_char - The character that invokes word substitution if found at the start - of a line. The default is `^'. - - - Variable: char history_comment_char - During tokenization, if this character is seen as the first - character of a word, then it and all subsequent characters up to a - newline are ignored, suppressing history expansion for the - remainder of the line. This is disabled by default. - - - Variable: char * history_no_expand_chars - The list of characters which inhibit history expansion if found - immediately following HISTORY_EXPANSION_CHAR. The default is - space, TAB, and `='. - - - Variable: char * history_search_delimiter_chars - The list of additional characters which can delimit a history - search string, in addition to space, TAB, `:' and `?' in the case - of a substring search. The default is empty. - - - Variable: int history_quotes_inhibit_expansion - If non-zero, single-quoted words are not scanned for the history - expansion character. The default value is 0. - - - Variable: rl_linebuf_func_t * history_inhibit_expansion_function - This should be set to the address of a function that takes two - arguments: a `char *' (STRING) and an `int' index into that string - (I). It should return a non-zero value if the history expansion - starting at STRING[I] should not be performed; zero if the - expansion should be done. It is intended for use by applications - like Bash that use the history expansion character for additional - purposes. By default, this variable is set to `NULL'. - - -File: history.info, Node: History Programming Example, Prev: History Variables, Up: Programming with GNU History - -History Programming Example -=========================== - - The following program demonstrates simple use of the GNU History -Library. - - #include - #include - - main (argc, argv) - int argc; - char **argv; - { - char line[1024], *t; - int len, done = 0; - - line[0] = 0; - - using_history (); - while (!done) - { - printf ("history$ "); - fflush (stdout); - t = fgets (line, sizeof (line) - 1, stdin); - if (t && *t) - { - len = strlen (t); - if (t[len - 1] == '\n') - t[len - 1] = '\0'; - } - - if (!t) - strcpy (line, "quit"); - - if (line[0]) - { - char *expansion; - int result; - - result = history_expand (line, &expansion); - if (result) - fprintf (stderr, "%s\n", expansion); - - if (result < 0 || result == 2) - { - free (expansion); - continue; - } - - add_history (expansion); - strncpy (line, expansion, sizeof (line) - 1); - free (expansion); - } - - if (strcmp (line, "quit") == 0) - done = 1; - else if (strcmp (line, "save") == 0) - write_history ("history_file"); - else if (strcmp (line, "read") == 0) - read_history ("history_file"); - else if (strcmp (line, "list") == 0) - { - register HIST_ENTRY **the_list; - register int i; - - the_list = history_list (); - if (the_list) - for (i = 0; the_list[i]; i++) - printf ("%d: %s\n", i + history_base, the_list[i]->line); - } - else if (strncmp (line, "delete", 6) == 0) - { - int which; - if ((sscanf (line + 6, "%d", &which)) == 1) - { - HIST_ENTRY *entry = remove_history (which); - if (!entry) - fprintf (stderr, "No such entry %d\n", which); - else - { - free (entry->line); - free (entry); - } - } - else - { - fprintf (stderr, "non-numeric arg given to `delete'\n"); - } - } - } - } - - -File: history.info, Node: Concept Index, Next: Function and Variable Index, Prev: Programming with GNU History, Up: Top - -Concept Index -************* - -* Menu: - -* anchored search: Searching the History List. -* event designators: Event Designators. -* history events: Event Designators. -* history expansion: History Interaction. -* History Searching: Searching the History List. - - -File: history.info, Node: Function and Variable Index, Prev: Concept Index, Up: Top - -Function and Variable Index -*************************** - -* Menu: - -* add_history: History List Management. -* append_history: Managing the History File. -* clear_history: History List Management. -* current_history: Information About the History List. -* get_history_event: History Expansion. -* history_arg_extract: History Expansion. -* history_base: History Variables. -* history_comment_char: History Variables. -* history_expand: History Expansion. -* history_expansion_char: History Variables. -* history_get: Information About the History List. -* history_get_history_state: Initializing History and State Management. -* history_inhibit_expansion_function: History Variables. -* history_is_stifled: History List Management. -* history_length: History Variables. -* history_list: Information About the History List. -* history_no_expand_chars: History Variables. -* history_quotes_inhibit_expansion: History Variables. -* history_search: Searching the History List. -* history_search_delimiter_chars: History Variables. -* history_search_pos: Searching the History List. -* history_search_prefix: Searching the History List. -* history_set_history_state: Initializing History and State Management. -* history_set_pos: Moving Around the History List. -* history_subst_char: History Variables. -* history_tokenize: History Expansion. -* history_total_bytes: Information About the History List. -* history_truncate_file: Managing the History File. -* max_input_history: History Variables. -* next_history: Moving Around the History List. -* previous_history: Moving Around the History List. -* read_history: Managing the History File. -* read_history_range: Managing the History File. -* remove_history: History List Management. -* replace_history_entry: History List Management. -* stifle_history: History List Management. -* unstifle_history: History List Management. -* using_history: Initializing History and State Management. -* where_history: Information About the History List. -* write_history: Managing the History File. - - - -Tag Table: -Node: Top1136 -Node: Using History Interactively1716 -Node: History Interaction2223 -Node: Event Designators3642 -Node: Word Designators4569 -Node: Modifiers6198 -Node: Programming with GNU History7336 -Node: Introduction to History8061 -Node: History Storage9746 -Node: History Functions10843 -Node: Initializing History and State Management11814 -Node: History List Management12614 -Node: Information About the History List14164 -Node: Moving Around the History List15520 -Node: Searching the History List16407 -Node: Managing the History File18325 -Node: History Expansion19996 -Node: History Variables21856 -Node: History 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    Edition 4.2-beta, for Readline Library Version 4.2-beta.

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    Feb 2001

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    Brian Fox, Free Software Foundation
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    Chet Ramey, Case Western Reserve University
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    -

    -

    Table of Contents

    - -

    - -

    -This document describes the GNU Readline Library, a utility which aids -in the consistency of user interface across discrete programs that need -to provide a command line interface. - -

    -

    -Published by the Free Software Foundation
    -59 Temple Place, Suite 330,
    -Boston, MA 02111 USA - -

    -

    -Permission is granted to make and distribute verbatim copies of -this manual provided the copyright notice and this permission notice -are preserved on all copies. - -

    -

    -Permission is granted to copy and distribute modified versions of this -manual under the conditions for verbatim copying, provided that the entire -resulting derived work is distributed under the terms of a permission -notice identical to this one. - -

    -

    -Permission is granted to copy and distribute translations of this manual -into another language, under the above conditions for modified versions, -except that this permission notice may be stated in a translation approved -by the Free Software Foundation. - -

    -

    -Copyright (C) 1988-2001 Free Software Foundation, Inc. - -

    - - - -

    Command Line Editing

    - -

    -This chapter describes the basic features of the GNU -command line editing interface. - -

    - - - - - -

    Introduction to Line Editing

    - -

    -The following paragraphs describe the notation used to represent -keystrokes. - -

    -

    -The text C-k is read as `Control-K' and describes the character -produced when the k key is pressed while the Control key -is depressed. - -

    -

    -The text M-k is read as `Meta-K' and describes the character -produced when the Meta key (if you have one) is depressed, and the k -key is pressed. -The Meta key is labeled ALT on many keyboards. -On keyboards with two keys labeled ALT (usually to either side of -the space bar), the ALT on the left side is generally set to -work as a Meta key. -The ALT key on the right may also be configured to work as a -Meta key or may be configured as some other modifier, such as a -Compose key for typing accented characters. - -

    -

    -If you do not have a Meta or ALT key, or another key working as -a Meta key, the identical keystroke can be generated by typing ESC -first, and then typing k. -Either process is known as metafying the k key. - -

    -

    -The text M-C-k is read as `Meta-Control-k' and describes the -character produced by metafying C-k. - -

    -

    -In addition, several keys have their own names. Specifically, -DEL, ESC, LFD, SPC, RET, and TAB all -stand for themselves when seen in this text, or in an init file -(see section Readline Init File). -If your keyboard lacks a LFD key, typing C-j will -produce the desired character. -The RET key may be labeled Return or Enter on -some keyboards. - -

    - - -

    Readline Interaction

    -

    - - -

    -

    -Often during an interactive session you type in a long line of text, -only to notice that the first word on the line is misspelled. The -Readline library gives you a set of commands for manipulating the text -as you type it in, allowing you to just fix your typo, and not forcing -you to retype the majority of the line. Using these editing commands, -you move the cursor to the place that needs correction, and delete or -insert the text of the corrections. Then, when you are satisfied with -the line, you simply press RET. You do not have to be at the -end of the line to press RET; the entire line is accepted -regardless of the location of the cursor within the line. - -

    - - - - - -

    Readline Bare Essentials

    -

    - - - - -

    -

    -In order to enter characters into the line, simply type them. The typed -character appears where the cursor was, and then the cursor moves one -space to the right. If you mistype a character, you can use your -erase character to back up and delete the mistyped character. - -

    -

    -Sometimes you may mistype a character, and -not notice the error until you have typed several other characters. In -that case, you can type C-b to move the cursor to the left, and then -correct your mistake. Afterwards, you can move the cursor to the right -with C-f. - -

    -

    -When you add text in the middle of a line, you will notice that characters -to the right of the cursor are `pushed over' to make room for the text -that you have inserted. Likewise, when you delete text behind the cursor, -characters to the right of the cursor are `pulled back' to fill in the -blank space created by the removal of the text. A list of the bare -essentials for editing the text of an input line follows. - -

    -
    - -
    C-b -
    -Move back one character. -
    C-f -
    -Move forward one character. -
    DEL or Backspace -
    -Delete the character to the left of the cursor. -
    C-d -
    -Delete the character underneath the cursor. -
    Printing characters -
    -Insert the character into the line at the cursor. -
    C-_ or C-x C-u -
    -Undo the last editing command. You can undo all the way back to an -empty line. -
    - -

    -(Depending on your configuration, the Backspace key be set to -delete the character to the left of the cursor and the DEL key set -to delete the character underneath the cursor, like C-d, rather -than the character to the left of the cursor.) - -

    - - -

    Readline Movement Commands

    - -

    -The above table describes the most basic keystrokes that you need -in order to do editing of the input line. For your convenience, many -other commands have been added in addition to C-b, C-f, -C-d, and DEL. Here are some commands for moving more rapidly -about the line. - -

    -
    - -
    C-a -
    -Move to the start of the line. -
    C-e -
    -Move to the end of the line. -
    M-f -
    -Move forward a word, where a word is composed of letters and digits. -
    M-b -
    -Move backward a word. -
    C-l -
    -Clear the screen, reprinting the current line at the top. -
    - -

    -Notice how C-f moves forward a character, while M-f moves -forward a word. It is a loose convention that control keystrokes -operate on characters while meta keystrokes operate on words. - -

    - - -

    Readline Killing Commands

    - -

    - - - -

    -

    -Killing text means to delete the text from the line, but to save -it away for later use, usually by yanking (re-inserting) -it back into the line. -(`Cut' and `paste' are more recent jargon for `kill' and `yank'.) - -

    -

    -If the description for a command says that it `kills' text, then you can -be sure that you can get the text back in a different (or the same) -place later. - -

    -

    -When you use a kill command, the text is saved in a kill-ring. -Any number of consecutive kills save all of the killed text together, so -that when you yank it back, you get it all. The kill -ring is not line specific; the text that you killed on a previously -typed line is available to be yanked back later, when you are typing -another line. - - -

    -

    -Here is the list of commands for killing text. - -

    -
    - -
    C-k -
    -Kill the text from the current cursor position to the end of the line. - -
    M-d -
    -Kill from the cursor to the end of the current word, or, if between -words, to the end of the next word. -Word boundaries are the same as those used by M-f. - -
    M-DEL -
    -Kill from the cursor the start of the previous word, or, if between -words, to the start of the previous word. -Word boundaries are the same as those used by M-b. - -
    C-w -
    -Kill from the cursor to the previous whitespace. This is different than -M-DEL because the word boundaries differ. - -
    - -

    -Here is how to yank the text back into the line. Yanking -means to copy the most-recently-killed text from the kill buffer. - -

    -
    - -
    C-y -
    -Yank the most recently killed text back into the buffer at the cursor. - -
    M-y -
    -Rotate the kill-ring, and yank the new top. You can only do this if -the prior command is C-y or M-y. -
    - - - -

    Readline Arguments

    - -

    -You can pass numeric arguments to Readline commands. Sometimes the -argument acts as a repeat count, other times it is the sign of the -argument that is significant. If you pass a negative argument to a -command which normally acts in a forward direction, that command will -act in a backward direction. For example, to kill text back to the -start of the line, you might type `M-- C-k'. - -

    -

    -The general way to pass numeric arguments to a command is to type meta -digits before the command. If the first `digit' typed is a minus -sign (`-'), then the sign of the argument will be negative. Once -you have typed one meta digit to get the argument started, you can type -the remainder of the digits, and then the command. For example, to give -the C-d command an argument of 10, you could type `M-1 0 C-d', -which will delete the next ten characters on the input line. - -

    - - -

    Searching for Commands in the History

    - -

    -Readline provides commands for searching through the command history -for lines containing a specified string. -There are two search modes: incremental and non-incremental. - -

    -

    -Incremental searches begin before the user has finished typing the -search string. -As each character of the search string is typed, Readline displays -the next entry from the history matching the string typed so far. -An incremental search requires only as many characters as needed to -find the desired history entry. -To search backward in the history for a particular string, type -C-r. Typing C-s searches forward through the history. -The characters present in the value of the isearch-terminators variable -are used to terminate an incremental search. -If that variable has not been assigned a value, the ESC and -C-J characters will terminate an incremental search. -C-g will abort an incremental search and restore the original line. -When the search is terminated, the history entry containing the -search string becomes the current line. - -

    -

    -To find other matching entries in the history list, type C-r or -C-s as appropriate. -This will search backward or forward in the history for the next -entry matching the search string typed so far. -Any other key sequence bound to a Readline command will terminate -the search and execute that command. -For instance, a RET will terminate the search and accept -the line, thereby executing the command from the history list. -A movement command will terminate the search, make the last line found -the current line, and begin editing. - -

    -

    -Non-incremental searches read the entire search string before starting -to search for matching history lines. The search string may be -typed by the user or be part of the contents of the current line. - -

    - - -

    Readline Init File

    -

    - - -

    -

    -Although the Readline library comes with a set of Emacs-like -keybindings installed by default, it is possible to use a different set -of keybindings. -Any user can customize programs that use Readline by putting -commands in an inputrc file, conventionally in his home directory. -The name of this -file is taken from the value of the environment variable @env{INPUTRC}. If -that variable is unset, the default is `~/.inputrc'. - -

    -

    -When a program which uses the Readline library starts up, the -init file is read, and the key bindings are set. - -

    -

    -In addition, the C-x C-r command re-reads this init file, thus -incorporating any changes that you might have made to it. - -

    - - - - - -

    Readline Init File Syntax

    - -

    -There are only a few basic constructs allowed in the -Readline init file. Blank lines are ignored. -Lines beginning with a `#' are comments. -Lines beginning with a `$' indicate conditional -constructs (see section Conditional Init Constructs). Other lines -denote variable settings and key bindings. - -

    -
    - -
    Variable Settings -
    -You can modify the run-time behavior of Readline by -altering the values of variables in Readline -using the set command within the init file. Here is how to -change from the default Emacs-like key binding to use -vi line editing commands: - - -
    -set editing-mode vi
-
    - -A great deal of run-time behavior is changeable with the following -variables. - -
    - -
    bell-style -
    - -Controls what happens when Readline wants to ring the terminal bell. -If set to `none', Readline never rings the bell. If set to -`visible', Readline uses a visible bell if one is available. -If set to `audible' (the default), Readline attempts to ring -the terminal's bell. - -
    comment-begin -
    - -The string to insert at the beginning of the line when the -insert-comment command is executed. The default value -is "#". - -
    completion-ignore-case -
    -If set to `on', Readline performs filename matching and completion -in a case-insensitive fashion. -The default value is `off'. - -
    completion-query-items -
    - -The number of possible completions that determines when the user is -asked whether he wants to see the list of possibilities. If the -number of possible completions is greater than this value, -Readline will ask the user whether or not he wishes to view -them; otherwise, they are simply listed. -This variable must be set to an integer value greater than or equal to 0. -The default limit is 100. - -
    convert-meta -
    - -If set to `on', Readline will convert characters with the -eighth bit set to an ASCII key sequence by stripping the eighth -bit and prefixing an ESC character, converting them to a -meta-prefixed key sequence. The default value is `on'. - -
    disable-completion -
    - -If set to `On', Readline will inhibit word completion. -Completion characters will be inserted into the line as if they had -been mapped to self-insert. The default is `off'. - -
    editing-mode -
    - -The editing-mode variable controls which default set of -key bindings is used. By default, Readline starts up in Emacs editing -mode, where the keystrokes are most similar to Emacs. This variable can be -set to either `emacs' or `vi'. - -
    enable-keypad -
    - -When set to `on', Readline will try to enable the application -keypad when it is called. Some systems need this to enable the -arrow keys. The default is `off'. - -
    expand-tilde -
    - -If set to `on', tilde expansion is performed when Readline -attempts word completion. The default is `off'. - -
    horizontal-scroll-mode -
    - -This variable can be set to either `on' or `off'. Setting it -to `on' means that the text of the lines being edited will scroll -horizontally on a single screen line when they are longer than the width -of the screen, instead of wrapping onto a new screen line. By default, -this variable is set to `off'. - -
    input-meta -
    - - -If set to `on', Readline will enable eight-bit input (it -will not clear the eighth bit in the characters it reads), -regardless of what the terminal claims it can support. The -default value is `off'. The name meta-flag is a -synonym for this variable. - -
    isearch-terminators -
    - -The string of characters that should terminate an incremental search without -subsequently executing the character as a command (see section Searching for Commands in the History). -If this variable has not been given a value, the characters ESC and -C-J will terminate an incremental search. - -
    keymap -
    - -Sets Readline's idea of the current keymap for key binding commands. -Acceptable keymap names are -emacs, -emacs-standard, -emacs-meta, -emacs-ctlx, -vi, -vi-move, -vi-command, and -vi-insert. -vi is equivalent to vi-command; emacs is -equivalent to emacs-standard. The default value is emacs. -The value of the editing-mode variable also affects the -default keymap. - -
    mark-directories -
    -If set to `on', completed directory names have a slash -appended. The default is `on'. - -
    mark-modified-lines -
    - -This variable, when set to `on', causes Readline to display an -asterisk (`*') at the start of history lines which have been modified. -This variable is `off' by default. - -
    output-meta -
    - -If set to `on', Readline will display characters with the -eighth bit set directly rather than as a meta-prefixed escape -sequence. The default is `off'. - -
    print-completions-horizontally -
    -If set to `on', Readline will display completions with matches -sorted horizontally in alphabetical order, rather than down the screen. -The default is `off'. - -
    show-all-if-ambiguous -
    - -This alters the default behavior of the completion functions. If -set to `on', -words which have more than one possible completion cause the -matches to be listed immediately instead of ringing the bell. -The default value is `off'. - -
    visible-stats -
    - -If set to `on', a character denoting a file's type -is appended to the filename when listing possible -completions. The default is `off'. - -
    - -
    Key Bindings -
    -The syntax for controlling key bindings in the init file is -simple. First you need to find the name of the command that you -want to change. The following sections contain tables of the command -name, the default keybinding, if any, and a short description of what -the command does. - -Once you know the name of the command, simply place on a line -in the init file the name of the key -you wish to bind the command to, a colon, and then the name of the -command. The name of the key -can be expressed in different ways, depending on what you find most -comfortable. - -
    - -
    keyname: function-name or macro -
    -keyname is the name of a key spelled out in English. For example: - -
    -Control-u: universal-argument
-Meta-Rubout: backward-kill-word
-Control-o: "> output"
-
    - -In the above example, C-u is bound to the function -universal-argument, -M-DEL is bound to the function backward-kill-word, and -C-o is bound to run the macro -expressed on the right hand side (that is, to insert the text -`> output' into the line). - -A number of symbolic character names are recognized while -processing this key binding syntax: -DEL, -ESC, -ESCAPE, -LFD, -NEWLINE, -RET, -RETURN, -RUBOUT, -SPACE, -SPC, -and -TAB. - -
    "keyseq": function-name or macro -
    -keyseq differs from keyname above in that strings -denoting an entire key sequence can be specified, by placing -the key sequence in double quotes. Some GNU Emacs style key -escapes can be used, as in the following example, but the -special character names are not recognized. - - -
    -"\C-u": universal-argument
-"\C-x\C-r": re-read-init-file
-"\e[11~": "Function Key 1"
-
    - -In the above example, C-u is again bound to the function -universal-argument (just as it was in the first example), -`C-x C-r' is bound to the function re-read-init-file, -and `ESC [ 1 1 ~' is bound to insert -the text `Function Key 1'. - -
    - -The following GNU Emacs style escape sequences are available when -specifying key sequences: - -
    - -
    \C- -
    -control prefix -
    \M- -
    -meta prefix -
    \e -
    -an escape character -
    \\ -
    -backslash -
    \" -
    -", a double quotation mark -
    \' -
    -', a single quote or apostrophe -
    - -In addition to the GNU Emacs style escape sequences, a second -set of backslash escapes is available: - -
    - -
    \a -
    -alert (bell) -
    \b -
    -backspace -
    \d -
    -delete -
    \f -
    -form feed -
    \n -
    -newline -
    \r -
    -carriage return -
    \t -
    -horizontal tab -
    \v -
    -vertical tab -
    \nnn -
    -the character whose ASCII code is the octal value nnn -(one to three digits) -
    \xnnn -
    -the character whose ASCII code is the hexadecimal value nnn -(one to three digits) -
    - -When entering the text of a macro, single or double quotes must -be used to indicate a macro definition. -Unquoted text is assumed to be a function name. -In the macro body, the backslash escapes described above are expanded. -Backslash will quote any other character in the macro text, -including `"' and `''. -For example, the following binding will make `C-x \' -insert a single `\' into the line: - -
    -"\C-x\\": "\\"
-
    - -
    - - - -

    Conditional Init Constructs

    - -

    -Readline implements a facility similar in spirit to the conditional -compilation features of the C preprocessor which allows key -bindings and variable settings to be performed as the result -of tests. There are four parser directives used. - -

    -
    - -
    $if -
    -The $if construct allows bindings to be made based on the -editing mode, the terminal being used, or the application using -Readline. The text of the test extends to the end of the line; -no characters are required to isolate it. - -
    - -
    mode -
    -The mode= form of the $if directive is used to test -whether Readline is in emacs or vi mode. -This may be used in conjunction -with the `set keymap' command, for instance, to set bindings in -the emacs-standard and emacs-ctlx keymaps only if -Readline is starting out in emacs mode. - -
    term -
    -The term= form may be used to include terminal-specific -key bindings, perhaps to bind the key sequences output by the -terminal's function keys. The word on the right side of the -`=' is tested against both the full name of the terminal and -the portion of the terminal name before the first `-'. This -allows sun to match both sun and sun-cmd, -for instance. - -
    application -
    -The application construct is used to include -application-specific settings. Each program using the Readline -library sets the application name, and you can test for it. -This could be used to bind key sequences to functions useful for -a specific program. For instance, the following command adds a -key sequence that quotes the current or previous word in Bash: - -
    -$if Bash
-# Quote the current or previous word
-"\C-xq": "\eb\"\ef\""
-$endif
-
    - -
    - -
    $endif -
    -This command, as seen in the previous example, terminates an -$if command. - -
    $else -
    -Commands in this branch of the $if directive are executed if -the test fails. - -
    $include -
    -This directive takes a single filename as an argument and reads commands -and bindings from that file. - -
    -$include /etc/inputrc
-
    - -
    - - - -

    Sample Init File

    - -

    -Here is an example of an inputrc file. This illustrates key -binding, variable assignment, and conditional syntax. - -

    - -
    -# This file controls the behaviour of line input editing for
-# programs that use the Gnu Readline library.  Existing programs
-# include FTP, Bash, and Gdb.
-#
-# You can re-read the inputrc file with C-x C-r.
-# Lines beginning with '#' are comments.
-#
-# First, include any systemwide bindings and variable assignments from
-# /etc/Inputrc
-$include /etc/Inputrc
-
-#
-# Set various bindings for emacs mode.
-
-set editing-mode emacs 
-
-$if mode=emacs
-
-Meta-Control-h:	backward-kill-word	Text after the function name is ignored
-
-#
-# Arrow keys in keypad mode
-#
-#"\M-OD":        backward-char
-#"\M-OC":        forward-char
-#"\M-OA":        previous-history
-#"\M-OB":        next-history
-#
-# Arrow keys in ANSI mode
-#
-"\M-[D":        backward-char
-"\M-[C":        forward-char
-"\M-[A":        previous-history
-"\M-[B":        next-history
-#
-# Arrow keys in 8 bit keypad mode
-#
-#"\M-\C-OD":       backward-char
-#"\M-\C-OC":       forward-char
-#"\M-\C-OA":       previous-history
-#"\M-\C-OB":       next-history
-#
-# Arrow keys in 8 bit ANSI mode
-#
-#"\M-\C-[D":       backward-char
-#"\M-\C-[C":       forward-char
-#"\M-\C-[A":       previous-history
-#"\M-\C-[B":       next-history
-
-C-q: quoted-insert
-
-$endif
-
-# An old-style binding.  This happens to be the default.
-TAB: complete
-
-# Macros that are convenient for shell interaction
-$if Bash
-# edit the path
-"\C-xp": "PATH=${PATH}\e\C-e\C-a\ef\C-f"
-# prepare to type a quoted word -- insert open and close double quotes
-# and move to just after the open quote
-"\C-x\"": "\"\"\C-b"
-# insert a backslash (testing backslash escapes in sequences and macros)
-"\C-x\\": "\\"
-# Quote the current or previous word
-"\C-xq": "\eb\"\ef\""
-# Add a binding to refresh the line, which is unbound
-"\C-xr": redraw-current-line
-# Edit variable on current line.
-"\M-\C-v": "\C-a\C-k$\C-y\M-\C-e\C-a\C-y="
-$endif
-
-# use a visible bell if one is available
-set bell-style visible
-
-# don't strip characters to 7 bits when reading
-set input-meta on
-
-# allow iso-latin1 characters to be inserted rather than converted to
-# prefix-meta sequences
-set convert-meta off
-
-# display characters with the eighth bit set directly rather than
-# as meta-prefixed characters
-set output-meta on
-
-# if there are more than 150 possible completions for a word, ask the
-# user if he wants to see all of them
-set completion-query-items 150
-
-# For FTP
-$if Ftp
-"\C-xg": "get \M-?"
-"\C-xt": "put \M-?"
-"\M-.": yank-last-arg
-$endif
-
    - - - -

    Bindable Readline Commands

    - - - - -

    -This section describes Readline commands that may be bound to key -sequences. - -

    -

    -Command names without an accompanying key sequence are unbound by default. -In the following descriptions, point refers to the current cursor -position, and mark refers to a cursor position saved by the -set-mark command. -The text between the point and mark is referred to as the region. - -

    - - -

    Commands For Moving

    -
    - -
    beginning-of-line (C-a) -
    - -Move to the start of the current line. - -
    end-of-line (C-e) -
    - -Move to the end of the line. - -
    forward-char (C-f) -
    - -Move forward a character. - -
    backward-char (C-b) -
    - -Move back a character. - -
    forward-word (M-f) -
    - -Move forward to the end of the next word. Words are composed of -letters and digits. - -
    backward-word (M-b) -
    - -Move back to the start of the current or previous word. Words are -composed of letters and digits. - -
    clear-screen (C-l) -
    - -Clear the screen and redraw the current line, -leaving the current line at the top of the screen. - -
    redraw-current-line () -
    - -Refresh the current line. By default, this is unbound. - -
    - - - -

    Commands For Manipulating The History

    - -
    - -
    accept-line (Newline or Return) -
    - -Accept the line regardless of where the cursor is. -If this line is -non-empty, it may be added to the history list for future recall with -add_history(). -If this line is a modified history line, then restore the history line -to its original state. - -
    previous-history (C-p) -
    - -Move `up' through the history list. - -
    next-history (C-n) -
    - -Move `down' through the history list. - -
    beginning-of-history (M-<) -
    - -Move to the first line in the history. - -
    end-of-history (M->) -
    - -Move to the end of the input history, i.e., the line currently -being entered. - -
    reverse-search-history (C-r) -
    - -Search backward starting at the current line and moving `up' through -the history as necessary. This is an incremental search. - -
    forward-search-history (C-s) -
    - -Search forward starting at the current line and moving `down' through -the the history as necessary. This is an incremental search. - -
    non-incremental-reverse-search-history (M-p) -
    - -Search backward starting at the current line and moving `up' -through the history as necessary using a non-incremental search -for a string supplied by the user. - -
    non-incremental-forward-search-history (M-n) -
    - -Search forward starting at the current line and moving `down' -through the the history as necessary using a non-incremental search -for a string supplied by the user. - -
    history-search-forward () -
    - -Search forward through the history for the string of characters -between the start of the current line and the point. -This is a non-incremental search. -By default, this command is unbound. - -
    history-search-backward () -
    - -Search backward through the history for the string of characters -between the start of the current line and the point. This -is a non-incremental search. By default, this command is unbound. - -
    yank-nth-arg (M-C-y) -
    - -Insert the first argument to the previous command (usually -the second word on the previous line). With an argument n, -insert the nth word from the previous command (the words -in the previous command begin with word 0). A negative argument -inserts the nth word from the end of the previous command. - -
    yank-last-arg (M-. or M-_) -
    - -Insert last argument to the previous command (the last word of the -previous history entry). With an -argument, behave exactly like yank-nth-arg. -Successive calls to yank-last-arg move back through the history -list, inserting the last argument of each line in turn. - -
    - - - -

    Commands For Changing Text

    - -
    - -
    delete-char (C-d) -
    - -Delete the character under the cursor. If the cursor is at the -beginning of the line, there are no characters in the line, and -the last character typed was not bound to delete-char, then -return EOF. - -
    backward-delete-char (Rubout) -
    - -Delete the character behind the cursor. A numeric argument means -to kill the characters instead of deleting them. - -
    forward-backward-delete-char () -
    - -Delete the character under the cursor, unless the cursor is at the -end of the line, in which case the character behind the cursor is -deleted. By default, this is not bound to a key. - -
    quoted-insert (C-q or C-v) -
    - -Add the next character typed to the line verbatim. This is -how to insert key sequences like C-q, for example. - -
    tab-insert (M-TAB) -
    - -Insert a tab character. - -
    self-insert (a, b, A, 1, !, ...) -
    - -Insert yourself. - -
    transpose-chars (C-t) -
    - -Drag the character before the cursor forward over -the character at the cursor, moving the -cursor forward as well. If the insertion point -is at the end of the line, then this -transposes the last two characters of the line. -Negative arguments have no effect. - -
    transpose-words (M-t) -
    - -Drag the word before point past the word after point, -moving point past that word as well. - -
    upcase-word (M-u) -
    - -Uppercase the current (or following) word. With a negative argument, -uppercase the previous word, but do not move the cursor. - -
    downcase-word (M-l) -
    - -Lowercase the current (or following) word. With a negative argument, -lowercase the previous word, but do not move the cursor. - -
    capitalize-word (M-c) -
    - -Capitalize the current (or following) word. With a negative argument, -capitalize the previous word, but do not move the cursor. - -
    - - - -

    Killing And Yanking

    - -
    - -
    kill-line (C-k) -
    - -Kill the text from point to the end of the line. - -
    backward-kill-line (C-x Rubout) -
    - -Kill backward to the beginning of the line. - -
    unix-line-discard (C-u) -
    - -Kill backward from the cursor to the beginning of the current line. - -
    kill-whole-line () -
    - -Kill all characters on the current line, no matter point is. -By default, this is unbound. - -
    kill-word (M-d) -
    - -Kill from point to the end of the current word, or if between -words, to the end of the next word. -Word boundaries are the same as forward-word. - -
    backward-kill-word (M-DEL) -
    - -Kill the word behind point. -Word boundaries are the same as backward-word. - -
    unix-word-rubout (C-w) -
    - -Kill the word behind point, using white space as a word boundary. -The killed text is saved on the kill-ring. - -
    delete-horizontal-space () -
    - -Delete all spaces and tabs around point. By default, this is unbound. - -
    kill-region () -
    - -Kill the text in the current region. -By default, this command is unbound. - -
    copy-region-as-kill () -
    - -Copy the text in the region to the kill buffer, so it can be yanked -right away. By default, this command is unbound. - -
    copy-backward-word () -
    - -Copy the word before point to the kill buffer. -The word boundaries are the same as backward-word. -By default, this command is unbound. - -
    copy-forward-word () -
    - -Copy the word following point to the kill buffer. -The word boundaries are the same as forward-word. -By default, this command is unbound. - -
    yank (C-y) -
    - -Yank the top of the kill ring into the buffer at the current -cursor position. - -
    yank-pop (M-y) -
    - -Rotate the kill-ring, and yank the new top. You can only do this if -the prior command is yank or yank-pop. -
    - - - -

    Specifying Numeric Arguments

    -
    - -
    digit-argument (M-0, M-1, ... M--) -
    - -Add this digit to the argument already accumulating, or start a new -argument. M-- starts a negative argument. - -
    universal-argument () -
    - -This is another way to specify an argument. -If this command is followed by one or more digits, optionally with a -leading minus sign, those digits define the argument. -If the command is followed by digits, executing universal-argument -again ends the numeric argument, but is otherwise ignored. -As a special case, if this command is immediately followed by a -character that is neither a digit or minus sign, the argument count -for the next command is multiplied by four. -The argument count is initially one, so executing this function the -first time makes the argument count four, a second time makes the -argument count sixteen, and so on. -By default, this is not bound to a key. -
    - - - -

    Letting Readline Type For You

    - -
    - -
    complete (TAB) -
    - -Attempt to perform completion on the text before point. -The actual completion performed is application-specific. -The default is filename completion. - -
    possible-completions (M-?) -
    - -List the possible completions of the text before the cursor. - -
    insert-completions (M-*) -
    - -Insert all completions of the text before point that would have -been generated by possible-completions. - -
    menu-complete () -
    - -Similar to complete, but replaces the word to be completed -with a single match from the list of possible completions. -Repeated execution of menu-complete steps through the list -of possible completions, inserting each match in turn. -At the end of the list of completions, the bell is rung and the -original text is restored. -An argument of n moves n positions forward in the list -of matches; a negative argument may be used to move backward -through the list. -This command is intended to be bound to TAB, but is unbound -by default. - -
    delete-char-or-list () -
    - -Deletes the character under the cursor if not at the beginning or -end of the line (like delete-char). -If at the end of the line, behaves identically to -possible-completions. -This command is unbound by default. - -
    - - - -

    Keyboard Macros

    -
    - -
    start-kbd-macro (C-x () -
    - -Begin saving the characters typed into the current keyboard macro. - -
    end-kbd-macro (C-x )) -
    - -Stop saving the characters typed into the current keyboard macro -and save the definition. - -
    call-last-kbd-macro (C-x e) -
    - -Re-execute the last keyboard macro defined, by making the characters -in the macro appear as if typed at the keyboard. - -
    - - - -

    Some Miscellaneous Commands

    -
    - -
    re-read-init-file (C-x C-r) -
    - -Read in the contents of the inputrc file, and incorporate -any bindings or variable assignments found there. - -
    abort (C-g) -
    - -Abort the current editing command and -ring the terminal's bell (subject to the setting of -bell-style). - -
    do-uppercase-version (M-a, M-b, M-x, ...) -
    - -If the metafied character x is lowercase, run the command -that is bound to the corresponding uppercase character. - -
    prefix-meta (ESC) -
    - -Make the next character typed be metafied. This is for keyboards -without a meta key. Typing `ESC f' is equivalent to typing -M-f. - -
    undo (C-_ or C-x C-u) -
    - -Incremental undo, separately remembered for each line. - -
    revert-line (M-r) -
    - -Undo all changes made to this line. This is like executing the undo -command enough times to get back to the beginning. - -
    tilde-expand (M-~) -
    - -Perform tilde expansion on the current word. - -
    set-mark (C-@) -
    - -Set the mark to the current point. If a -numeric argument is supplied, the mark is set to that position. - -
    exchange-point-and-mark (C-x C-x) -
    - -Swap the point with the mark. The current cursor position is set to -the saved position, and the old cursor position is saved as the mark. - -
    character-search (C-]) -
    - -A character is read and point is moved to the next occurrence of that -character. A negative count searches for previous occurrences. - -
    character-search-backward (M-C-]) -
    - -A character is read and point is moved to the previous occurrence -of that character. A negative count searches for subsequent -occurrences. - -
    insert-comment (M-#) -
    - -The value of the comment-begin -variable is inserted at the beginning of the current line, -and the line is accepted as if a newline had been typed. - -
    dump-functions () -
    - -Print all of the functions and their key bindings to the -Readline output stream. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an inputrc file. This command is unbound by default. - -
    dump-variables () -
    - -Print all of the settable variables and their values to the -Readline output stream. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an inputrc file. This command is unbound by default. - -
    dump-macros () -
    - -Print all of the Readline key sequences bound to macros and the -strings they output. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an inputrc file. This command is unbound by default. - -
    - - - -

    Readline vi Mode

    - -

    -While the Readline library does not have a full set of vi -editing functions, it does contain enough to allow simple editing -of the line. The Readline vi mode behaves as specified in -the POSIX 1003.2 standard. - -

    -

    -In order to switch interactively between emacs and vi -editing modes, use the command M-C-j (toggle-editing-mode). -The Readline default is emacs mode. - -

    -

    -When you enter a line in vi mode, you are already placed in -`insertion' mode, as if you had typed an `i'. Pressing ESC -switches you into `command' mode, where you can edit the text of the -line with the standard vi movement keys, move to previous -history lines with `k' and subsequent lines with `j', and -so forth. - -

    - - - -

    Programming with GNU Readline

    - -

    -This chapter describes the interface between the GNU Readline Library and -other programs. If you are a programmer, and you wish to include the -features found in GNU Readline -such as completion, line editing, and interactive history manipulation -in your own programs, this section is for you. - -

    - - - - - -

    Basic Behavior

    - -

    -Many programs provide a command line interface, such as mail, -ftp, and sh. For such programs, the default behaviour of -Readline is sufficient. This section describes how to use Readline in -the simplest way possible, perhaps to replace calls in your code to -gets() or fgets(). - -

    -

    - - - -

    - -
    -char *readline (const char *prompt);
-
    - -

    -The function readline() prints a prompt prompt -and then reads and returns a single line of text from the user. -If prompt is NULL or the empty string, no prompt is displayed. -The line readline returns is allocated with malloc(); -the caller should free() the line when it has finished with it. -The declaration for readline in ANSI C is - -

    -

    -So, one might say - -

    -char *line = readline ("Enter a line: ");
-
    - -

    -in order to read a line of text from the user. -The line returned has the final newline removed, so only the -text remains. - -

    -

    -If readline encounters an EOF while reading the line, and the -line is empty at that point, then (char *)NULL is returned. -Otherwise, the line is ended just as if a newline had been typed. - -

    -

    -If you want the user to be able to get at the line later, (with -C-p for example), you must call add_history() to save the -line away in a history list of such lines. - -

    - -
    -add_history (line);
-
    - -

    -For full details on the GNU History Library, see the associated manual. - -

    -

    -It is preferable to avoid saving empty lines on the history list, since -users rarely have a burning need to reuse a blank line. Here is -a function which usefully replaces the standard gets() library -function, and has the advantage of no static buffer to overflow: - -

    - -
    -/* A static variable for holding the line. */
-static char *line_read = (char *)NULL;
-
-/* Read a string, and return a pointer to it.  Returns NULL on EOF. */
-char *
-rl_gets ()
-{
-  /* If the buffer has already been allocated, return the memory
-     to the free pool. */
-  if (line_read)
-    {
-      free (line_read);
-      line_read = (char *)NULL;
-    }
-
-  /* Get a line from the user. */
-  line_read = readline ("");
-
-  /* If the line has any text in it, save it on the history. */
-  if (line_read && *line_read)
-    add_history (line_read);
-
-  return (line_read);
-}
-
    - -

    -This function gives the user the default behaviour of TAB -completion: completion on file names. If you do not want Readline to -complete on filenames, you can change the binding of the TAB key -with rl_bind_key(). - -

    - -
    -int rl_bind_key (int key, rl_command_func_t *function);
-
    - -

    -rl_bind_key() takes two arguments: key is the character that -you want to bind, and function is the address of the function to -call when key is pressed. Binding TAB to rl_insert() -makes TAB insert itself. -rl_bind_key() returns non-zero if key is not a valid -ASCII character code (between 0 and 255). - -

    -

    -Thus, to disable the default TAB behavior, the following suffices: - -

    -rl_bind_key ('\t', rl_insert);
-
    - -

    -This code should be executed once at the start of your program; you -might write a function called initialize_readline() which -performs this and other desired initializations, such as installing -custom completers (see section Custom Completers). - -

    - - -

    Custom Functions

    - -

    -Readline provides many functions for manipulating the text of -the line, but it isn't possible to anticipate the needs of all -programs. This section describes the various functions and variables -defined within the Readline library which allow a user program to add -customized functionality to Readline. - -

    -

    -Before declaring any functions that customize Readline's behavior, or -using any functionality Readline provides in other code, an -application writer should include the file <readline/readline.h> -in any file that uses Readline's features. Since some of the definitions -in readline.h use the stdio library, the file -<stdio.h> should be included before readline.h. - -

    - - - - - -

    Readline Typedefs

    - -

    -For readabilty, we declare a number of new object types, all pointers -to functions. - -

    -

    -The reason for declaring these new types is to make it easier to write -code describing pointers to C functions with appropriately prototyped -arguments and return values. - -

    -

    -For instance, say we want to declare a variable func as a pointer -to a function which takes two int arguments and returns an -int (this is the type of all of the Readline bindable functions). -Instead of the classic C declaration - -

    -

    -int (*func)(); - -

    -

    -or the ANSI-C style declaration - -

    -

    -int (*func)(int, int); - -

    -

    -we may write - -

    -

    -rl_command_func_t *func; - -

    -

    -The full list of function pointer types available is - -

    -
    - -
    typedef int rl_command_func_t (int, int); -
    -
    typedef char *rl_compentry_func_t (const char *, int); -
    -
    typedef char **rl_completion_func_t (const char *, int, int); -
    -
    typedef char *rl_quote_func_t (char *, int, char *); -
    -
    typedef char *rl_dequote_func_t (char *, int); -
    -
    typedef int rl_compignore_func_t (char **); -
    -
    typedef void rl_compdisp_func_t (char **, int, int); -
    -
    typedef int rl_hook_func_t (void); -
    -
    typedef int rl_getc_func_t (FILE *); -
    -
    typedef int rl_linebuf_func_t (char *, int); -
    -
    typedef int rl_intfunc_t (int); -
    -
    #define rl_ivoidfunc_t rl_hook_func_t -
    -
    typedef int rl_icpfunc_t (char *); -
    -
    typedef int rl_icppfunc_t (char **); -
    -
    typedef void rl_voidfunc_t (void); -
    -
    typedef void rl_vintfunc_t (int); -
    -
    typedef void rl_vcpfunc_t (char *); -
    -
    typedef void rl_vcppfunc_t (char **); -
    -
    - - - -

    Writing a New Function

    - -

    -In order to write new functions for Readline, you need to know the -calling conventions for keyboard-invoked functions, and the names of the -variables that describe the current state of the line read so far. - -

    -

    -The calling sequence for a command foo looks like - -

    - -
    -foo (int count, int key)
-
    - -

    -where count is the numeric argument (or 1 if defaulted) and -key is the key that invoked this function. - -

    -

    -It is completely up to the function as to what should be done with the -numeric argument. Some functions use it as a repeat count, some -as a flag, and others to choose alternate behavior (refreshing the current -line as opposed to refreshing the screen, for example). Some choose to -ignore it. In general, if a -function uses the numeric argument as a repeat count, it should be able -to do something useful with both negative and positive arguments. -At the very least, it should be aware that it can be passed a -negative argument. - -

    - - -

    Readline Variables

    - -

    -These variables are available to function writers. - -

    -

    -

    -
    Variable: char * rl_line_buffer -
    -This is the line gathered so far. You are welcome to modify the -contents of the line, but see section Allowing Undoing. The -function rl_extend_line_buffer is available to increase -the memory allocated to rl_line_buffer. -
    - -

    -

    -

    -
    Variable: int rl_point -
    -The offset of the current cursor position in rl_line_buffer -(the point). -
    - -

    -

    -

    -
    Variable: int rl_end -
    -The number of characters present in rl_line_buffer. When -rl_point is at the end of the line, rl_point and -rl_end are equal. -
    - -

    -

    -

    -
    Variable: int rl_mark -
    -The mark (saved position) in the current line. If set, the mark -and point define a region. -
    - -

    -

    -

    -
    Variable: int rl_done -
    -Setting this to a non-zero value causes Readline to return the current -line immediately. -
    - -

    -

    -

    -
    Variable: int rl_num_chars_to_read -
    -Setting this to a positive value before calling readline() causes -Readline to return after accepting that many characters, rather -than reading up to a character bound to accept-line. -
    - -

    -

    -

    -
    Variable: int rl_pending_input -
    -Setting this to a value makes it the next keystroke read. This is a -way to stuff a single character into the input stream. -
    - -

    -

    -

    -
    Variable: int rl_dispatching -
    -Set to a non-zero value if a function is being called from a key binding; -zero otherwise. Application functions can test this to discover whether -they were called directly or by Readline's dispatching mechanism. -
    - -

    -

    -

    -
    Variable: int rl_erase_empty_line -
    -Setting this to a non-zero value causes Readline to completely erase -the current line, including any prompt, any time a newline is typed as -the only character on an otherwise-empty line. The cursor is moved to -the beginning of the newly-blank line. -
    - -

    -

    -

    -
    Variable: char * rl_prompt -
    -The prompt Readline uses. This is set from the argument to -readline(), and should not be assigned to directly. -
    - -

    -

    -

    -
    Variable: int rl_already_prompted -
    -If an application wishes to display the prompt itself, rather than have -Readline do it the first time readline() is called, it should set -this variable to a non-zero value after displaying the prompt. -The prompt must also be passed as the argument to readline() so -the redisplay functions can update the display properly. -The calling application is responsible for managing the value; Readline -never sets it. -
    - -

    -

    -

    -
    Variable: const char * rl_library_version -
    -The version number of this revision of the library. -
    - -

    -

    -

    -
    Variable: int rl_gnu_readline_p -
    -Always set to 1, denoting that this is GNU readline rather than some -emulation. -
    - -

    -

    -

    -
    Variable: const char * rl_terminal_name -
    -The terminal type, used for initialization. If not set by the application, -Readline sets this to the value of the @env{TERM} environment variable -the first time it is called. -
    - -

    -

    -

    -
    Variable: const char * rl_readline_name -
    -This variable is set to a unique name by each application using Readline. -The value allows conditional parsing of the inputrc file -(see section Conditional Init Constructs). -
    - -

    -

    -

    -
    Variable: FILE * rl_instream -
    -The stdio stream from which Readline reads input. -
    - -

    -

    -

    -
    Variable: FILE * rl_outstream -
    -The stdio stream to which Readline performs output. -
    - -

    -

    -

    -
    Variable: rl_command_func_t * rl_last_func -
    -The address of the last command function Readline executed. May be used to -test whether or not a function is being executed twice in succession, for -example. -
    - -

    -

    -

    -
    Variable: rl_hook_func_t * rl_startup_hook -
    -If non-zero, this is the address of a function to call just -before readline prints the first prompt. -
    - -

    -

    -

    -
    Variable: rl_hook_func_t * rl_pre_input_hook -
    -If non-zero, this is the address of a function to call after -the first prompt has been printed and just before readline -starts reading input characters. -
    - -

    -

    -

    -
    Variable: rl_hook_func_t * rl_event_hook -
    -If non-zero, this is the address of a function to call periodically -when readline is waiting for terminal input. -
    - -

    -

    -

    -
    Variable: rl_getc_func_t * rl_getc_function -
    -If non-zero, readline will call indirectly through this pointer -to get a character from the input stream. By default, it is set to -rl_getc, the default readline character input function -(see section Character Input). -
    - -

    -

    -

    -
    Variable: rl_voidfunc_t * rl_redisplay_function -
    -If non-zero, readline will call indirectly through this pointer -to update the display with the current contents of the editing buffer. -By default, it is set to rl_redisplay, the default readline -redisplay function (see section Redisplay). -
    - -

    -

    -

    -
    Variable: rl_vintfunc_t * rl_prep_term_function -
    -If non-zero, readline will call indirectly through this pointer -to initialize the terminal. The function takes a single argument, an -int flag that says whether or not to use eight-bit characters. -By default, this is set to rl_prep_terminal -(see section Terminal Management). -
    - -

    -

    -

    -
    Variable: rl_voidfunc_t * rl_deprep_term_function -
    -If non-zero, readline will call indirectly through this pointer -to reset the terminal. This function should undo the effects of -rl_prep_term_function. -By default, this is set to rl_deprep_terminal -(see section Terminal Management). -
    - -

    -

    -

    -
    Variable: Keymap rl_executing_keymap -
    -This variable is set to the keymap (see section Selecting a Keymap) in which the -currently executing readline function was found. -
    - -

    -

    -

    -
    Variable: Keymap rl_binding_keymap -
    -This variable is set to the keymap (see section Selecting a Keymap) in which the -last key binding occurred. -
    - -

    -

    -

    -
    Variable: char * rl_executing_macro -
    -This variable is set to the text of any currently-executing macro. -
    - -

    -

    -

    -
    Variable: int rl_readline_state -
    -A variable with bit values that encapsulate the current Readline state. -A bit is set with the RL_SETSTATE macro, and unset with the -RL_UNSETSTATE macro. Use the RL_ISSTATE macro to test -whether a particular state bit is set. Current state bits include: - -

    -
    - -
    RL_STATE_NONE -
    -Readline has not yet been called, nor has it begun to intialize. -
    RL_STATE_INITIALIZING -
    -Readline is initializing its internal data structures. -
    RL_STATE_INITIALIZED -
    -Readline has completed its initialization. -
    RL_STATE_TERMPREPPED -
    -Readline has modified the terminal modes to do its own input and redisplay. -
    RL_STATE_READCMD -
    -Readline is reading a command from the keyboard. -
    RL_STATE_METANEXT -
    -Readline is reading more input after reading the meta-prefix character. -
    RL_STATE_DISPATCHING -
    -Readline is dispatching to a command. -
    RL_STATE_MOREINPUT -
    -Readline is reading more input while executing an editing command. -
    RL_STATE_ISEARCH -
    -Readline is performing an incremental history search. -
    RL_STATE_NSEARCH -
    -Readline is performing a non-incremental history search. -
    RL_STATE_SEARCH -
    -Readline is searching backward or forward through the history for a string. -
    RL_STATE_NUMERICARG -
    -Readline is reading a numeric argument. -
    RL_STATE_MACROINPUT -
    -Readline is currently getting its input from a previously-defined keyboard -macro. -
    RL_STATE_MACRODEF -
    -Readline is currently reading characters defining a keyboard macro. -
    RL_STATE_OVERWRITE -
    -Readline is in overwrite mode. -
    RL_STATE_COMPLETING -
    -Readline is performing word completion. -
    RL_STATE_SIGHANDLER -
    -Readline is currently executing the readline signal handler. -
    RL_STATE_UNDOING -
    -Readline is performing an undo. -
    RL_STATE_DONE -
    -Readline has read a key sequence bound to accept-line -and is about to return the line to the caller. -
    - -
    - -

    -

    -
    Variable: int rl_explicit_arg -
    -Set to a non-zero value if an explicit numeric argument was specified by -the user. Only valid in a bindable command function. -
    - -

    -

    -

    -
    Variable: int rl_numeric_arg -
    -Set to the value of any numeric argument explicitly specified by the user -before executing the current Readline function. Only valid in a bindable -command function. -
    - -

    -

    -

    -
    Variable: int rl_editing_mode -
    -Set to a value denoting Readline's current editing mode. A value of -emacs_mode means Readline is currently in emacs mode; vi_mode -means that vi mode is active. -
    - -

    - - - -

    Readline Convenience Functions

    - - - - - - -

    Naming a Function

    - -

    -The user can dynamically change the bindings of keys while using -Readline. This is done by representing the function with a descriptive -name. The user is able to type the descriptive name when referring to -the function. Thus, in an init file, one might find - -

    - -
    -Meta-Rubout:	backward-kill-word
-
    - -

    -This binds the keystroke Meta-Rubout to the function -descriptively named backward-kill-word. You, as the -programmer, should bind the functions you write to descriptive names as -well. Readline provides a function for doing that: - -

    -

    -

    -
    Function: int rl_add_defun (const char *name, rl_command_func_t *function, int key) -
    -Add name to the list of named functions. Make function be -the function that gets called. If key is not -1, then bind it to -function using rl_bind_key(). -
    - -

    -

    -Using this function alone is sufficient for most applications. It is -the recommended way to add a few functions to the default functions that -Readline has built in. If you need to do something other -than adding a function to Readline, you may need to use the -underlying functions described below. - -

    - - -

    Selecting a Keymap

    - -

    -Key bindings take place on a keymap. The keymap is the -association between the keys that the user types and the functions that -get run. You can make your own keymaps, copy existing keymaps, and tell -Readline which keymap to use. - -

    -

    -

    -
    Function: Keymap rl_make_bare_keymap (void) -
    -Returns a new, empty keymap. The space for the keymap is allocated with -malloc(); the caller should free it by calling -rl_discard_keymap() when done. -
    - -

    -

    -

    -
    Function: Keymap rl_copy_keymap (Keymap map) -
    -Return a new keymap which is a copy of map. -
    - -

    -

    -

    -
    Function: Keymap rl_make_keymap (void) -
    -Return a new keymap with the printing characters bound to rl_insert, -the lowercase Meta characters bound to run their equivalents, and -the Meta digits bound to produce numeric arguments. -
    - -

    -

    -

    -
    Function: void rl_discard_keymap (Keymap keymap) -
    -Free the storage associated with keymap. -
    - -

    -

    -Readline has several internal keymaps. These functions allow you to -change which keymap is active. - -

    -

    -

    -
    Function: Keymap rl_get_keymap (void) -
    -Returns the currently active keymap. -
    - -

    -

    -

    -
    Function: void rl_set_keymap (Keymap keymap) -
    -Makes keymap the currently active keymap. -
    - -

    -

    -

    -
    Function: Keymap rl_get_keymap_by_name (const char *name) -
    -Return the keymap matching name. name is one which would -be supplied in a set keymap inputrc line (see section Readline Init File). -
    - -

    -

    -

    -
    Function: char * rl_get_keymap_name (Keymap keymap) -
    -Return the name matching keymap. name is one which would -be supplied in a set keymap inputrc line (see section Readline Init File). -
    - -

    - - -

    Binding Keys

    - -

    -Key sequences are associate with functions through the keymap. -Readline has several internal keymaps: emacs_standard_keymap, -emacs_meta_keymap, emacs_ctlx_keymap, -vi_movement_keymap, and vi_insertion_keymap. -emacs_standard_keymap is the default, and the examples in -this manual assume that. - -

    -

    -Since readline() installs a set of default key bindings the first -time it is called, there is always the danger that a custom binding -installed before the first call to readline() will be overridden. -An alternate mechanism is to install custom key bindings in an -initialization function assigned to the rl_startup_hook variable -(see section Readline Variables). - -

    -

    -These functions manage key bindings. - -

    -

    -

    -
    Function: int rl_bind_key (int key, rl_command_func_t *function) -
    -Binds key to function in the currently active keymap. -Returns non-zero in the case of an invalid key. -
    - -

    -

    -

    -
    Function: int rl_bind_key_in_map (int key, rl_command_func_t *function, Keymap map) -
    -Bind key to function in map. Returns non-zero in the case -of an invalid key. -
    - -

    -

    -

    -
    Function: int rl_unbind_key (int key) -
    -Bind key to the null function in the currently active keymap. -Returns non-zero in case of error. -
    - -

    -

    -

    -
    Function: int rl_unbind_key_in_map (int key, Keymap map) -
    -Bind key to the null function in map. -Returns non-zero in case of error. -
    - -

    -

    -

    -
    Function: int rl_unbind_function_in_map (rl_command_func_t *function, Keymap map) -
    -Unbind all keys that execute function in map. -
    - -

    -

    -

    -
    Function: int rl_unbind_command_in_map (const char *command, Keymap map) -
    -Unbind all keys that are bound to command in map. -
    - -

    -

    -

    -
    Function: int rl_set_key (const char *keyseq, rl_command_func_t *function, Keymap map) -
    -Bind the key sequence represented by the string keyseq to the function -function. This makes new keymaps as -necessary. The initial keymap in which to do bindings is map. -
    - -

    -

    -

    -
    Function: int rl_generic_bind (int type, const char *keyseq, char *data, Keymap map) -
    -Bind the key sequence represented by the string keyseq to the arbitrary -pointer data. type says what kind of data is pointed to by -data; this can be a function (ISFUNC), a macro -(ISMACR), or a keymap (ISKMAP). This makes new keymaps as -necessary. The initial keymap in which to do bindings is map. -
    - -

    -

    -

    -
    Function: int rl_parse_and_bind (char *line) -
    -Parse line as if it had been read from the inputrc file and -perform any key bindings and variable assignments found -(see section Readline Init File). -
    - -

    -

    -

    -
    Function: int rl_read_init_file (const char *filename) -
    -Read keybindings and variable assignments from filename -(see section Readline Init File). -
    - -

    - - -

    Associating Function Names and Bindings

    - -

    -These functions allow you to find out what keys invoke named functions -and the functions invoked by a particular key sequence. You may also -associate a new function name with an arbitrary function. - -

    -

    -

    -
    Function: rl_command_func_t * rl_named_function (const char *name) -
    -Return the function with name name. -
    - -

    -

    -

    -
    Function: rl_command_func_t * rl_function_of_keyseq (const char *keyseq, Keymap map, int *type) -
    -Return the function invoked by keyseq in keymap map. -If map is NULL, the current keymap is used. If type is -not NULL, the type of the object is returned in the int variable -it points to (one of ISFUNC, ISKMAP, or ISMACR). -
    - -

    -

    -

    -
    Function: char ** rl_invoking_keyseqs (rl_command_func_t *function) -
    -Return an array of strings representing the key sequences used to -invoke function in the current keymap. -
    - -

    -

    -

    -
    Function: char ** rl_invoking_keyseqs_in_map (rl_command_func_t *function, Keymap map) -
    -Return an array of strings representing the key sequences used to -invoke function in the keymap map. -
    - -

    -

    -

    -
    Function: void rl_function_dumper (int readable) -
    -Print the readline function names and the key sequences currently -bound to them to rl_outstream. If readable is non-zero, -the list is formatted in such a way that it can be made part of an -inputrc file and re-read. -
    - -

    -

    -

    -
    Function: void rl_list_funmap_names (void) -
    -Print the names of all bindable Readline functions to rl_outstream. -
    - -

    -

    -

    -
    Function: const char ** rl_funmap_names (void) -
    -Return a NULL terminated array of known function names. The array is -sorted. The array itself is allocated, but not the strings inside. You -should free() the array when you are done, but not the pointers. -
    - -

    -

    -

    -
    Function: int rl_add_funmap_entry (const char *name, rl_command_func_t *function) -
    -Add name to the list of bindable Readline command names, and make -function the function to be called when name is invoked. -
    - -

    - - -

    Allowing Undoing

    - -

    -Supporting the undo command is a painless thing, and makes your -functions much more useful. It is certainly easy to try -something if you know you can undo it. - -

    -

    -If your function simply inserts text once, or deletes text once, and -uses rl_insert_text() or rl_delete_text() to do it, then -undoing is already done for you automatically. - -

    -

    -If you do multiple insertions or multiple deletions, or any combination -of these operations, you should group them together into one operation. -This is done with rl_begin_undo_group() and -rl_end_undo_group(). - -

    -

    -The types of events that can be undone are: - -

    - -
    -enum undo_code { UNDO_DELETE, UNDO_INSERT, UNDO_BEGIN, UNDO_END }; 
-
    - -

    -Notice that UNDO_DELETE means to insert some text, and -UNDO_INSERT means to delete some text. That is, the undo code -tells what to undo, not how to undo it. UNDO_BEGIN and -UNDO_END are tags added by rl_begin_undo_group() and -rl_end_undo_group(). - -

    -

    -

    -
    Function: int rl_begin_undo_group (void) -
    -Begins saving undo information in a group construct. The undo -information usually comes from calls to rl_insert_text() and -rl_delete_text(), but could be the result of calls to -rl_add_undo(). -
    - -

    -

    -

    -
    Function: int rl_end_undo_group (void) -
    -Closes the current undo group started with rl_begin_undo_group -(). There should be one call to rl_end_undo_group() -for each call to rl_begin_undo_group(). -
    - -

    -

    -

    -
    Function: void rl_add_undo (enum undo_code what, int start, int end, char *text) -
    -Remember how to undo an event (according to what). The affected -text runs from start to end, and encompasses text. -
    - -

    -

    -

    -
    Function: void rl_free_undo_list (void) -
    -Free the existing undo list. -
    - -

    -

    -

    -
    Function: int rl_do_undo (void) -
    -Undo the first thing on the undo list. Returns 0 if there was -nothing to undo, non-zero if something was undone. -
    - -

    -

    -Finally, if you neither insert nor delete text, but directly modify the -existing text (e.g., change its case), call rl_modifying() -once, just before you modify the text. You must supply the indices of -the text range that you are going to modify. - -

    -

    -

    -
    Function: int rl_modifying (int start, int end) -
    -Tell Readline to save the text between start and end as a -single undo unit. It is assumed that you will subsequently modify -that text. -
    - -

    - - -

    Redisplay

    - -

    -

    -
    Function: void rl_redisplay (void) -
    -Change what's displayed on the screen to reflect the current contents -of rl_line_buffer. -
    - -

    -

    -

    -
    Function: int rl_forced_update_display (void) -
    -Force the line to be updated and redisplayed, whether or not -Readline thinks the screen display is correct. -
    - -

    -

    -

    -
    Function: int rl_on_new_line (void) -
    -Tell the update functions that we have moved onto a new (empty) line, -usually after ouputting a newline. -
    - -

    -

    -

    -
    Function: int rl_on_new_line_with_prompt (void) -
    -Tell the update functions that we have moved onto a new line, with -rl_prompt already displayed. -This could be used by applications that want to output the prompt string -themselves, but still need Readline to know the prompt string length for -redisplay. -It should be used after setting rl_already_prompted. -
    - -

    -

    -

    -
    Function: int rl_reset_line_state (void) -
    -Reset the display state to a clean state and redisplay the current line -starting on a new line. -
    - -

    -

    -

    -
    Function: int rl_crlf (void) -
    -Move the cursor to the start of the next screen line. -
    - -

    -

    -

    -
    Function: int rl_message (const char *, ...) -
    -The arguments are a format string as would be supplied to printf, -possibly containing conversion specifications such as `%d', and -any additional arguments necessary to satisfy the conversion specifications. -The resulting string is displayed in the echo area. The echo area -is also used to display numeric arguments and search strings. -
    - -

    -

    -

    -
    Function: int rl_clear_message (void) -
    -Clear the message in the echo area. -
    - -

    -

    -

    -
    Function: void rl_save_prompt (void) -
    -Save the local Readline prompt display state in preparation for -displaying a new message in the message area with rl_message(). -
    - -

    -

    -

    -
    Function: void rl_restore_prompt (void) -
    -Restore the local Readline prompt display state saved by the most -recent call to rl_save_prompt. -
    - -

    -

    -

    -
    Function: int rl_expand_prompt (char *prompt) -
    -Expand any special character sequences in prompt and set up the -local Readline prompt redisplay variables. -This function is called by readline(). It may also be called to -expand the primary prompt if the rl_on_new_line_with_prompt() -function or rl_already_prompted variable is used. -It returns the number of visible characters on the last line of the -(possibly multi-line) prompt. -
    - - -

    Modifying Text

    - -

    -

    -
    Function: int rl_insert_text (const char *text) -
    -Insert text into the line at the current cursor position. -
    - -

    -

    -

    -
    Function: int rl_delete_text (int start, int end) -
    -Delete the text between start and end in the current line. -
    - -

    -

    -

    -
    Function: char * rl_copy_text (int start, int end) -
    -Return a copy of the text between start and end in -the current line. -
    - -

    -

    -

    -
    Function: int rl_kill_text (int start, int end) -
    -Copy the text between start and end in the current line -to the kill ring, appending or prepending to the last kill if the -last command was a kill command. The text is deleted. -If start is less than end, -the text is appended, otherwise prepended. If the last command was -not a kill, a new kill ring slot is used. -
    - -

    - - -

    Character Input

    - -

    -

    -
    Function: int rl_read_key (void) -
    -Return the next character available from Readline's current input stream. -This handles input inserted into -the input stream via rl_pending_input (see section Readline Variables) -and rl_stuff_char(), macros, and characters read from the keyboard. -
    - -

    -

    -

    -
    Function: int rl_getc (FILE *stream) -
    -Return the next character available from stream, which is assumed to -be the keyboard. -
    - -

    -

    -

    -
    Function: int rl_stuff_char (int c) -
    -Insert c into the Readline input stream. It will be "read" -before Readline attempts to read characters from the terminal with -rl_read_key(). -
    - -

    -

    -

    -
    Function: int rl_execute_next (int c) -
    -Make c be the next command to be executed when rl_read_key() -is called. This sets rl_pending_input. -
    - -

    -

    -

    -
    Function: int rl_clear_pending_input (void) -
    -Unet rl_pending_input, effectively negating the effect of any -previous call to rl_execute_next(). This works only if the -pending input has not already been read with rl_read_key(). -
    - -

    - - -

    Terminal Management

    - -

    -

    -
    Function: int rl_prep_terminal (int meta_flag) -
    -Modify the terminal settings for Readline's use, so readline() -can read a single character at a time from the keyboard. -The meta_flag argument should be non-zero if Readline should -read eight-bit input. -
    - -

    -

    -

    -
    Function: in rl_deprep_terminal (void) -
    -Undo the effects of rl_prep_terminal(), leaving the terminal in -the state in which it was before the most recent call to -rl_prep_terminal(). -
    - -

    -

    -

    -
    Function: void rl_tty_set_default_bindings (Keymap kmap) -
    -Read the operating system's terminal editing characters (as would be displayed -by stty to their readline equivalents. The bindings are performed -in kmap. -
    - -

    -

    -

    -
    Function: int rl_reset_terminal (const char *terminal_name) -
    -Reinitialize Readline's idea of the terminal settings using -terminal_name as the terminal type (e.g., vt100). -If terminal_name is NULL, the value of the TERM -environment variable is used. -
    - -

    - - -

    Utility Functions

    - -

    -

    -
    Function: int rl_extend_line_buffer (int len) -
    -Ensure that rl_line_buffer has enough space to hold len -characters, possibly reallocating it if necessary. -
    - -

    -

    -

    -
    Function: int rl_initialize (void) -
    -Initialize or re-initialize Readline's internal state. -It's not strictly necessary to call this; readline() calls it before -reading any input. -
    - -

    -

    -

    -
    Function: int rl_ding (void) -
    -Ring the terminal bell, obeying the setting of bell-style. -
    - -

    -

    -

    -
    Function: int rl_alphabetic (int c) -
    -Return 1 if c is an alphabetic character. -
    - -

    -

    -

    -
    Function: void rl_display_match_list (char **matches, int len, int max) -
    -A convenience function for displaying a list of strings in -columnar format on Readline's output stream. matches is the list -of strings, in argv format, such as a list of completion matches. -len is the number of strings in matches, and max -is the length of the longest string in matches. This function uses -the setting of print-completions-horizontally to select how the -matches are displayed (see section Readline Init File Syntax). -
    - -

    -

    -The following are implemented as macros, defined in chardefs.h. -Applications should refrain from using them. - -

    -

    -

    -
    Function: int _rl_uppercase_p (int c) -
    -Return 1 if c is an uppercase alphabetic character. -
    - -

    -

    -

    -
    Function: int _rl_lowercase_p (int c) -
    -Return 1 if c is a lowercase alphabetic character. -
    - -

    -

    -

    -
    Function: int _rl_digit_p (int c) -
    -Return 1 if c is a numeric character. -
    - -

    -

    -

    -
    Function: int _rl_to_upper (int c) -
    -If c is a lowercase alphabetic character, return the corresponding -uppercase character. -
    - -

    -

    -

    -
    Function: int _rl_to_lower (int c) -
    -If c is an uppercase alphabetic character, return the corresponding -lowercase character. -
    - -

    -

    -

    -
    Function: int _rl_digit_value (int c) -
    -If c is a number, return the value it represents. -
    - -

    - - -

    Alternate Interface

    - -

    -An alternate interface is available to plain readline(). Some -applications need to interleave keyboard I/O with file, device, or -window system I/O, typically by using a main loop to select() -on various file descriptors. To accomodate this need, readline can -also be invoked as a `callback' function from an event loop. There -are functions available to make this easy. - -

    -

    -

    -
    Function: void rl_callback_handler_install (const char *prompt, rl_vcpfunc_t *lhandler) -
    -Set up the terminal for readline I/O and display the initial -expanded value of prompt. Save the value of lhandler to -use as a function to call when a complete line of input has been entered. -The function takes the text of the line as an argument. -
    - -

    -

    -

    -
    Function: void rl_callback_read_char (void) -
    -Whenever an application determines that keyboard input is available, it -should call rl_callback_read_char(), which will read the next -character from the current input source. If that character completes the -line, rl_callback_read_char will invoke the lhandler -function saved by rl_callback_handler_install to process the -line. EOF is indicated by calling lhandler with a -NULL line. -
    - -

    -

    -

    -
    Function: void rl_callback_handler_remove (void) -
    -Restore the terminal to its initial state and remove the line handler. -This may be called from within a callback as well as independently. -
    - -

    - - -

    An Example

    - -

    -Here is a function which changes lowercase characters to their uppercase -equivalents, and uppercase characters to lowercase. If -this function was bound to `M-c', then typing `M-c' would -change the case of the character under point. Typing `M-1 0 M-c' -would change the case of the following 10 characters, leaving the cursor on -the last character changed. - -

    - -
    -/* Invert the case of the COUNT following characters. */
-int
-invert_case_line (count, key)
-     int count, key;
-{
-  register int start, end, i;
-
-  start = rl_point;
-
-  if (rl_point >= rl_end)
-    return (0);
-
-  if (count < 0)
-    {
-      direction = -1;
-      count = -count;
-    }
-  else
-    direction = 1;
-      
-  /* Find the end of the range to modify. */
-  end = start + (count * direction);
-
-  /* Force it to be within range. */
-  if (end > rl_end)
-    end = rl_end;
-  else if (end < 0)
-    end = 0;
-
-  if (start == end)
-    return (0);
-
-  if (start > end)
-    {
-      int temp = start;
-      start = end;
-      end = temp;
-    }
-
-  /* Tell readline that we are modifying the line, so it will save
-     the undo information. */
-  rl_modifying (start, end);
-
-  for (i = start; i != end; i++)
-    {
-      if (_rl_uppercase_p (rl_line_buffer[i]))
-        rl_line_buffer[i] = _rl_to_lower (rl_line_buffer[i]);
-      else if (_rl_lowercase_p (rl_line_buffer[i]))
-        rl_line_buffer[i] = _rl_to_upper (rl_line_buffer[i]);
-    }
-  /* Move point to on top of the last character changed. */
-  rl_point = (direction == 1) ? end - 1 : start;
-  return (0);
-}
-
    - - - -

    Readline Signal Handling

    - -

    -Signals are asynchronous events sent to a process by the Unix kernel, -sometimes on behalf of another process. They are intended to indicate -exceptional events, like a user pressing the interrupt key on his -terminal, or a network connection being broken. There is a class of -signals that can be sent to the process currently reading input from -the keyboard. Since Readline changes the terminal attributes when it -is called, it needs to perform special processing when a signal is -received to restore the terminal to a sane state, or provide application -writers with functions to do so manually. - -

    -

    -Readline contains an internal signal handler that is installed for a -number of signals (SIGINT, SIGQUIT, SIGTERM, -SIGALRM, SIGTSTP, SIGTTIN, and SIGTTOU). -When one of these signals is received, the signal handler -will reset the terminal attributes to those that were in effect before -readline() was called, reset the signal handling to what it was -before readline() was called, and resend the signal to the calling -application. -If and when the calling application's signal handler returns, Readline -will reinitialize the terminal and continue to accept input. -When a SIGINT is received, the Readline signal handler performs -some additional work, which will cause any partially-entered line to be -aborted (see the description of rl_free_line_state() below). - -

    -

    -There is an additional Readline signal handler, for SIGWINCH, which -the kernel sends to a process whenever the terminal's size changes (for -example, if a user resizes an xterm). The Readline SIGWINCH -handler updates Readline's internal screen size information, and then calls -any SIGWINCH signal handler the calling application has installed. -Readline calls the application's SIGWINCH signal handler without -resetting the terminal to its original state. If the application's signal -handler does more than update its idea of the terminal size and return (for -example, a longjmp back to a main processing loop), it must -call rl_cleanup_after_signal() (described below), to restore the -terminal state. - -

    -

    -Readline provides two variables that allow application writers to -control whether or not it will catch certain signals and act on them -when they are received. It is important that applications change the -values of these variables only when calling readline(), not in -a signal handler, so Readline's internal signal state is not corrupted. - -

    -

    -

    -
    Variable: int rl_catch_signals -
    -If this variable is non-zero, Readline will install signal handlers for -SIGINT, SIGQUIT, SIGTERM, SIGALRM, -SIGTSTP, SIGTTIN, and SIGTTOU. - -

    -

    -The default value of rl_catch_signals is 1. -

    - -

    -

    -

    -
    Variable: int rl_catch_sigwinch -
    -If this variable is non-zero, Readline will install a signal handler for -SIGWINCH. - -

    -

    -The default value of rl_catch_sigwinch is 1. -

    - -

    -

    -If an application does not wish to have Readline catch any signals, or -to handle signals other than those Readline catches (SIGHUP, -for example), -Readline provides convenience functions to do the necessary terminal -and internal state cleanup upon receipt of a signal. - -

    -

    -

    -
    Function: void rl_cleanup_after_signal (void) -
    -This function will reset the state of the terminal to what it was before -readline() was called, and remove the Readline signal handlers for -all signals, depending on the values of rl_catch_signals and -rl_catch_sigwinch. -
    - -

    -

    -

    -
    Function: void rl_free_line_state (void) -
    -This will free any partial state associated with the current input line -(undo information, any partial history entry, any partially-entered -keyboard macro, and any partially-entered numeric argument). This -should be called before rl_cleanup_after_signal(). The -Readline signal handler for SIGINT calls this to abort the -current input line. -
    - -

    -

    -

    -
    Function: void rl_reset_after_signal (void) -
    -This will reinitialize the terminal and reinstall any Readline signal -handlers, depending on the values of rl_catch_signals and -rl_catch_sigwinch. -
    - -

    -

    -If an application does not wish Readline to catch SIGWINCH, it may -call rl_resize_terminal() or rl_set_screen_size() to force -Readline to update its idea of the terminal size when a SIGWINCH -is received. - -

    -

    -

    -
    Function: void rl_resize_terminal (void) -
    -Update Readline's internal screen size by reading values from the kernel. -
    - -

    -

    -

    -
    Function: void rl_set_screen_size (int rows, int cols) -
    -Set Readline's idea of the terminal size to rows rows and -cols columns. -
    - -

    -

    -The following functions install and remove Readline's signal handlers. - -

    -

    -

    -
    Function: int rl_set_signals (void) -
    -Install Readline's signal handler for SIGINT, SIGQUIT, -SIGTERM, SIGALRM, SIGTSTP, SIGTTIN, -SIGTTOU, and SIGWINCH, depending on the values of -rl_catch_signals and rl_catch_sigwinch. -
    - -

    -

    -

    -
    Function: int rl_clear_signals (void) -
    -Remove all of the Readline signal handlers installed by -rl_set_signals(). -
    - -

    - - -

    Custom Completers

    - -

    -Typically, a program that reads commands from the user has a way of -disambiguating commands and data. If your program is one of these, then -it can provide completion for commands, data, or both. -The following sections describe how your program and Readline -cooperate to provide this service. - -

    - - - - - -

    How Completing Works

    - -

    -In order to complete some text, the full list of possible completions -must be available. That is, it is not possible to accurately -expand a partial word without knowing all of the possible words -which make sense in that context. The Readline library provides -the user interface to completion, and two of the most common -completion functions: filename and username. For completing other types -of text, you must write your own completion function. This section -describes exactly what such functions must do, and provides an example. - -

    -

    -There are three major functions used to perform completion: - -

    - -
      -
    1. - -The user-interface function rl_complete(). This function is -called with the same arguments as other bindable Readline functions: -count and invoking_key. -It isolates the word to be completed and calls -rl_completion_matches() to generate a list of possible completions. -It then either lists the possible completions, inserts the possible -completions, or actually performs the -completion, depending on which behavior is desired. - -
    2. - -The internal function rl_completion_matches() uses an -application-supplied generator function to generate the list of -possible matches, and then returns the array of these matches. -The caller should place the address of its generator function in -rl_completion_entry_function. - -
    3. - -The generator function is called repeatedly from -rl_completion_matches(), returning a string each time. The -arguments to the generator function are text and state. -text is the partial word to be completed. state is zero the -first time the function is called, allowing the generator to perform -any necessary initialization, and a positive non-zero integer for -each subsequent call. The generator function returns -(char *)NULL to inform rl_completion_matches() that there are -no more possibilities left. Usually the generator function computes the -list of possible completions when state is zero, and returns them -one at a time on subsequent calls. Each string the generator function -returns as a match must be allocated with malloc(); Readline -frees the strings when it has finished with them. - -
    - -

    -

    -
    Function: int rl_complete (int ignore, int invoking_key) -
    -Complete the word at or before point. You have supplied the function -that does the initial simple matching selection algorithm (see -rl_completion_matches()). The default is to do filename completion. -
    - -

    -

    -

    -
    Variable: rl_compentry_func_t * rl_completion_entry_function -
    -This is a pointer to the generator function for -rl_completion_matches(). -If the value of rl_completion_entry_function is -NULL then the default filename generator -function, rl_filename_completion_function(), is used. -
    - -

    - - -

    Completion Functions

    - -

    -Here is the complete list of callable completion functions present in -Readline. - -

    -

    -

    -
    Function: int rl_complete_internal (int what_to_do) -
    -Complete the word at or before point. what_to_do says what to do -with the completion. A value of `?' means list the possible -completions. `TAB' means do standard completion. `*' means -insert all of the possible completions. `!' means to display -all of the possible completions, if there is more than one, as well as -performing partial completion. -
    - -

    -

    -

    -
    Function: int rl_complete (int ignore, int invoking_key) -
    -Complete the word at or before point. You have supplied the function -that does the initial simple matching selection algorithm (see -rl_completion_matches() and rl_completion_entry_function). -The default is to do filename -completion. This calls rl_complete_internal() with an -argument depending on invoking_key. -
    - -

    -

    -

    -
    Function: int rl_possible_completions (int count, int invoking_key) -
    -List the possible completions. See description of rl_complete -(). This calls rl_complete_internal() with an argument of -`?'. -
    - -

    -

    -

    -
    Function: int rl_insert_completions (int count, int invoking_key) -
    -Insert the list of possible completions into the line, deleting the -partially-completed word. See description of rl_complete(). -This calls rl_complete_internal() with an argument of `*'. -
    - -

    -

    -

    -
    Function: char ** rl_completion_matches (const char *text, rl_compentry_func_t *entry_func) -
    -Returns an array of (char *) which is a list of completions for -text. If there are no completions, returns NULL. -The first entry in the returned array is the substitution for text. -The remaining entries are the possible completions. The array is -terminated with a NULL pointer. - -

    -

    -entry_func is a function of two args, and returns a -(char *). The first argument is text. The second is a -state argument; it is zero on the first call, and non-zero on subsequent -calls. entry_func returns a NULL pointer to the caller -when there are no more matches. -

    - -

    -

    -

    -
    Function: char * rl_filename_completion_function (const char *text, int state) -
    -A generator function for filename completion in the general case. Note -that completion in Bash is a little different because of all -the pathnames that must be followed when looking up completions for a -command. The Bash source is a useful reference for writing custom -completion functions. -
    - -

    -

    -

    -
    Function: char * rl_username_completion_function (const char *text, int state) -
    -A completion generator for usernames. text contains a partial -username preceded by a random character (usually `~'). As with all -completion generators, state is zero on the first call and non-zero -for subsequent calls. -
    - -

    - - -

    Completion Variables

    - -

    -

    -
    Variable: rl_compentry_func_t * rl_completion_entry_function -
    -A pointer to the generator function for rl_completion_matches(). -NULL means to use rl_filename_completion_function(), the default -filename completer. -
    - -

    -

    -

    -
    Variable: rl_completion_func_t * rl_attempted_completion_function -
    -A pointer to an alternative function to create matches. -The function is called with text, start, and end. -start and end are indices in rl_line_buffer defining -the boundaries of text, which is a character string. -If this function exists and returns NULL, or if this variable is -set to NULL, then rl_complete() will call the value of -rl_completion_entry_function to generate matches, otherwise the -array of strings returned will be used. -If this function sets the rl_attempted_completion_over -variable to a non-zero value, Readline will not perform its default -completion if this function returns no matches. -
    - -

    -

    -

    -
    Variable: rl_quote_func_t * rl_filename_quoting_function -
    -A pointer to a function that will quote a filename in an -application-specific fashion. This is called if filename completion is being -attempted and one of the characters in rl_filename_quote_characters -appears in a completed filename. The function is called with -text, match_type, and quote_pointer. The text -is the filename to be quoted. The match_type is either -SINGLE_MATCH, if there is only one completion match, or -MULT_MATCH. Some functions use this to decide whether or not to -insert a closing quote character. The quote_pointer is a pointer -to any opening quote character the user typed. Some functions choose -to reset this character. -
    - -

    -

    -

    -
    Variable: rl_dequote_func_t * rl_filename_dequoting_function -
    -A pointer to a function that will remove application-specific quoting -characters from a filename before completion is attempted, so those -characters do not interfere with matching the text against names in -the filesystem. It is called with text, the text of the word -to be dequoted, and quote_char, which is the quoting character -that delimits the filename (usually `'' or `"'). If -quote_char is zero, the filename was not in an embedded string. -
    - -

    -

    -

    -
    Variable: rl_linebuf_func_t * rl_char_is_quoted_p -
    -A pointer to a function to call that determines whether or not a specific -character in the line buffer is quoted, according to whatever quoting -mechanism the program calling readline uses. The function is called with -two arguments: text, the text of the line, and index, the -index of the character in the line. It is used to decide whether a -character found in rl_completer_word_break_characters should be -used to break words for the completer. -
    - -

    -

    -

    -
    Variable: int rl_completion_query_items -
    -Up to this many items will be displayed in response to a -possible-completions call. After that, we ask the user if she is sure -she wants to see them all. The default value is 100. -
    - -

    -

    -

    -
    Variable: const char * rl_basic_word_break_characters -
    -The basic list of characters that signal a break between words for the -completer routine. The default value of this variable is the characters -which break words for completion in Bash, i.e., -" \t\n\"\\'`@$><=;|&{(". -
    - -

    -

    -

    -
    Variable: const char * rl_basic_quote_characters -
    -List of quote characters which can cause a word break. -
    - -

    -

    -

    -
    Variable: const char * rl_completer_word_break_characters -
    -The list of characters that signal a break between words for -rl_complete_internal(). The default list is the value of -rl_basic_word_break_characters. -
    - -

    -

    -

    -
    Variable: const char * rl_completer_quote_characters -
    -List of characters which can be used to quote a substring of the line. -Completion occurs on the entire substring, and within the substring -rl_completer_word_break_characters are treated as any other character, -unless they also appear within this list. -
    - -

    -

    -

    -
    Variable: const char * rl_filename_quote_characters -
    -A list of characters that cause a filename to be quoted by the completer -when they appear in a completed filename. The default is the null string. -
    - -

    -

    -

    -
    Variable: const char * rl_special_prefixes -
    -The list of characters that are word break characters, but should be -left in text when it is passed to the completion function. -Programs can use this to help determine what kind of completing to do. -For instance, Bash sets this variable to "$@" so that it can complete -shell variables and hostnames. -
    - -

    -

    -

    -
    Variable: int rl_completion_append_character -
    -When a single completion alternative matches at the end of the command -line, this character is appended to the inserted completion text. The -default is a space character (` '). Setting this to the null -character (`\0') prevents anything being appended automatically. -This can be changed in custom completion functions to -provide the "most sensible word separator character" according to -an application-specific command line syntax specification. -
    - -

    -

    -

    -
    Variable: int rl_ignore_completion_duplicates -
    -If non-zero, then disallow duplicates in the matches. Default is 1. -
    - -

    -

    -

    -
    Variable: int rl_filename_completion_desired -
    -Non-zero means that the results of the matches are to be treated as -filenames. This is always zero on entry, and can only be changed -within a completion entry generator function. If it is set to a non-zero -value, directory names have a slash appended and Readline attempts to -quote completed filenames if they contain any characters in -rl_filename_quote_characters and rl_filename_quoting_desired -is set to a non-zero value. -
    - -

    -

    -

    -
    Variable: int rl_filename_quoting_desired -
    -Non-zero means that the results of the matches are to be quoted using -double quotes (or an application-specific quoting mechanism) if the -completed filename contains any characters in -rl_filename_quote_chars. This is always non-zero -on entry, and can only be changed within a completion entry generator -function. The quoting is effected via a call to the function pointed to -by rl_filename_quoting_function. -
    - -

    -

    -

    -
    Variable: int rl_attempted_completion_over -
    -If an application-specific completion function assigned to -rl_attempted_completion_function sets this variable to a non-zero -value, Readline will not perform its default filename completion if the -application's completion function returns no matches. -It should be set only by an application's completion function. -
    - -

    -

    -

    -
    Variable: int rl_completion_type -
    -Set to a character describing the type of completion Readline is currently -attempting; see the description of rl_complete_internal() -(see section Completion Functions) for the list of characters. -
    - -

    -

    -

    -
    Variable: int rl_inhibit_completion -
    -If this variable is non-zero, completion is inhibited. The completion -character will be inserted as any other bound to self-insert. -
    - -

    -

    -

    -
    Variable: rl_compignore_func_t * rl_ignore_some_completions_function -
    -This function, if defined, is called by the completer when real filename -completion is done, after all the matching names have been generated. -It is passed a NULL terminated array of matches. -The first element (matches[0]) is the -maximal substring common to all matches. This function can -re-arrange the list of matches as required, but each element deleted -from the array must be freed. -
    - -

    -

    -

    -
    Variable: rl_icppfunc_t * rl_directory_completion_hook -
    -This function, if defined, is allowed to modify the directory portion -of filenames Readline completes. It is called with the address of a -string (the current directory name) as an argument, and may modify that string. -If the string is replaced with a new string, the old value should be freed. -Any modified directory name should have a trailing slash. -The modified value will be displayed as part of the completion, replacing -the directory portion of the pathname the user typed. -It returns an integer that should be non-zero if the function modifies -its directory argument. -It could be used to expand symbolic links or shell variables in pathnames. -
    - -

    -

    -

    -
    Variable: rl_compdisp_func_t * rl_completion_display_matches_hook -
    -If non-zero, then this is the address of a function to call when -completing a word would normally display the list of possible matches. -This function is called in lieu of Readline displaying the list. -It takes three arguments: -(char **matches, int num_matches, int max_length) -where matches is the array of matching strings, -num_matches is the number of strings in that array, and -max_length is the length of the longest string in that array. -Readline provides a convenience function, rl_display_match_list, -that takes care of doing the display to Readline's output stream. That -function may be called from this hook. -
    - -

    - - -

    A Short Completion Example

    - -

    -Here is a small application demonstrating the use of the GNU Readline -library. It is called fileman, and the source code resides in -`examples/fileman.c'. This sample application provides -completion of command names, line editing features, and access to the -history list. - -

    - -
    -/* fileman.c -- A tiny application which demonstrates how to use the
-   GNU Readline library.  This application interactively allows users
-   to manipulate files and their modes. */
-
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/file.h>
-#include <sys/stat.h>
-#include <sys/errno.h>
-
-#include <readline/readline.h>
-#include <readline/history.h>
-
-extern char *xmalloc ();
-
-/* The names of functions that actually do the manipulation. */
-int com_list __P((char *));
-int com_view __P((char *));
-int com_rename __P((char *));
-int com_stat __P((char *));
-int com_pwd __P((char *));
-int com_delete __P((char *));
-int com_help __P((char *));
-int com_cd __P((char *));
-int com_quit __P((char *));
-
-/* A structure which contains information on the commands this program
-   can understand. */
-
-typedef struct {
-  char *name;			/* User printable name of the function. */
-  rl_icpfunc_t *func;		/* Function to call to do the job. */
-  char *doc;			/* Documentation for this function.  */
-} COMMAND;
-
-COMMAND commands[] = {
-  { "cd", com_cd, "Change to directory DIR" },
-  { "delete", com_delete, "Delete FILE" },
-  { "help", com_help, "Display this text" },
-  { "?", com_help, "Synonym for `help'" },
-  { "list", com_list, "List files in DIR" },
-  { "ls", com_list, "Synonym for `list'" },
-  { "pwd", com_pwd, "Print the current working directory" },
-  { "quit", com_quit, "Quit using Fileman" },
-  { "rename", com_rename, "Rename FILE to NEWNAME" },
-  { "stat", com_stat, "Print out statistics on FILE" },
-  { "view", com_view, "View the contents of FILE" },
-  { (char *)NULL, (rl_icpfunc_t *)NULL, (char *)NULL }
-};
-
-/* Forward declarations. */
-char *stripwhite ();
-COMMAND *find_command ();
-
-/* The name of this program, as taken from argv[0]. */
-char *progname;
-
-/* When non-zero, this means the user is done using this program. */
-int done;
-
-char *
-dupstr (s)
-     int s;
-{
-  char *r;
-
-  r = xmalloc (strlen (s) + 1);
-  strcpy (r, s);
-  return (r);
-}
-
-main (argc, argv)
-     int argc;
-     char **argv;
-{
-  char *line, *s;
-
-  progname = argv[0];
-
-  initialize_readline ();	/* Bind our completer. */
-
-  /* Loop reading and executing lines until the user quits. */
-  for ( ; done == 0; )
-    {
-      line = readline ("FileMan: ");
-
-      if (!line)
-        break;
-
-      /* Remove leading and trailing whitespace from the line.
-         Then, if there is anything left, add it to the history list
-         and execute it. */
-      s = stripwhite (line);
-
-      if (*s)
-        {
-          add_history (s);
-          execute_line (s);
-        }
-
-      free (line);
-    }
-  exit (0);
-}
-
-/* Execute a command line. */
-int
-execute_line (line)
-     char *line;
-{
-  register int i;
-  COMMAND *command;
-  char *word;
-
-  /* Isolate the command word. */
-  i = 0;
-  while (line[i] && whitespace (line[i]))
-    i++;
-  word = line + i;
-
-  while (line[i] && !whitespace (line[i]))
-    i++;
-
-  if (line[i])
-    line[i++] = '\0';
-
-  command = find_command (word);
-
-  if (!command)
-    {
-      fprintf (stderr, "%s: No such command for FileMan.\n", word);
-      return (-1);
-    }
-
-  /* Get argument to command, if any. */
-  while (whitespace (line[i]))
-    i++;
-
-  word = line + i;
-
-  /* Call the function. */
-  return ((*(command->func)) (word));
-}
-
-/* Look up NAME as the name of a command, and return a pointer to that
-   command.  Return a NULL pointer if NAME isn't a command name. */
-COMMAND *
-find_command (name)
-     char *name;
-{
-  register int i;
-
-  for (i = 0; commands[i].name; i++)
-    if (strcmp (name, commands[i].name) == 0)
-      return (&commands[i]);
-
-  return ((COMMAND *)NULL);
-}
-
-/* Strip whitespace from the start and end of STRING.  Return a pointer
-   into STRING. */
-char *
-stripwhite (string)
-     char *string;
-{
-  register char *s, *t;
-
-  for (s = string; whitespace (*s); s++)
-    ;
-    
-  if (*s == 0)
-    return (s);
-
-  t = s + strlen (s) - 1;
-  while (t > s && whitespace (*t))
-    t--;
-  *++t = '\0';
-
-  return s;
-}
-
-/* **************************************************************** */
-/*                                                                  */
-/*                  Interface to Readline Completion                */
-/*                                                                  */
-/* **************************************************************** */
-
-char *command_generator __P((const char *, int));
-char **fileman_completion __P((const char *, int, int));
-
-/* Tell the GNU Readline library how to complete.  We want to try to
-   complete on command names if this is the first word in the line, or
-   on filenames if not. */
-initialize_readline ()
-{
-  /* Allow conditional parsing of the ~/.inputrc file. */
-  rl_readline_name = "FileMan";
-
-  /* Tell the completer that we want a crack first. */
-  rl_attempted_completion_function = fileman_completion;
-}
-
-/* Attempt to complete on the contents of TEXT.  START and END
-   bound the region of rl_line_buffer that contains the word to
-   complete.  TEXT is the word to complete.  We can use the entire
-   contents of rl_line_buffer in case we want to do some simple
-   parsing.  Returnthe array of matches, or NULL if there aren't any. */
-char **
-fileman_completion (text, start, end)
-     const char *text;
-     int start, end;
-{
-  char **matches;
-
-  matches = (char **)NULL;
-
-  /* If this word is at the start of the line, then it is a command
-     to complete.  Otherwise it is the name of a file in the current
-     directory. */
-  if (start == 0)
-    matches = rl_completion_matches (text, command_generator);
-
-  return (matches);
-}
-
-/* Generator function for command completion.  STATE lets us
-   know whether to start from scratch; without any state
-   (i.e. STATE == 0), then we start at the top of the list. */
-char *
-command_generator (text, state)
-     const char *text;
-     int state;
-{
-  static int list_index, len;
-  char *name;
-
-  /* If this is a new word to complete, initialize now.  This
-     includes saving the length of TEXT for efficiency, and
-     initializing the index variable to 0. */
-  if (!state)
-    {
-      list_index = 0;
-      len = strlen (text);
-    }
-
-  /* Return the next name which partially matches from the
-     command list. */
-  while (name = commands[list_index].name)
-    {
-      list_index++;
-
-      if (strncmp (name, text, len) == 0)
-        return (dupstr(name));
-    }
-
-  /* If no names matched, then return NULL. */
-  return ((char *)NULL);
-}
-
-/* **************************************************************** */
-/*                                                                  */
-/*                       FileMan Commands                           */
-/*                                                                  */
-/* **************************************************************** */
-
-/* String to pass to system ().  This is for the LIST, VIEW and RENAME
-   commands. */
-static char syscom[1024];
-
-/* List the file(s) named in arg. */
-com_list (arg)
-     char *arg;
-{
-  if (!arg)
-    arg = "";
-
-  sprintf (syscom, "ls -FClg %s", arg);
-  return (system (syscom));
-}
-
-com_view (arg)
-     char *arg;
-{
-  if (!valid_argument ("view", arg))
-    return 1;
-
-  sprintf (syscom, "more %s", arg);
-  return (system (syscom));
-}
-
-com_rename (arg)
-     char *arg;
-{
-  too_dangerous ("rename");
-  return (1);
-}
-
-com_stat (arg)
-     char *arg;
-{
-  struct stat finfo;
-
-  if (!valid_argument ("stat", arg))
-    return (1);
-
-  if (stat (arg, &finfo) == -1)
-    {
-      perror (arg);
-      return (1);
-    }
-
-  printf ("Statistics for `%s':\n", arg);
-
-  printf ("%s has %d link%s, and is %d byte%s in length.\n", arg,
-          finfo.st_nlink,
-          (finfo.st_nlink == 1) ? "" : "s",
-          finfo.st_size,
-          (finfo.st_size == 1) ? "" : "s");
-  printf ("Inode Last Change at: %s", ctime (&finfo.st_ctime));
-  printf ("      Last access at: %s", ctime (&finfo.st_atime));
-  printf ("    Last modified at: %s", ctime (&finfo.st_mtime));
-  return (0);
-}
-
-com_delete (arg)
-     char *arg;
-{
-  too_dangerous ("delete");
-  return (1);
-}
-
-/* Print out help for ARG, or for all of the commands if ARG is
-   not present. */
-com_help (arg)
-     char *arg;
-{
-  register int i;
-  int printed = 0;
-
-  for (i = 0; commands[i].name; i++)
-    {
-      if (!*arg || (strcmp (arg, commands[i].name) == 0))
-        {
-          printf ("%s\t\t%s.\n", commands[i].name, commands[i].doc);
-          printed++;
-        }
-    }
-
-  if (!printed)
-    {
-      printf ("No commands match `%s'.  Possibilties are:\n", arg);
-
-      for (i = 0; commands[i].name; i++)
-        {
-          /* Print in six columns. */
-          if (printed == 6)
-            {
-              printed = 0;
-              printf ("\n");
-            }
-
-          printf ("%s\t", commands[i].name);
-          printed++;
-        }
-
-      if (printed)
-        printf ("\n");
-    }
-  return (0);
-}
-
-/* Change to the directory ARG. */
-com_cd (arg)
-     char *arg;
-{
-  if (chdir (arg) == -1)
-    {
-      perror (arg);
-      return 1;
-    }
-
-  com_pwd ("");
-  return (0);
-}
-
-/* Print out the current working directory. */
-com_pwd (ignore)
-     char *ignore;
-{
-  char dir[1024], *s;
-
-  s = getcwd (dir, sizeof(dir) - 1);
-  if (s == 0)
-    {
-      printf ("Error getting pwd: %s\n", dir);
-      return 1;
-    }
-
-  printf ("Current directory is %s\n", dir);
-  return 0;
-}
-
-/* The user wishes to quit using this program.  Just set DONE
-   non-zero. */
-com_quit (arg)
-     char *arg;
-{
-  done = 1;
-  return (0);
-}
-
-/* Function which tells you that you can't do this. */
-too_dangerous (caller)
-     char *caller;
-{
-  fprintf (stderr,
-           "%s: Too dangerous for me to distribute.  Write it yourself.\n",
-           caller);
-}
-
-/* Return non-zero if ARG is a valid argument for CALLER, else print
-   an error message and return zero. */
-int
-valid_argument (caller, arg)
-     char *caller, *arg;
-{
-  if (!arg || !*arg)
-    {
-      fprintf (stderr, "%s: Argument required.\n", caller);
-      return (0);
-    }
-
-  return (1);
-}
-
    - - - -

    Concept Index

    -

    -Jump to: -c -- -e -- -i -- -k -- -n -- -r -- -y -

    -

    c

    - -
  • command editing -
    •  -

    e

    - -
  • editing command lines -
    •  -

    i

    - -
  • initialization file, readline -
  • interaction, readline -
    •  -

    k

    - -
  • kill ring -
  • killing text -
    •  -

    n

    - -
  • notation, readline -
    •  -

    r

    - -
  • readline, function -
    •  -

    y

    - -
  • yanking text -
    •  - -

    - - -

    Function and Variable Index

    -

    -Jump to: -_ -- -a -- -b -- -c -- -d -- -e -- -f -- -h -- -i -- -k -- -m -- -n -- -o -- -p -- -q -- -r -- -s -- -t -- -u -- -v -- -y -

    -

    _

    - -
  • _rl_digit_p -
  • _rl_digit_value -
  • _rl_lowercase_p -
  • _rl_to_lower -
  • _rl_to_upper -
  • _rl_uppercase_p -
    •  -

    a

    - -
  • abort (C-g) -
  • accept-line (Newline or Return) -
    •  -

    b

    - -
  • backward-char (C-b) -
  • backward-delete-char (Rubout) -
  • backward-kill-line (C-x Rubout) -
  • backward-kill-word (M-DEL) -
  • backward-word (M-b) -
  • beginning-of-history (M-&#60;) -
  • beginning-of-line (C-a) -
  • bell-style -
    •  -

    c

    - -
  • call-last-kbd-macro (C-x e) -
  • capitalize-word (M-c) -
  • character-search (C-]) -
  • character-search-backward (M-C-]) -
  • clear-screen (C-l) -
  • comment-begin -
  • complete (TAB) -
  • completion-query-items -
  • convert-meta -
  • copy-backward-word () -
  • copy-forward-word () -
  • copy-region-as-kill () -
    •  -

    d

    - -
  • delete-char (C-d) -
  • delete-char-or-list () -
  • delete-horizontal-space () -
  • digit-argument (M-0, M-1, ... M--) -
  • disable-completion -
  • do-uppercase-version (M-a, M-b, M-x, ...) -
  • downcase-word (M-l) -
  • dump-functions () -
  • dump-macros () -
  • dump-variables () -
    •  -

    e

    - -
  • editing-mode -
  • enable-keypad -
  • end-kbd-macro (C-x )) -
  • end-of-history (M-&#62;) -
  • end-of-line (C-e) -
  • exchange-point-and-mark (C-x C-x) -
  • expand-tilde -
    •  -

    f

    - -
  • forward-backward-delete-char () -
  • forward-char (C-f) -
  • forward-search-history (C-s) -
  • forward-word (M-f) -
    •  -

    h

    - -
  • history-search-backward () -
  • history-search-forward () -
  • horizontal-scroll-mode -
    •  -

    i

    - -
  • input-meta -
  • insert-comment (M-#) -
  • insert-completions (M-*) -
  • isearch-terminators -
    •  -

    k

    - -
  • keymap -
  • kill-line (C-k) -
  • kill-region () -
  • kill-whole-line () -
  • kill-word (M-d) -
    •  -

    m

    - -
  • mark-modified-lines -
  • menu-complete () -
  • meta-flag -
    •  -

    n

    - -
  • next-history (C-n) -
  • non-incremental-forward-search-history (M-n) -
  • non-incremental-reverse-search-history (M-p) -
    •  -

    o

    - -
  • output-meta -
    •  -

    p

    - -
  • possible-completions (M-?) -
  • prefix-meta (ESC) -
  • previous-history (C-p) -
    •  -

    q

    - -
  • quoted-insert (C-q or C-v) -
    •  -

    r

    - -
  • re-read-init-file (C-x C-r) -
  • readline -
  • redraw-current-line () -
  • reverse-search-history (C-r) -
  • revert-line (M-r) -
  • rl_add_defun -
  • rl_add_funmap_entry -
  • rl_add_undo -
  • rl_alphabetic -
  • rl_already_prompted -
  • rl_attempted_completion_function -
  • rl_attempted_completion_over -
  • rl_basic_quote_characters -
  • rl_basic_word_break_characters -
  • rl_begin_undo_group -
  • rl_bind_key -
  • rl_bind_key_in_map -
  • rl_binding_keymap -
  • rl_callback_handler_install -
  • rl_callback_handler_remove -
  • rl_callback_read_char -
  • rl_catch_signals -
  • rl_catch_sigwinch -
  • rl_char_is_quoted_p -
  • rl_cleanup_after_signal -
  • rl_clear_message -
  • rl_clear_pending_input -
  • rl_clear_signals -
  • rl_complete, rl_complete -
  • rl_complete_internal -
  • rl_completer_quote_characters -
  • rl_completer_word_break_characters -
  • rl_completion_append_character -
  • rl_completion_display_matches_hook -
  • rl_completion_entry_function, rl_completion_entry_function -
  • rl_completion_matches -
  • rl_completion_query_items -
  • rl_completion_type -
  • rl_copy_keymap -
  • rl_copy_text -
  • rl_crlf -
  • rl_delete_text -
  • rl_deprep_term_function -
  • rl_deprep_terminal -
  • rl_ding -
  • rl_directory_completion_hook -
  • rl_discard_keymap -
  • rl_dispatching -
  • rl_display_match_list -
  • rl_do_undo -
  • rl_done -
  • rl_editing_mode -
  • rl_end -
  • rl_end_undo_group -
  • rl_erase_empty_line -
  • rl_event_hook -
  • rl_execute_next -
  • rl_executing_keymap -
  • rl_executing_macro -
  • rl_expand_prompt -
  • rl_explicit_arg -
  • rl_extend_line_buffer -
  • rl_filename_completion_desired -
  • rl_filename_completion_function -
  • rl_filename_dequoting_function -
  • rl_filename_quote_characters -
  • rl_filename_quoting_desired -
  • rl_filename_quoting_function -
  • rl_forced_update_display -
  • rl_free_line_state -
  • rl_free_undo_list -
  • rl_function_dumper -
  • rl_function_of_keyseq -
  • rl_funmap_names -
  • rl_generic_bind -
  • rl_get_keymap -
  • rl_get_keymap_by_name -
  • rl_get_keymap_name -
  • rl_getc -
  • rl_getc_function -
  • rl_gnu_readline_p -
  • rl_ignore_completion_duplicates -
  • rl_ignore_some_completions_function -
  • rl_inhibit_completion -
  • rl_initialize -
  • rl_insert_completions -
  • rl_insert_text -
  • rl_instream -
  • rl_invoking_keyseqs -
  • rl_invoking_keyseqs_in_map -
  • rl_kill_text -
  • rl_last_func -
  • rl_library_version -
  • rl_line_buffer -
  • rl_list_funmap_names -
  • rl_make_bare_keymap -
  • rl_make_keymap -
  • rl_mark -
  • rl_message -
  • rl_modifying -
  • rl_named_function -
  • rl_num_chars_to_read -
  • rl_numeric_arg -
  • rl_on_new_line -
  • rl_on_new_line_with_prompt -
  • rl_outstream -
  • rl_parse_and_bind -
  • rl_pending_input -
  • rl_point -
  • rl_possible_completions -
  • rl_pre_input_hook -
  • rl_prep_term_function -
  • rl_prep_terminal -
  • rl_prompt -
  • rl_read_init_file -
  • rl_read_key -
  • rl_readline_name -
  • rl_readline_state -
  • rl_redisplay -
  • rl_redisplay_function -
  • rl_reset_after_signal -
  • rl_reset_line_state -
  • rl_reset_terminal -
  • rl_resize_terminal -
  • rl_restore_prompt -
  • rl_save_prompt -
  • rl_set_key -
  • rl_set_keymap -
  • rl_set_screen_size -
  • rl_set_signals -
  • rl_special_prefixes -
  • rl_startup_hook -
  • rl_stuff_char -
  • rl_terminal_name -
  • rl_tty_set_default_bindings -
  • rl_unbind_command_in_map -
  • rl_unbind_function_in_map -
  • rl_unbind_key -
  • rl_unbind_key_in_map -
  • rl_username_completion_function -
    •  -

    s

    - -
  • self-insert (a, b, A, 1, !, ...) -
  • set-mark (C-@) -
  • show-all-if-ambiguous -
  • start-kbd-macro (C-x () -
    •  -

    t

    - -
  • tab-insert (M-TAB) -
  • tilde-expand (M-~) -
  • transpose-chars (C-t) -
  • transpose-words (M-t) -
    •  -

    u

    - -
  • undo (C-_ or C-x C-u) -
  • universal-argument () -
  • unix-line-discard (C-u) -
  • unix-word-rubout (C-w) -
  • upcase-word (M-u) -
    •  -

    v

    - -
  • visible-stats -
    •  -

    y

    - -
  • yank (C-y) -
  • yank-last-arg (M-. or M-_) -
  • yank-nth-arg (M-C-y) -
  • yank-pop (M-y) -
    •  - -

    -

    -This document was generated on 5 Febuary 2001 using the -texi2html -translator version 1.52.

    - - diff --git a/readline/doc/readline.info b/readline/doc/readline.info deleted file mode 100644 --- a/readline/doc/readline.info +++ /dev/null @@ -1,3400 +0,0 @@ -This is readline.info, produced by makeinfo version 4.0 from -/usr/homes/chet/src/bash/readline-src/doc/rlman.texinfo. - -INFO-DIR-SECTION Libraries -START-INFO-DIR-ENTRY -* Readline: (readline). The GNU readline library API -END-INFO-DIR-ENTRY - - This document describes the GNU Readline Library, a utility which -aids in the consistency of user interface across discrete programs that -need to provide a command line interface. - - Copyright (C) 1988-2001 Free Software Foundation, Inc. - - Permission is granted to make and distribute verbatim copies of this -manual provided the copyright notice and this permission notice pare -preserved on all copies. - - Permission is granted to copy and distribute modified versions of -this manual under the conditions for verbatim copying, provided that -the entire resulting derived work is distributed under the terms of a -permission notice identical to this one. - - Permission is granted to copy and distribute translations of this -manual into another language, under the above conditions for modified -versions, except that this permission notice may be stated in a -translation approved by the Free Software Foundation. - - -File: readline.info, Node: Top, Next: Command Line Editing, Up: (dir) - -GNU Readline Library -******************** - - This document describes the GNU Readline Library, a utility which -aids in the consistency of user interface across discrete programs that -need to provide a command line interface. - -* Menu: - -* Command Line Editing:: GNU Readline User's Manual. -* Programming with GNU Readline:: GNU Readline Programmer's Manual. -* Concept Index:: Index of concepts described in this manual. -* Function and Variable Index:: Index of externally visible functions - and variables. - - -File: readline.info, Node: Command Line Editing, Next: Programming with GNU Readline, Prev: Top, Up: Top - -Command Line Editing -******************** - - This chapter describes the basic features of the GNU command line -editing interface. - -* Menu: - -* Introduction and Notation:: Notation used in this text. -* Readline Interaction:: The minimum set of commands for editing a line. -* Readline Init File:: Customizing Readline from a user's view. -* Bindable Readline Commands:: A description of most of the Readline commands - available for binding -* Readline vi Mode:: A short description of how to make Readline - behave like the vi editor. - - -File: readline.info, Node: Introduction and Notation, Next: Readline Interaction, Up: Command Line Editing - -Introduction to Line Editing -============================ - - The following paragraphs describe the notation used to represent -keystrokes. - - The text `C-k' is read as `Control-K' and describes the character -produced when the key is pressed while the Control key is depressed. - - The text `M-k' is read as `Meta-K' and describes the character -produced when the Meta key (if you have one) is depressed, and the -key is pressed. The Meta key is labeled on many keyboards. On -keyboards with two keys labeled (usually to either side of the -space bar), the on the left side is generally set to work as a -Meta key. The key on the right may also be configured to work as -a Meta key or may be configured as some other modifier, such as a -Compose key for typing accented characters. - - If you do not have a Meta or key, or another key working as a -Meta key, the identical keystroke can be generated by typing -_first_, and then typing . Either process is known as "metafying" -the key. - - The text `M-C-k' is read as `Meta-Control-k' and describes the -character produced by "metafying" `C-k'. - - In addition, several keys have their own names. Specifically, -, , , , , and all stand for themselves -when seen in this text, or in an init file (*note Readline Init File::). -If your keyboard lacks a key, typing will produce the -desired character. The key may be labeled or on -some keyboards. - - -File: readline.info, Node: Readline Interaction, Next: Readline Init File, Prev: Introduction and Notation, Up: Command Line Editing - -Readline Interaction -==================== - - Often during an interactive session you type in a long line of text, -only to notice that the first word on the line is misspelled. The -Readline library gives you a set of commands for manipulating the text -as you type it in, allowing you to just fix your typo, and not forcing -you to retype the majority of the line. Using these editing commands, -you move the cursor to the place that needs correction, and delete or -insert the text of the corrections. Then, when you are satisfied with -the line, you simply press . You do not have to be at the end of -the line to press ; the entire line is accepted regardless of the -location of the cursor within the line. - -* Menu: - -* Readline Bare Essentials:: The least you need to know about Readline. -* Readline Movement Commands:: Moving about the input line. -* Readline Killing Commands:: How to delete text, and how to get it back! -* Readline Arguments:: Giving numeric arguments to commands. -* Searching:: Searching through previous lines. - - -File: readline.info, Node: Readline Bare Essentials, Next: Readline Movement Commands, Up: Readline Interaction - -Readline Bare Essentials ------------------------- - - In order to enter characters into the line, simply type them. The -typed character appears where the cursor was, and then the cursor moves -one space to the right. If you mistype a character, you can use your -erase character to back up and delete the mistyped character. - - Sometimes you may mistype a character, and not notice the error -until you have typed several other characters. In that case, you can -type `C-b' to move the cursor to the left, and then correct your -mistake. Afterwards, you can move the cursor to the right with `C-f'. - - When you add text in the middle of a line, you will notice that -characters to the right of the cursor are `pushed over' to make room -for the text that you have inserted. Likewise, when you delete text -behind the cursor, characters to the right of the cursor are `pulled -back' to fill in the blank space created by the removal of the text. A -list of the bare essentials for editing the text of an input line -follows. - -`C-b' - Move back one character. - -`C-f' - Move forward one character. - - or - Delete the character to the left of the cursor. - -`C-d' - Delete the character underneath the cursor. - -Printing characters - Insert the character into the line at the cursor. - -`C-_' or `C-x C-u' - Undo the last editing command. You can undo all the way back to an - empty line. - -(Depending on your configuration, the key be set to delete -the character to the left of the cursor and the key set to delete -the character underneath the cursor, like `C-d', rather than the -character to the left of the cursor.) - - -File: readline.info, Node: Readline Movement Commands, Next: Readline Killing Commands, Prev: Readline Bare Essentials, Up: Readline Interaction - -Readline Movement Commands --------------------------- - - The above table describes the most basic keystrokes that you need in -order to do editing of the input line. For your convenience, many -other commands have been added in addition to `C-b', `C-f', `C-d', and -. Here are some commands for moving more rapidly about the line. - -`C-a' - Move to the start of the line. - -`C-e' - Move to the end of the line. - -`M-f' - Move forward a word, where a word is composed of letters and - digits. - -`M-b' - Move backward a word. - -`C-l' - Clear the screen, reprinting the current line at the top. - - Notice how `C-f' moves forward a character, while `M-f' moves -forward a word. It is a loose convention that control keystrokes -operate on characters while meta keystrokes operate on words. - - -File: readline.info, Node: Readline Killing Commands, Next: Readline Arguments, Prev: Readline Movement Commands, Up: Readline Interaction - -Readline Killing Commands -------------------------- - - "Killing" text means to delete the text from the line, but to save -it away for later use, usually by "yanking" (re-inserting) it back into -the line. (`Cut' and `paste' are more recent jargon for `kill' and -`yank'.) - - If the description for a command says that it `kills' text, then you -can be sure that you can get the text back in a different (or the same) -place later. - - When you use a kill command, the text is saved in a "kill-ring". -Any number of consecutive kills save all of the killed text together, so -that when you yank it back, you get it all. The kill ring is not line -specific; the text that you killed on a previously typed line is -available to be yanked back later, when you are typing another line. - - Here is the list of commands for killing text. - -`C-k' - Kill the text from the current cursor position to the end of the - line. - -`M-d' - Kill from the cursor to the end of the current word, or, if between - words, to the end of the next word. Word boundaries are the same - as those used by `M-f'. - -`M-' - Kill from the cursor the start of the previous word, or, if between - words, to the start of the previous word. Word boundaries are the - same as those used by `M-b'. - -`C-w' - Kill from the cursor to the previous whitespace. This is - different than `M-' because the word boundaries differ. - - Here is how to "yank" the text back into the line. Yanking means to -copy the most-recently-killed text from the kill buffer. - -`C-y' - Yank the most recently killed text back into the buffer at the - cursor. - -`M-y' - Rotate the kill-ring, and yank the new top. You can only do this - if the prior command is `C-y' or `M-y'. - - -File: readline.info, Node: Readline Arguments, Next: Searching, Prev: Readline Killing Commands, Up: Readline Interaction - -Readline Arguments ------------------- - - You can pass numeric arguments to Readline commands. Sometimes the -argument acts as a repeat count, other times it is the sign of the -argument that is significant. If you pass a negative argument to a -command which normally acts in a forward direction, that command will -act in a backward direction. For example, to kill text back to the -start of the line, you might type `M-- C-k'. - - The general way to pass numeric arguments to a command is to type -meta digits before the command. If the first `digit' typed is a minus -sign (`-'), then the sign of the argument will be negative. Once you -have typed one meta digit to get the argument started, you can type the -remainder of the digits, and then the command. For example, to give -the `C-d' command an argument of 10, you could type `M-1 0 C-d', which -will delete the next ten characters on the input line. - - -File: readline.info, Node: Searching, Prev: Readline Arguments, Up: Readline Interaction - -Searching for Commands in the History -------------------------------------- - - Readline provides commands for searching through the command history -for lines containing a specified string. There are two search modes: -"incremental" and "non-incremental". - - Incremental searches begin before the user has finished typing the -search string. As each character of the search string is typed, -Readline displays the next entry from the history matching the string -typed so far. An incremental search requires only as many characters -as needed to find the desired history entry. To search backward in the -history for a particular string, type `C-r'. Typing `C-s' searches -forward through the history. The characters present in the value of -the `isearch-terminators' variable are used to terminate an incremental -search. If that variable has not been assigned a value, the and -`C-J' characters will terminate an incremental search. `C-g' will -abort an incremental search and restore the original line. When the -search is terminated, the history entry containing the search string -becomes the current line. - - To find other matching entries in the history list, type `C-r' or -`C-s' as appropriate. This will search backward or forward in the -history for the next entry matching the search string typed so far. -Any other key sequence bound to a Readline command will terminate the -search and execute that command. For instance, a will terminate -the search and accept the line, thereby executing the command from the -history list. A movement command will terminate the search, make the -last line found the current line, and begin editing. - - Non-incremental searches read the entire search string before -starting to search for matching history lines. The search string may be -typed by the user or be part of the contents of the current line. - - -File: readline.info, Node: Readline Init File, Next: Bindable Readline Commands, Prev: Readline Interaction, Up: Command Line Editing - -Readline Init File -================== - - Although the Readline library comes with a set of Emacs-like -keybindings installed by default, it is possible to use a different set -of keybindings. Any user can customize programs that use Readline by -putting commands in an "inputrc" file, conventionally in his home -directory. The name of this file is taken from the value of the -environment variable `INPUTRC'. If that variable is unset, the default -is `~/.inputrc'. - - When a program which uses the Readline library starts up, the init -file is read, and the key bindings are set. - - In addition, the `C-x C-r' command re-reads this init file, thus -incorporating any changes that you might have made to it. - -* Menu: - -* Readline Init File Syntax:: Syntax for the commands in the inputrc file. - -* Conditional Init Constructs:: Conditional key bindings in the inputrc file. - -* Sample Init File:: An example inputrc file. - - -File: readline.info, Node: Readline Init File Syntax, Next: Conditional Init Constructs, Up: Readline Init File - -Readline Init File Syntax -------------------------- - - There are only a few basic constructs allowed in the Readline init -file. Blank lines are ignored. Lines beginning with a `#' are -comments. Lines beginning with a `$' indicate conditional constructs -(*note Conditional Init Constructs::). Other lines denote variable -settings and key bindings. - -Variable Settings - You can modify the run-time behavior of Readline by altering the - values of variables in Readline using the `set' command within the - init file. Here is how to change from the default Emacs-like key - binding to use `vi' line editing commands: - - set editing-mode vi - - A great deal of run-time behavior is changeable with the following - variables. - - `bell-style' - Controls what happens when Readline wants to ring the - terminal bell. If set to `none', Readline never rings the - bell. If set to `visible', Readline uses a visible bell if - one is available. If set to `audible' (the default), - Readline attempts to ring the terminal's bell. - - `comment-begin' - The string to insert at the beginning of the line when the - `insert-comment' command is executed. The default value is - `"#"'. - - `completion-ignore-case' - If set to `on', Readline performs filename matching and - completion in a case-insensitive fashion. The default value - is `off'. - - `completion-query-items' - The number of possible completions that determines when the - user is asked whether he wants to see the list of - possibilities. If the number of possible completions is - greater than this value, Readline will ask the user whether - or not he wishes to view them; otherwise, they are simply - listed. This variable must be set to an integer value - greater than or equal to 0. The default limit is `100'. - - `convert-meta' - If set to `on', Readline will convert characters with the - eighth bit set to an ASCII key sequence by stripping the - eighth bit and prefixing an character, converting them - to a meta-prefixed key sequence. The default value is `on'. - - `disable-completion' - If set to `On', Readline will inhibit word completion. - Completion characters will be inserted into the line as if - they had been mapped to `self-insert'. The default is `off'. - - `editing-mode' - The `editing-mode' variable controls which default set of key - bindings is used. By default, Readline starts up in Emacs - editing mode, where the keystrokes are most similar to Emacs. - This variable can be set to either `emacs' or `vi'. - - `enable-keypad' - When set to `on', Readline will try to enable the application - keypad when it is called. Some systems need this to enable - the arrow keys. The default is `off'. - - `expand-tilde' - If set to `on', tilde expansion is performed when Readline - attempts word completion. The default is `off'. - - `horizontal-scroll-mode' - This variable can be set to either `on' or `off'. Setting it - to `on' means that the text of the lines being edited will - scroll horizontally on a single screen line when they are - longer than the width of the screen, instead of wrapping onto - a new screen line. By default, this variable is set to `off'. - - `input-meta' - If set to `on', Readline will enable eight-bit input (it will - not clear the eighth bit in the characters it reads), - regardless of what the terminal claims it can support. The - default value is `off'. The name `meta-flag' is a synonym - for this variable. - - `isearch-terminators' - The string of characters that should terminate an incremental - search without subsequently executing the character as a - command (*note Searching::). If this variable has not been - given a value, the characters and `C-J' will terminate - an incremental search. - - `keymap' - Sets Readline's idea of the current keymap for key binding - commands. Acceptable `keymap' names are `emacs', - `emacs-standard', `emacs-meta', `emacs-ctlx', `vi', `vi-move', - `vi-command', and `vi-insert'. `vi' is equivalent to - `vi-command'; `emacs' is equivalent to `emacs-standard'. The - default value is `emacs'. The value of the `editing-mode' - variable also affects the default keymap. - - `mark-directories' - If set to `on', completed directory names have a slash - appended. The default is `on'. - - `mark-modified-lines' - This variable, when set to `on', causes Readline to display an - asterisk (`*') at the start of history lines which have been - modified. This variable is `off' by default. - - `output-meta' - If set to `on', Readline will display characters with the - eighth bit set directly rather than as a meta-prefixed escape - sequence. The default is `off'. - - `print-completions-horizontally' - If set to `on', Readline will display completions with matches - sorted horizontally in alphabetical order, rather than down - the screen. The default is `off'. - - `show-all-if-ambiguous' - This alters the default behavior of the completion functions. - If set to `on', words which have more than one possible - completion cause the matches to be listed immediately instead - of ringing the bell. The default value is `off'. - - `visible-stats' - If set to `on', a character denoting a file's type is - appended to the filename when listing possible completions. - The default is `off'. - -Key Bindings - The syntax for controlling key bindings in the init file is - simple. First you need to find the name of the command that you - want to change. The following sections contain tables of the - command name, the default keybinding, if any, and a short - description of what the command does. - - Once you know the name of the command, simply place on a line in - the init file the name of the key you wish to bind the command to, - a colon, and then the name of the command. The name of the key - can be expressed in different ways, depending on what you find most - comfortable. - - KEYNAME: FUNCTION-NAME or MACRO - KEYNAME is the name of a key spelled out in English. For - example: - Control-u: universal-argument - Meta-Rubout: backward-kill-word - Control-o: "> output" - - In the above example, `C-u' is bound to the function - `universal-argument', `M-DEL' is bound to the function - `backward-kill-word', and `C-o' is bound to run the macro - expressed on the right hand side (that is, to insert the text - `> output' into the line). - - A number of symbolic character names are recognized while - processing this key binding syntax: DEL, ESC, ESCAPE, LFD, - NEWLINE, RET, RETURN, RUBOUT, SPACE, SPC, and TAB. - - "KEYSEQ": FUNCTION-NAME or MACRO - KEYSEQ differs from KEYNAME above in that strings denoting an - entire key sequence can be specified, by placing the key - sequence in double quotes. Some GNU Emacs style key escapes - can be used, as in the following example, but the special - character names are not recognized. - - "\C-u": universal-argument - "\C-x\C-r": re-read-init-file - "\e[11~": "Function Key 1" - - In the above example, `C-u' is again bound to the function - `universal-argument' (just as it was in the first example), - `C-x C-r' is bound to the function `re-read-init-file', and - ` <[> <1> <1> <~>' is bound to insert the text `Function - Key 1'. - - The following GNU Emacs style escape sequences are available when - specifying key sequences: - - `\C-' - control prefix - - `\M-' - meta prefix - - `\e' - an escape character - - `\\' - backslash - - `\"' - <">, a double quotation mark - - `\'' - <'>, a single quote or apostrophe - - In addition to the GNU Emacs style escape sequences, a second set - of backslash escapes is available: - - `\a' - alert (bell) - - `\b' - backspace - - `\d' - delete - - `\f' - form feed - - `\n' - newline - - `\r' - carriage return - - `\t' - horizontal tab - - `\v' - vertical tab - - `\NNN' - the character whose ASCII code is the octal value NNN (one to - three digits) - - `\xNNN' - the character whose ASCII code is the hexadecimal value NNN - (one to three digits) - - When entering the text of a macro, single or double quotes must be - used to indicate a macro definition. Unquoted text is assumed to - be a function name. In the macro body, the backslash escapes - described above are expanded. Backslash will quote any other - character in the macro text, including `"' and `''. For example, - the following binding will make `C-x \' insert a single `\' into - the line: - "\C-x\\": "\\" - - -File: readline.info, Node: Conditional Init Constructs, Next: Sample Init File, Prev: Readline Init File Syntax, Up: Readline Init File - -Conditional Init Constructs ---------------------------- - - Readline implements a facility similar in spirit to the conditional -compilation features of the C preprocessor which allows key bindings -and variable settings to be performed as the result of tests. There -are four parser directives used. - -`$if' - The `$if' construct allows bindings to be made based on the - editing mode, the terminal being used, or the application using - Readline. The text of the test extends to the end of the line; no - characters are required to isolate it. - - `mode' - The `mode=' form of the `$if' directive is used to test - whether Readline is in `emacs' or `vi' mode. This may be - used in conjunction with the `set keymap' command, for - instance, to set bindings in the `emacs-standard' and - `emacs-ctlx' keymaps only if Readline is starting out in - `emacs' mode. - - `term' - The `term=' form may be used to include terminal-specific key - bindings, perhaps to bind the key sequences output by the - terminal's function keys. The word on the right side of the - `=' is tested against both the full name of the terminal and - the portion of the terminal name before the first `-'. This - allows `sun' to match both `sun' and `sun-cmd', for instance. - - `application' - The APPLICATION construct is used to include - application-specific settings. Each program using the - Readline library sets the APPLICATION NAME, and you can test - for it. This could be used to bind key sequences to - functions useful for a specific program. For instance, the - following command adds a key sequence that quotes the current - or previous word in Bash: - $if Bash - # Quote the current or previous word - "\C-xq": "\eb\"\ef\"" - $endif - -`$endif' - This command, as seen in the previous example, terminates an `$if' - command. - -`$else' - Commands in this branch of the `$if' directive are executed if the - test fails. - -`$include' - This directive takes a single filename as an argument and reads - commands and bindings from that file. - $include /etc/inputrc - - -File: readline.info, Node: Sample Init File, Prev: Conditional Init Constructs, Up: Readline Init File - -Sample Init File ----------------- - - Here is an example of an INPUTRC file. This illustrates key -binding, variable assignment, and conditional syntax. - - - # This file controls the behaviour of line input editing for - # programs that use the Gnu Readline library. Existing programs - # include FTP, Bash, and Gdb. - # - # You can re-read the inputrc file with C-x C-r. - # Lines beginning with '#' are comments. - # - # First, include any systemwide bindings and variable assignments from - # /etc/Inputrc - $include /etc/Inputrc - - # - # Set various bindings for emacs mode. - - set editing-mode emacs - - $if mode=emacs - - Meta-Control-h: backward-kill-word Text after the function name is ignored - - # - # Arrow keys in keypad mode - # - #"\M-OD": backward-char - #"\M-OC": forward-char - #"\M-OA": previous-history - #"\M-OB": next-history - # - # Arrow keys in ANSI mode - # - "\M-[D": backward-char - "\M-[C": forward-char - "\M-[A": previous-history - "\M-[B": next-history - # - # Arrow keys in 8 bit keypad mode - # - #"\M-\C-OD": backward-char - #"\M-\C-OC": forward-char - #"\M-\C-OA": previous-history - #"\M-\C-OB": next-history - # - # Arrow keys in 8 bit ANSI mode - # - #"\M-\C-[D": backward-char - #"\M-\C-[C": forward-char - #"\M-\C-[A": previous-history - #"\M-\C-[B": next-history - - C-q: quoted-insert - - $endif - - # An old-style binding. This happens to be the default. - TAB: complete - - # Macros that are convenient for shell interaction - $if Bash - # edit the path - "\C-xp": "PATH=${PATH}\e\C-e\C-a\ef\C-f" - # prepare to type a quoted word -- insert open and close double quotes - # and move to just after the open quote - "\C-x\"": "\"\"\C-b" - # insert a backslash (testing backslash escapes in sequences and macros) - "\C-x\\": "\\" - # Quote the current or previous word - "\C-xq": "\eb\"\ef\"" - # Add a binding to refresh the line, which is unbound - "\C-xr": redraw-current-line - # Edit variable on current line. - "\M-\C-v": "\C-a\C-k$\C-y\M-\C-e\C-a\C-y=" - $endif - - # use a visible bell if one is available - set bell-style visible - - # don't strip characters to 7 bits when reading - set input-meta on - - # allow iso-latin1 characters to be inserted rather than converted to - # prefix-meta sequences - set convert-meta off - - # display characters with the eighth bit set directly rather than - # as meta-prefixed characters - set output-meta on - - # if there are more than 150 possible completions for a word, ask the - # user if he wants to see all of them - set completion-query-items 150 - - # For FTP - $if Ftp - "\C-xg": "get \M-?" - "\C-xt": "put \M-?" - "\M-.": yank-last-arg - $endif - - -File: readline.info, Node: Bindable Readline Commands, Next: Readline vi Mode, Prev: Readline Init File, Up: Command Line Editing - -Bindable Readline Commands -========================== - -* Menu: - -* Commands For Moving:: Moving about the line. -* Commands For History:: Getting at previous lines. -* Commands For Text:: Commands for changing text. -* Commands For Killing:: Commands for killing and yanking. -* Numeric Arguments:: Specifying numeric arguments, repeat counts. -* Commands For Completion:: Getting Readline to do the typing for you. -* Keyboard Macros:: Saving and re-executing typed characters -* Miscellaneous Commands:: Other miscellaneous commands. - - This section describes Readline commands that may be bound to key -sequences. - - Command names without an accompanying key sequence are unbound by -default. In the following descriptions, "point" refers to the current -cursor position, and "mark" refers to a cursor position saved by the -`set-mark' command. The text between the point and mark is referred to -as the "region". - - -File: readline.info, Node: Commands For Moving, Next: Commands For History, Up: Bindable Readline Commands - -Commands For Moving -------------------- - -`beginning-of-line (C-a)' - Move to the start of the current line. - -`end-of-line (C-e)' - Move to the end of the line. - -`forward-char (C-f)' - Move forward a character. - -`backward-char (C-b)' - Move back a character. - -`forward-word (M-f)' - Move forward to the end of the next word. Words are composed of - letters and digits. - -`backward-word (M-b)' - Move back to the start of the current or previous word. Words are - composed of letters and digits. - -`clear-screen (C-l)' - Clear the screen and redraw the current line, leaving the current - line at the top of the screen. - -`redraw-current-line ()' - Refresh the current line. By default, this is unbound. - - -File: readline.info, Node: Commands For History, Next: Commands For Text, Prev: Commands For Moving, Up: Bindable Readline Commands - -Commands For Manipulating The History -------------------------------------- - -`accept-line (Newline or Return)' - Accept the line regardless of where the cursor is. If this line is - non-empty, it may be added to the history list for future recall - with `add_history()'. If this line is a modified history line, - then restore the history line to its original state. - -`previous-history (C-p)' - Move `up' through the history list. - -`next-history (C-n)' - Move `down' through the history list. - -`beginning-of-history (M-<)' - Move to the first line in the history. - -`end-of-history (M->)' - Move to the end of the input history, i.e., the line currently - being entered. - -`reverse-search-history (C-r)' - Search backward starting at the current line and moving `up' - through the history as necessary. This is an incremental search. - -`forward-search-history (C-s)' - Search forward starting at the current line and moving `down' - through the the history as necessary. This is an incremental - search. - -`non-incremental-reverse-search-history (M-p)' - Search backward starting at the current line and moving `up' - through the history as necessary using a non-incremental search - for a string supplied by the user. - -`non-incremental-forward-search-history (M-n)' - Search forward starting at the current line and moving `down' - through the the history as necessary using a non-incremental search - for a string supplied by the user. - -`history-search-forward ()' - Search forward through the history for the string of characters - between the start of the current line and the point. This is a - non-incremental search. By default, this command is unbound. - -`history-search-backward ()' - Search backward through the history for the string of characters - between the start of the current line and the point. This is a - non-incremental search. By default, this command is unbound. - -`yank-nth-arg (M-C-y)' - Insert the first argument to the previous command (usually the - second word on the previous line). With an argument N, insert the - Nth word from the previous command (the words in the previous - command begin with word 0). A negative argument inserts the Nth - word from the end of the previous command. - -`yank-last-arg (M-. or M-_)' - Insert last argument to the previous command (the last word of the - previous history entry). With an argument, behave exactly like - `yank-nth-arg'. Successive calls to `yank-last-arg' move back - through the history list, inserting the last argument of each line - in turn. - - -File: readline.info, Node: Commands For Text, Next: Commands For Killing, Prev: Commands For History, Up: Bindable Readline Commands - -Commands For Changing Text --------------------------- - -`delete-char (C-d)' - Delete the character under the cursor. If the cursor is at the - beginning of the line, there are no characters in the line, and - the last character typed was not bound to `delete-char', then - return EOF. - -`backward-delete-char (Rubout)' - Delete the character behind the cursor. A numeric argument means - to kill the characters instead of deleting them. - -`forward-backward-delete-char ()' - Delete the character under the cursor, unless the cursor is at the - end of the line, in which case the character behind the cursor is - deleted. By default, this is not bound to a key. - -`quoted-insert (C-q or C-v)' - Add the next character typed to the line verbatim. This is how to - insert key sequences like `C-q', for example. - -`tab-insert (M-)' - Insert a tab character. - -`self-insert (a, b, A, 1, !, ...)' - Insert yourself. - -`transpose-chars (C-t)' - Drag the character before the cursor forward over the character at - the cursor, moving the cursor forward as well. If the insertion - point is at the end of the line, then this transposes the last two - characters of the line. Negative arguments have no effect. - -`transpose-words (M-t)' - Drag the word before point past the word after point, moving point - past that word as well. - -`upcase-word (M-u)' - Uppercase the current (or following) word. With a negative - argument, uppercase the previous word, but do not move the cursor. - -`downcase-word (M-l)' - Lowercase the current (or following) word. With a negative - argument, lowercase the previous word, but do not move the cursor. - -`capitalize-word (M-c)' - Capitalize the current (or following) word. With a negative - argument, capitalize the previous word, but do not move the cursor. - - -File: readline.info, Node: Commands For Killing, Next: Numeric Arguments, Prev: Commands For Text, Up: Bindable Readline Commands - -Killing And Yanking -------------------- - -`kill-line (C-k)' - Kill the text from point to the end of the line. - -`backward-kill-line (C-x Rubout)' - Kill backward to the beginning of the line. - -`unix-line-discard (C-u)' - Kill backward from the cursor to the beginning of the current line. - -`kill-whole-line ()' - Kill all characters on the current line, no matter point is. By - default, this is unbound. - -`kill-word (M-d)' - Kill from point to the end of the current word, or if between - words, to the end of the next word. Word boundaries are the same - as `forward-word'. - -`backward-kill-word (M-)' - Kill the word behind point. Word boundaries are the same as - `backward-word'. - -`unix-word-rubout (C-w)' - Kill the word behind point, using white space as a word boundary. - The killed text is saved on the kill-ring. - -`delete-horizontal-space ()' - Delete all spaces and tabs around point. By default, this is - unbound. - -`kill-region ()' - Kill the text in the current region. By default, this command is - unbound. - -`copy-region-as-kill ()' - Copy the text in the region to the kill buffer, so it can be yanked - right away. By default, this command is unbound. - -`copy-backward-word ()' - Copy the word before point to the kill buffer. The word - boundaries are the same as `backward-word'. By default, this - command is unbound. - -`copy-forward-word ()' - Copy the word following point to the kill buffer. The word - boundaries are the same as `forward-word'. By default, this - command is unbound. - -`yank (C-y)' - Yank the top of the kill ring into the buffer at the current - cursor position. - -`yank-pop (M-y)' - Rotate the kill-ring, and yank the new top. You can only do this - if the prior command is `yank' or `yank-pop'. - - -File: readline.info, Node: Numeric Arguments, Next: Commands For Completion, Prev: Commands For Killing, Up: Bindable Readline Commands - -Specifying Numeric Arguments ----------------------------- - -`digit-argument (M-0, M-1, ... M--)' - Add this digit to the argument already accumulating, or start a new - argument. `M--' starts a negative argument. - -`universal-argument ()' - This is another way to specify an argument. If this command is - followed by one or more digits, optionally with a leading minus - sign, those digits define the argument. If the command is - followed by digits, executing `universal-argument' again ends the - numeric argument, but is otherwise ignored. As a special case, if - this command is immediately followed by a character that is - neither a digit or minus sign, the argument count for the next - command is multiplied by four. The argument count is initially - one, so executing this function the first time makes the argument - count four, a second time makes the argument count sixteen, and so - on. By default, this is not bound to a key. - - -File: readline.info, Node: Commands For Completion, Next: Keyboard Macros, Prev: Numeric Arguments, Up: Bindable Readline Commands - -Letting Readline Type For You ------------------------------ - -`complete ()' - Attempt to perform completion on the text before point. The - actual completion performed is application-specific. The default - is filename completion. - -`possible-completions (M-?)' - List the possible completions of the text before the cursor. - -`insert-completions (M-*)' - Insert all completions of the text before point that would have - been generated by `possible-completions'. - -`menu-complete ()' - Similar to `complete', but replaces the word to be completed with - a single match from the list of possible completions. Repeated - execution of `menu-complete' steps through the list of possible - completions, inserting each match in turn. At the end of the list - of completions, the bell is rung and the original text is restored. - An argument of N moves N positions forward in the list of matches; - a negative argument may be used to move backward through the list. - This command is intended to be bound to , but is unbound by - default. - -`delete-char-or-list ()' - Deletes the character under the cursor if not at the beginning or - end of the line (like `delete-char'). If at the end of the line, - behaves identically to `possible-completions'. This command is - unbound by default. - - -File: readline.info, Node: Keyboard Macros, Next: Miscellaneous Commands, Prev: Commands For Completion, Up: Bindable Readline Commands - -Keyboard Macros ---------------- - -`start-kbd-macro (C-x ()' - Begin saving the characters typed into the current keyboard macro. - -`end-kbd-macro (C-x ))' - Stop saving the characters typed into the current keyboard macro - and save the definition. - -`call-last-kbd-macro (C-x e)' - Re-execute the last keyboard macro defined, by making the - characters in the macro appear as if typed at the keyboard. - - -File: readline.info, Node: Miscellaneous Commands, Prev: Keyboard Macros, Up: Bindable Readline Commands - -Some Miscellaneous Commands ---------------------------- - -`re-read-init-file (C-x C-r)' - Read in the contents of the INPUTRC file, and incorporate any - bindings or variable assignments found there. - -`abort (C-g)' - Abort the current editing command and ring the terminal's bell - (subject to the setting of `bell-style'). - -`do-uppercase-version (M-a, M-b, M-X, ...)' - If the metafied character X is lowercase, run the command that is - bound to the corresponding uppercase character. - -`prefix-meta ()' - Make the next character typed be metafied. This is for keyboards - without a meta key. Typing ` f' is equivalent to typing - `M-f'. - -`undo (C-_ or C-x C-u)' - Incremental undo, separately remembered for each line. - -`revert-line (M-r)' - Undo all changes made to this line. This is like executing the - `undo' command enough times to get back to the beginning. - -`tilde-expand (M-~)' - Perform tilde expansion on the current word. - -`set-mark (C-@)' - Set the mark to the current point. If a numeric argument is - supplied, the mark is set to that position. - -`exchange-point-and-mark (C-x C-x)' - Swap the point with the mark. The current cursor position is set - to the saved position, and the old cursor position is saved as the - mark. - -`character-search (C-])' - A character is read and point is moved to the next occurrence of - that character. A negative count searches for previous - occurrences. - -`character-search-backward (M-C-])' - A character is read and point is moved to the previous occurrence - of that character. A negative count searches for subsequent - occurrences. - -`insert-comment (M-#)' - The value of the `comment-begin' variable is inserted at the - beginning of the current line, and the line is accepted as if a - newline had been typed. - -`dump-functions ()' - Print all of the functions and their key bindings to the Readline - output stream. If a numeric argument is supplied, the output is - formatted in such a way that it can be made part of an INPUTRC - file. This command is unbound by default. - -`dump-variables ()' - Print all of the settable variables and their values to the - Readline output stream. If a numeric argument is supplied, the - output is formatted in such a way that it can be made part of an - INPUTRC file. This command is unbound by default. - -`dump-macros ()' - Print all of the Readline key sequences bound to macros and the - strings they output. If a numeric argument is supplied, the - output is formatted in such a way that it can be made part of an - INPUTRC file. This command is unbound by default. - - -File: readline.info, Node: Readline vi Mode, Prev: Bindable Readline Commands, Up: Command Line Editing - -Readline vi Mode -================ - - While the Readline library does not have a full set of `vi' editing -functions, it does contain enough to allow simple editing of the line. -The Readline `vi' mode behaves as specified in the POSIX 1003.2 -standard. - - In order to switch interactively between `emacs' and `vi' editing -modes, use the command `M-C-j' (toggle-editing-mode). The Readline -default is `emacs' mode. - - When you enter a line in `vi' mode, you are already placed in -`insertion' mode, as if you had typed an `i'. Pressing switches -you into `command' mode, where you can edit the text of the line with -the standard `vi' movement keys, move to previous history lines with -`k' and subsequent lines with `j', and so forth. - - This document describes the GNU Readline Library, a utility for -aiding in the consitency of user interface across discrete programs -that need to provide a command line interface. - - Copyright (C) 1988-2001 Free Software Foundation, Inc. - - Permission is granted to make and distribute verbatim copies of this -manual provided the copyright notice and this permission notice pare -preserved on all copies. - - Permission is granted to copy and distribute modified versions of -this manual under the conditions for verbatim copying, provided that -the entire resulting derived work is distributed under the terms of a -permission notice identical to this one. - - Permission is granted to copy and distribute translations of this -manual into another language, under the above conditions for modified -versions, except that this permission notice may be stated in a -translation approved by the Foundation. - - -File: readline.info, Node: Programming with GNU Readline, Next: Concept Index, Prev: Command Line Editing, Up: Top - -Programming with GNU Readline -***************************** - - This chapter describes the interface between the GNU Readline -Library and other programs. If you are a programmer, and you wish to -include the features found in GNU Readline such as completion, line -editing, and interactive history manipulation in your own programs, -this section is for you. - -* Menu: - -* Basic Behavior:: Using the default behavior of Readline. -* Custom Functions:: Adding your own functions to Readline. -* Readline Variables:: Variables accessible to custom - functions. -* Readline Convenience Functions:: Functions which Readline supplies to - aid in writing your own custom - functions. -* Readline Signal Handling:: How Readline behaves when it receives signals. -* Custom Completers:: Supplanting or supplementing Readline's - completion functions. - - -File: readline.info, Node: Basic Behavior, Next: Custom Functions, Up: Programming with GNU Readline - -Basic Behavior -============== - - Many programs provide a command line interface, such as `mail', -`ftp', and `sh'. For such programs, the default behaviour of Readline -is sufficient. This section describes how to use Readline in the -simplest way possible, perhaps to replace calls in your code to -`gets()' or `fgets()'. - - `char *readline (const char *PROMPT);' - - The function `readline()' prints a prompt PROMPT and then reads and -returns a single line of text from the user. If PROMPT is `NULL' or -the empty string, no prompt is displayed. The line `readline' returns -is allocated with `malloc()'; the caller should `free()' the line when -it has finished with it. The declaration for `readline' in ANSI C is - -So, one might say - `char *line = readline ("Enter a line: ");' - -in order to read a line of text from the user. The line returned has -the final newline removed, so only the text remains. - - If `readline' encounters an `EOF' while reading the line, and the -line is empty at that point, then `(char *)NULL' is returned. -Otherwise, the line is ended just as if a newline had been typed. - - If you want the user to be able to get at the line later, (with - for example), you must call `add_history()' to save the line away -in a "history" list of such lines. - - `add_history (line)'; - -For full details on the GNU History Library, see the associated manual. - - It is preferable to avoid saving empty lines on the history list, -since users rarely have a burning need to reuse a blank line. Here is -a function which usefully replaces the standard `gets()' library -function, and has the advantage of no static buffer to overflow: - - /* A static variable for holding the line. */ - static char *line_read = (char *)NULL; - - /* Read a string, and return a pointer to it. Returns NULL on EOF. */ - char * - rl_gets () - { - /* If the buffer has already been allocated, return the memory - to the free pool. */ - if (line_read) - { - free (line_read); - line_read = (char *)NULL; - } - - /* Get a line from the user. */ - line_read = readline (""); - - /* If the line has any text in it, save it on the history. */ - if (line_read && *line_read) - add_history (line_read); - - return (line_read); - } - - This function gives the user the default behaviour of -completion: completion on file names. If you do not want Readline to -complete on filenames, you can change the binding of the key with -`rl_bind_key()'. - - `int rl_bind_key (int KEY, rl_command_func_t *FUNCTION);' - - `rl_bind_key()' takes two arguments: KEY is the character that you -want to bind, and FUNCTION is the address of the function to call when -KEY is pressed. Binding to `rl_insert()' makes insert -itself. `rl_bind_key()' returns non-zero if KEY is not a valid ASCII -character code (between 0 and 255). - - Thus, to disable the default behavior, the following suffices: - `rl_bind_key ('\t', rl_insert);' - - This code should be executed once at the start of your program; you -might write a function called `initialize_readline()' which performs -this and other desired initializations, such as installing custom -completers (*note Custom Completers::). - - -File: readline.info, Node: Custom Functions, Next: Readline Variables, Prev: Basic Behavior, Up: Programming with GNU Readline - -Custom Functions -================ - - Readline provides many functions for manipulating the text of the -line, but it isn't possible to anticipate the needs of all programs. -This section describes the various functions and variables defined -within the Readline library which allow a user program to add -customized functionality to Readline. - - Before declaring any functions that customize Readline's behavior, or -using any functionality Readline provides in other code, an application -writer should include the file `' in any file that -uses Readline's features. Since some of the definitions in -`readline.h' use the `stdio' library, the file `' should be -included before `readline.h'. - -* Menu: - -* Readline Typedefs:: C declarations to make code readable. -* Function Writing:: Variables and calling conventions. - - -File: readline.info, Node: Readline Typedefs, Next: Function Writing, Up: Custom Functions - -Readline Typedefs ------------------ - - For readabilty, we declare a number of new object types, all pointers -to functions. - - The reason for declaring these new types is to make it easier to -write code describing pointers to C functions with appropriately -prototyped arguments and return values. - - For instance, say we want to declare a variable FUNC as a pointer to -a function which takes two `int' arguments and returns an `int' (this -is the type of all of the Readline bindable functions). Instead of the -classic C declaration - - `int (*func)();' - -or the ANSI-C style declaration - - `int (*func)(int, int);' - -we may write - - `rl_command_func_t *func;' - - The full list of function pointer types available is - -`typedef int rl_command_func_t (int, int);' - -`typedef char *rl_compentry_func_t (const char *, int);' - -`typedef char **rl_completion_func_t (const char *, int, int);' - -`typedef char *rl_quote_func_t (char *, int, char *);' - -`typedef char *rl_dequote_func_t (char *, int);' - -`typedef int rl_compignore_func_t (char **);' - -`typedef void rl_compdisp_func_t (char **, int, int);' - -`typedef int rl_hook_func_t (void);' - -`typedef int rl_getc_func_t (FILE *);' - -`typedef int rl_linebuf_func_t (char *, int);' - -`typedef int rl_intfunc_t (int);' - -`#define rl_ivoidfunc_t rl_hook_func_t' - -`typedef int rl_icpfunc_t (char *);' - -`typedef int rl_icppfunc_t (char **);' - -`typedef void rl_voidfunc_t (void);' - -`typedef void rl_vintfunc_t (int);' - -`typedef void rl_vcpfunc_t (char *);' - -`typedef void rl_vcppfunc_t (char **);' - -File: readline.info, Node: Function Writing, Prev: Readline Typedefs, Up: Custom Functions - -Writing a New Function ----------------------- - - In order to write new functions for Readline, you need to know the -calling conventions for keyboard-invoked functions, and the names of the -variables that describe the current state of the line read so far. - - The calling sequence for a command `foo' looks like - - `foo (int count, int key)' - -where COUNT is the numeric argument (or 1 if defaulted) and KEY is the -key that invoked this function. - - It is completely up to the function as to what should be done with -the numeric argument. Some functions use it as a repeat count, some as -a flag, and others to choose alternate behavior (refreshing the current -line as opposed to refreshing the screen, for example). Some choose to -ignore it. In general, if a function uses the numeric argument as a -repeat count, it should be able to do something useful with both -negative and positive arguments. At the very least, it should be aware -that it can be passed a negative argument. - - -File: readline.info, Node: Readline Variables, Next: Readline Convenience Functions, Prev: Custom Functions, Up: Programming with GNU Readline - -Readline Variables -================== - - These variables are available to function writers. - - - Variable: char * rl_line_buffer - This is the line gathered so far. You are welcome to modify the - contents of the line, but see *Note Allowing Undoing::. The - function `rl_extend_line_buffer' is available to increase the - memory allocated to `rl_line_buffer'. - - - Variable: int rl_point - The offset of the current cursor position in `rl_line_buffer' (the - _point_). - - - Variable: int rl_end - The number of characters present in `rl_line_buffer'. When - `rl_point' is at the end of the line, `rl_point' and `rl_end' are - equal. - - - Variable: int rl_mark - The MARK (saved position) in the current line. If set, the mark - and point define a _region_. - - - Variable: int rl_done - Setting this to a non-zero value causes Readline to return the - current line immediately. - - - Variable: int rl_num_chars_to_read - Setting this to a positive value before calling `readline()' causes - Readline to return after accepting that many characters, rather - than reading up to a character bound to `accept-line'. - - - Variable: int rl_pending_input - Setting this to a value makes it the next keystroke read. This is - a way to stuff a single character into the input stream. - - - Variable: int rl_dispatching - Set to a non-zero value if a function is being called from a key - binding; zero otherwise. Application functions can test this to - discover whether they were called directly or by Readline's - dispatching mechanism. - - - Variable: int rl_erase_empty_line - Setting this to a non-zero value causes Readline to completely - erase the current line, including any prompt, any time a newline - is typed as the only character on an otherwise-empty line. The - cursor is moved to the beginning of the newly-blank line. - - - Variable: char * rl_prompt - The prompt Readline uses. This is set from the argument to - `readline()', and should not be assigned to directly. - - - Variable: int rl_already_prompted - If an application wishes to display the prompt itself, rather than - have Readline do it the first time `readline()' is called, it - should set this variable to a non-zero value after displaying the - prompt. The prompt must also be passed as the argument to - `readline()' so the redisplay functions can update the display - properly. The calling application is responsible for managing the - value; Readline never sets it. - - - Variable: const char * rl_library_version - The version number of this revision of the library. - - - Variable: int rl_gnu_readline_p - Always set to 1, denoting that this is GNU readline rather than - some emulation. - - - Variable: const char * rl_terminal_name - The terminal type, used for initialization. If not set by the - application, Readline sets this to the value of the `TERM' - environment variable the first time it is called. - - - Variable: const char * rl_readline_name - This variable is set to a unique name by each application using - Readline. The value allows conditional parsing of the inputrc file - (*note Conditional Init Constructs::). - - - Variable: FILE * rl_instream - The stdio stream from which Readline reads input. - - - Variable: FILE * rl_outstream - The stdio stream to which Readline performs output. - - - Variable: rl_command_func_t * rl_last_func - The address of the last command function Readline executed. May - be used to test whether or not a function is being executed twice - in succession, for example. - - - Variable: rl_hook_func_t * rl_startup_hook - If non-zero, this is the address of a function to call just before - `readline' prints the first prompt. - - - Variable: rl_hook_func_t * rl_pre_input_hook - If non-zero, this is the address of a function to call after the - first prompt has been printed and just before `readline' starts - reading input characters. - - - Variable: rl_hook_func_t * rl_event_hook - If non-zero, this is the address of a function to call periodically - when readline is waiting for terminal input. - - - Variable: rl_getc_func_t * rl_getc_function - If non-zero, `readline' will call indirectly through this pointer - to get a character from the input stream. By default, it is set to - `rl_getc', the default `readline' character input function (*note - Character Input::). - - - Variable: rl_voidfunc_t * rl_redisplay_function - If non-zero, `readline' will call indirectly through this pointer - to update the display with the current contents of the editing - buffer. By default, it is set to `rl_redisplay', the default - `readline' redisplay function (*note Redisplay::). - - - Variable: rl_vintfunc_t * rl_prep_term_function - If non-zero, `readline' will call indirectly through this pointer - to initialize the terminal. The function takes a single argument, - an `int' flag that says whether or not to use eight-bit characters. - By default, this is set to `rl_prep_terminal' (*note Terminal - Management::). - - - Variable: rl_voidfunc_t * rl_deprep_term_function - If non-zero, `readline' will call indirectly through this pointer - to reset the terminal. This function should undo the effects of - `rl_prep_term_function'. By default, this is set to - `rl_deprep_terminal' (*note Terminal Management::). - - - Variable: Keymap rl_executing_keymap - This variable is set to the keymap (*note Keymaps::) in which the - currently executing readline function was found. - - - Variable: Keymap rl_binding_keymap - This variable is set to the keymap (*note Keymaps::) in which the - last key binding occurred. - - - Variable: char * rl_executing_macro - This variable is set to the text of any currently-executing macro. - - - Variable: int rl_readline_state - A variable with bit values that encapsulate the current Readline - state. A bit is set with the `RL_SETSTATE' macro, and unset with - the `RL_UNSETSTATE' macro. Use the `RL_ISSTATE' macro to test - whether a particular state bit is set. Current state bits include: - - `RL_STATE_NONE' - Readline has not yet been called, nor has it begun to - intialize. - - `RL_STATE_INITIALIZING' - Readline is initializing its internal data structures. - - `RL_STATE_INITIALIZED' - Readline has completed its initialization. - - `RL_STATE_TERMPREPPED' - Readline has modified the terminal modes to do its own input - and redisplay. - - `RL_STATE_READCMD' - Readline is reading a command from the keyboard. - - `RL_STATE_METANEXT' - Readline is reading more input after reading the meta-prefix - character. - - `RL_STATE_DISPATCHING' - Readline is dispatching to a command. - - `RL_STATE_MOREINPUT' - Readline is reading more input while executing an editing - command. - - `RL_STATE_ISEARCH' - Readline is performing an incremental history search. - - `RL_STATE_NSEARCH' - Readline is performing a non-incremental history search. - - `RL_STATE_SEARCH' - Readline is searching backward or forward through the history - for a string. - - `RL_STATE_NUMERICARG' - Readline is reading a numeric argument. - - `RL_STATE_MACROINPUT' - Readline is currently getting its input from a - previously-defined keyboard macro. - - `RL_STATE_MACRODEF' - Readline is currently reading characters defining a keyboard - macro. - - `RL_STATE_OVERWRITE' - Readline is in overwrite mode. - - `RL_STATE_COMPLETING' - Readline is performing word completion. - - `RL_STATE_SIGHANDLER' - Readline is currently executing the readline signal handler. - - `RL_STATE_UNDOING' - Readline is performing an undo. - - `RL_STATE_DONE' - Readline has read a key sequence bound to `accept-line' and - is about to return the line to the caller. - - - - Variable: int rl_explicit_arg - Set to a non-zero value if an explicit numeric argument was - specified by the user. Only valid in a bindable command function. - - - Variable: int rl_numeric_arg - Set to the value of any numeric argument explicitly specified by - the user before executing the current Readline function. Only - valid in a bindable command function. - - - Variable: int rl_editing_mode - Set to a value denoting Readline's current editing mode. A value - of EMACS_MODE means Readline is currently in emacs mode; VI_MODE - means that vi mode is active. - - -File: readline.info, Node: Readline Convenience Functions, Next: Readline Signal Handling, Prev: Readline Variables, Up: Programming with GNU Readline - -Readline Convenience Functions -============================== - -* Menu: - -* Function Naming:: How to give a function you write a name. -* Keymaps:: Making keymaps. -* Binding Keys:: Changing Keymaps. -* Associating Function Names and Bindings:: Translate function names to - key sequences. -* Allowing Undoing:: How to make your functions undoable. -* Redisplay:: Functions to control line display. -* Modifying Text:: Functions to modify `rl_line_buffer'. -* Character Input:: Functions to read keyboard input. -* Terminal Management:: Functions to manage terminal settings. -* Utility Functions:: Generally useful functions and hooks. -* Alternate Interface:: Using Readline in a `callback' fashion. - - -File: readline.info, Node: Function Naming, Next: Keymaps, Up: Readline Convenience Functions - -Naming a Function ------------------ - - The user can dynamically change the bindings of keys while using -Readline. This is done by representing the function with a descriptive -name. The user is able to type the descriptive name when referring to -the function. Thus, in an init file, one might find - - Meta-Rubout: backward-kill-word - - This binds the keystroke to the function -_descriptively_ named `backward-kill-word'. You, as the programmer, -should bind the functions you write to descriptive names as well. -Readline provides a function for doing that: - - - Function: int rl_add_defun (const char *name, rl_command_func_t - *function, int key) - Add NAME to the list of named functions. Make FUNCTION be the - function that gets called. If KEY is not -1, then bind it to - FUNCTION using `rl_bind_key()'. - - Using this function alone is sufficient for most applications. It is -the recommended way to add a few functions to the default functions that -Readline has built in. If you need to do something other than adding a -function to Readline, you may need to use the underlying functions -described below. - - -File: readline.info, Node: Keymaps, Next: Binding Keys, Prev: Function Naming, Up: Readline Convenience Functions - -Selecting a Keymap ------------------- - - Key bindings take place on a "keymap". The keymap is the -association between the keys that the user types and the functions that -get run. You can make your own keymaps, copy existing keymaps, and tell -Readline which keymap to use. - - - Function: Keymap rl_make_bare_keymap (void) - Returns a new, empty keymap. The space for the keymap is - allocated with `malloc()'; the caller should free it by calling - `rl_discard_keymap()' when done. - - - Function: Keymap rl_copy_keymap (Keymap map) - Return a new keymap which is a copy of MAP. - - - Function: Keymap rl_make_keymap (void) - Return a new keymap with the printing characters bound to - rl_insert, the lowercase Meta characters bound to run their - equivalents, and the Meta digits bound to produce numeric - arguments. - - - Function: void rl_discard_keymap (Keymap keymap) - Free the storage associated with KEYMAP. - - Readline has several internal keymaps. These functions allow you to -change which keymap is active. - - - Function: Keymap rl_get_keymap (void) - Returns the currently active keymap. - - - Function: void rl_set_keymap (Keymap keymap) - Makes KEYMAP the currently active keymap. - - - Function: Keymap rl_get_keymap_by_name (const char *name) - Return the keymap matching NAME. NAME is one which would be - supplied in a `set keymap' inputrc line (*note Readline Init - File::). - - - Function: char * rl_get_keymap_name (Keymap keymap) - Return the name matching KEYMAP. NAME is one which would be - supplied in a `set keymap' inputrc line (*note Readline Init - File::). - - -File: readline.info, Node: Binding Keys, Next: Associating Function Names and Bindings, Prev: Keymaps, Up: Readline Convenience Functions - -Binding Keys ------------- - - Key sequences are associate with functions through the keymap. -Readline has several internal keymaps: `emacs_standard_keymap', -`emacs_meta_keymap', `emacs_ctlx_keymap', `vi_movement_keymap', and -`vi_insertion_keymap'. `emacs_standard_keymap' is the default, and the -examples in this manual assume that. - - Since `readline()' installs a set of default key bindings the first -time it is called, there is always the danger that a custom binding -installed before the first call to `readline()' will be overridden. An -alternate mechanism is to install custom key bindings in an -initialization function assigned to the `rl_startup_hook' variable -(*note Readline Variables::). - - These functions manage key bindings. - - - Function: int rl_bind_key (int key, rl_command_func_t *function) - Binds KEY to FUNCTION in the currently active keymap. Returns - non-zero in the case of an invalid KEY. - - - Function: int rl_bind_key_in_map (int key, rl_command_func_t - *function, Keymap map) - Bind KEY to FUNCTION in MAP. Returns non-zero in the case of an - invalid KEY. - - - Function: int rl_unbind_key (int key) - Bind KEY to the null function in the currently active keymap. - Returns non-zero in case of error. - - - Function: int rl_unbind_key_in_map (int key, Keymap map) - Bind KEY to the null function in MAP. Returns non-zero in case of - error. - - - Function: int rl_unbind_function_in_map (rl_command_func_t - *function, Keymap map) - Unbind all keys that execute FUNCTION in MAP. - - - Function: int rl_unbind_command_in_map (const char *command, Keymap - map) - Unbind all keys that are bound to COMMAND in MAP. - - - Function: int rl_set_key (const char *keyseq, rl_command_func_t - *function, Keymap map) - Bind the key sequence represented by the string KEYSEQ to the - function FUNCTION. This makes new keymaps as necessary. The - initial keymap in which to do bindings is MAP. - - - Function: int rl_generic_bind (int type, const char *keyseq, char - *data, Keymap map) - Bind the key sequence represented by the string KEYSEQ to the - arbitrary pointer DATA. TYPE says what kind of data is pointed to - by DATA; this can be a function (`ISFUNC'), a macro (`ISMACR'), or - a keymap (`ISKMAP'). This makes new keymaps as necessary. The - initial keymap in which to do bindings is MAP. - - - Function: int rl_parse_and_bind (char *line) - Parse LINE as if it had been read from the `inputrc' file and - perform any key bindings and variable assignments found (*note - Readline Init File::). - - - Function: int rl_read_init_file (const char *filename) - Read keybindings and variable assignments from FILENAME (*note - Readline Init File::). - - -File: readline.info, Node: Associating Function Names and Bindings, Next: Allowing Undoing, Prev: Binding Keys, Up: Readline Convenience Functions - -Associating Function Names and Bindings ---------------------------------------- - - These functions allow you to find out what keys invoke named -functions and the functions invoked by a particular key sequence. You -may also associate a new function name with an arbitrary function. - - - Function: rl_command_func_t * rl_named_function (const char *name) - Return the function with name NAME. - - - Function: rl_command_func_t * rl_function_of_keyseq (const char - *keyseq, Keymap map, int *type) - Return the function invoked by KEYSEQ in keymap MAP. If MAP is - `NULL', the current keymap is used. If TYPE is not `NULL', the - type of the object is returned in the `int' variable it points to - (one of `ISFUNC', `ISKMAP', or `ISMACR'). - - - Function: char ** rl_invoking_keyseqs (rl_command_func_t *function) - Return an array of strings representing the key sequences used to - invoke FUNCTION in the current keymap. - - - Function: char ** rl_invoking_keyseqs_in_map (rl_command_func_t - *function, Keymap map) - Return an array of strings representing the key sequences used to - invoke FUNCTION in the keymap MAP. - - - Function: void rl_function_dumper (int readable) - Print the readline function names and the key sequences currently - bound to them to `rl_outstream'. If READABLE is non-zero, the - list is formatted in such a way that it can be made part of an - `inputrc' file and re-read. - - - Function: void rl_list_funmap_names (void) - Print the names of all bindable Readline functions to - `rl_outstream'. - - - Function: const char ** rl_funmap_names (void) - Return a NULL terminated array of known function names. The array - is sorted. The array itself is allocated, but not the strings - inside. You should `free()' the array when you are done, but not - the pointers. - - - Function: int rl_add_funmap_entry (const char *name, - rl_command_func_t *function) - Add NAME to the list of bindable Readline command names, and make - FUNCTION the function to be called when NAME is invoked. - - -File: readline.info, Node: Allowing Undoing, Next: Redisplay, Prev: Associating Function Names and Bindings, Up: Readline Convenience Functions - -Allowing Undoing ----------------- - - Supporting the undo command is a painless thing, and makes your -functions much more useful. It is certainly easy to try something if -you know you can undo it. - - If your function simply inserts text once, or deletes text once, and -uses `rl_insert_text()' or `rl_delete_text()' to do it, then undoing is -already done for you automatically. - - If you do multiple insertions or multiple deletions, or any -combination of these operations, you should group them together into -one operation. This is done with `rl_begin_undo_group()' and -`rl_end_undo_group()'. - - The types of events that can be undone are: - - enum undo_code { UNDO_DELETE, UNDO_INSERT, UNDO_BEGIN, UNDO_END }; - - Notice that `UNDO_DELETE' means to insert some text, and -`UNDO_INSERT' means to delete some text. That is, the undo code tells -what to undo, not how to undo it. `UNDO_BEGIN' and `UNDO_END' are tags -added by `rl_begin_undo_group()' and `rl_end_undo_group()'. - - - Function: int rl_begin_undo_group (void) - Begins saving undo information in a group construct. The undo - information usually comes from calls to `rl_insert_text()' and - `rl_delete_text()', but could be the result of calls to - `rl_add_undo()'. - - - Function: int rl_end_undo_group (void) - Closes the current undo group started with `rl_begin_undo_group - ()'. There should be one call to `rl_end_undo_group()' for each - call to `rl_begin_undo_group()'. - - - Function: void rl_add_undo (enum undo_code what, int start, int end, - char *text) - Remember how to undo an event (according to WHAT). The affected - text runs from START to END, and encompasses TEXT. - - - Function: void rl_free_undo_list (void) - Free the existing undo list. - - - Function: int rl_do_undo (void) - Undo the first thing on the undo list. Returns `0' if there was - nothing to undo, non-zero if something was undone. - - Finally, if you neither insert nor delete text, but directly modify -the existing text (e.g., change its case), call `rl_modifying()' once, -just before you modify the text. You must supply the indices of the -text range that you are going to modify. - - - Function: int rl_modifying (int start, int end) - Tell Readline to save the text between START and END as a single - undo unit. It is assumed that you will subsequently modify that - text. - - -File: readline.info, Node: Redisplay, Next: Modifying Text, Prev: Allowing Undoing, Up: Readline Convenience Functions - -Redisplay ---------- - - - Function: void rl_redisplay (void) - Change what's displayed on the screen to reflect the current - contents of `rl_line_buffer'. - - - Function: int rl_forced_update_display (void) - Force the line to be updated and redisplayed, whether or not - Readline thinks the screen display is correct. - - - Function: int rl_on_new_line (void) - Tell the update functions that we have moved onto a new (empty) - line, usually after ouputting a newline. - - - Function: int rl_on_new_line_with_prompt (void) - Tell the update functions that we have moved onto a new line, with - RL_PROMPT already displayed. This could be used by applications - that want to output the prompt string themselves, but still need - Readline to know the prompt string length for redisplay. It - should be used after setting RL_ALREADY_PROMPTED. - - - Function: int rl_reset_line_state (void) - Reset the display state to a clean state and redisplay the current - line starting on a new line. - - - Function: int rl_crlf (void) - Move the cursor to the start of the next screen line. - - - Function: int rl_message (const char *, ...) - The arguments are a format string as would be supplied to `printf', - possibly containing conversion specifications such as `%d', and - any additional arguments necessary to satisfy the conversion - specifications. The resulting string is displayed in the "echo - area". The echo area is also used to display numeric arguments - and search strings. - - - Function: int rl_clear_message (void) - Clear the message in the echo area. - - - Function: void rl_save_prompt (void) - Save the local Readline prompt display state in preparation for - displaying a new message in the message area with `rl_message()'. - - - Function: void rl_restore_prompt (void) - Restore the local Readline prompt display state saved by the most - recent call to `rl_save_prompt'. - - - Function: int rl_expand_prompt (char *prompt) - Expand any special character sequences in PROMPT and set up the - local Readline prompt redisplay variables. This function is - called by `readline()'. It may also be called to expand the - primary prompt if the `rl_on_new_line_with_prompt()' function or - `rl_already_prompted' variable is used. It returns the number of - visible characters on the last line of the (possibly multi-line) - prompt. - - -File: readline.info, Node: Modifying Text, Next: Character Input, Prev: Redisplay, Up: Readline Convenience Functions - -Modifying Text --------------- - - - Function: int rl_insert_text (const char *text) - Insert TEXT into the line at the current cursor position. - - - Function: int rl_delete_text (int start, int end) - Delete the text between START and END in the current line. - - - Function: char * rl_copy_text (int start, int end) - Return a copy of the text between START and END in the current - line. - - - Function: int rl_kill_text (int start, int end) - Copy the text between START and END in the current line to the - kill ring, appending or prepending to the last kill if the last - command was a kill command. The text is deleted. If START is - less than END, the text is appended, otherwise prepended. If the - last command was not a kill, a new kill ring slot is used. - - -File: readline.info, Node: Character Input, Next: Terminal Management, Prev: Modifying Text, Up: Readline Convenience Functions - -Character Input ---------------- - - - Function: int rl_read_key (void) - Return the next character available from Readline's current input - stream. This handles input inserted into the input stream via - RL_PENDING_INPUT (*note Readline Variables::) and - `rl_stuff_char()', macros, and characters read from the keyboard. - - - Function: int rl_getc (FILE *stream) - Return the next character available from STREAM, which is assumed - to be the keyboard. - - - Function: int rl_stuff_char (int c) - Insert C into the Readline input stream. It will be "read" before - Readline attempts to read characters from the terminal with - `rl_read_key()'. - - - Function: int rl_execute_next (int c) - Make C be the next command to be executed when `rl_read_key()' is - called. This sets RL_PENDING_INPUT. - - - Function: int rl_clear_pending_input (void) - Unet RL_PENDING_INPUT, effectively negating the effect of any - previous call to `rl_execute_next()'. This works only if the - pending input has not already been read with `rl_read_key()'. - - -File: readline.info, Node: Terminal Management, Next: Utility Functions, Prev: Character Input, Up: Readline Convenience Functions - -Terminal Management -------------------- - - - Function: int rl_prep_terminal (int meta_flag) - Modify the terminal settings for Readline's use, so `readline()' - can read a single character at a time from the keyboard. The - META_FLAG argument should be non-zero if Readline should read - eight-bit input. - - - Function: in rl_deprep_terminal (void) - Undo the effects of `rl_prep_terminal()', leaving the terminal in - the state in which it was before the most recent call to - `rl_prep_terminal()'. - - - Function: void rl_tty_set_default_bindings (Keymap kmap) - Read the operating system's terminal editing characters (as would - be displayed by `stty' to their readline equivalents. The - bindings are performed in KMAP. - - - Function: int rl_reset_terminal (const char *terminal_name) - Reinitialize Readline's idea of the terminal settings using - TERMINAL_NAME as the terminal type (e.g., `vt100'). If - TERMINAL_NAME is NULL, the value of the `TERM' environment - variable is used. - - -File: readline.info, Node: Utility Functions, Next: Alternate Interface, Prev: Terminal Management, Up: Readline Convenience Functions - -Utility Functions ------------------ - - - Function: int rl_extend_line_buffer (int len) - Ensure that `rl_line_buffer' has enough space to hold LEN - characters, possibly reallocating it if necessary. - - - Function: int rl_initialize (void) - Initialize or re-initialize Readline's internal state. It's not - strictly necessary to call this; `readline()' calls it before - reading any input. - - - Function: int rl_ding (void) - Ring the terminal bell, obeying the setting of `bell-style'. - - - Function: int rl_alphabetic (int c) - Return 1 if C is an alphabetic character. - - - Function: void rl_display_match_list (char **matches, int len, int - max) - A convenience function for displaying a list of strings in - columnar format on Readline's output stream. `matches' is the list - of strings, in argv format, such as a list of completion matches. - `len' is the number of strings in `matches', and `max' is the - length of the longest string in `matches'. This function uses the - setting of `print-completions-horizontally' to select how the - matches are displayed (*note Readline Init File Syntax::). - - The following are implemented as macros, defined in `chardefs.h'. -Applications should refrain from using them. - - - Function: int _rl_uppercase_p (int c) - Return 1 if C is an uppercase alphabetic character. - - - Function: int _rl_lowercase_p (int c) - Return 1 if C is a lowercase alphabetic character. - - - Function: int _rl_digit_p (int c) - Return 1 if C is a numeric character. - - - Function: int _rl_to_upper (int c) - If C is a lowercase alphabetic character, return the corresponding - uppercase character. - - - Function: int _rl_to_lower (int c) - If C is an uppercase alphabetic character, return the corresponding - lowercase character. - - - Function: int _rl_digit_value (int c) - If C is a number, return the value it represents. - - -File: readline.info, Node: Alternate Interface, Prev: Utility Functions, Up: Readline Convenience Functions - -Alternate Interface -------------------- - - An alternate interface is available to plain `readline()'. Some -applications need to interleave keyboard I/O with file, device, or -window system I/O, typically by using a main loop to `select()' on -various file descriptors. To accomodate this need, readline can also -be invoked as a `callback' function from an event loop. There are -functions available to make this easy. - - - Function: void rl_callback_handler_install (const char *prompt, - rl_vcpfunc_t *lhandler) - Set up the terminal for readline I/O and display the initial - expanded value of PROMPT. Save the value of LHANDLER to use as a - function to call when a complete line of input has been entered. - The function takes the text of the line as an argument. - - - Function: void rl_callback_read_char (void) - Whenever an application determines that keyboard input is - available, it should call `rl_callback_read_char()', which will - read the next character from the current input source. If that - character completes the line, `rl_callback_read_char' will invoke - the LHANDLER function saved by `rl_callback_handler_install' to - process the line. `EOF' is indicated by calling LHANDLER with a - `NULL' line. - - - Function: void rl_callback_handler_remove (void) - Restore the terminal to its initial state and remove the line - handler. This may be called from within a callback as well as - independently. - -An Example ----------- - - Here is a function which changes lowercase characters to their -uppercase equivalents, and uppercase characters to lowercase. If this -function was bound to `M-c', then typing `M-c' would change the case of -the character under point. Typing `M-1 0 M-c' would change the case of -the following 10 characters, leaving the cursor on the last character -changed. - - /* Invert the case of the COUNT following characters. */ - int - invert_case_line (count, key) - int count, key; - { - register int start, end, i; - - start = rl_point; - - if (rl_point >= rl_end) - return (0); - - if (count < 0) - { - direction = -1; - count = -count; - } - else - direction = 1; - - /* Find the end of the range to modify. */ - end = start + (count * direction); - - /* Force it to be within range. */ - if (end > rl_end) - end = rl_end; - else if (end < 0) - end = 0; - - if (start == end) - return (0); - - if (start > end) - { - int temp = start; - start = end; - end = temp; - } - - /* Tell readline that we are modifying the line, so it will save - the undo information. */ - rl_modifying (start, end); - - for (i = start; i != end; i++) - { - if (_rl_uppercase_p (rl_line_buffer[i])) - rl_line_buffer[i] = _rl_to_lower (rl_line_buffer[i]); - else if (_rl_lowercase_p (rl_line_buffer[i])) - rl_line_buffer[i] = _rl_to_upper (rl_line_buffer[i]); - } - /* Move point to on top of the last character changed. */ - rl_point = (direction == 1) ? end - 1 : start; - return (0); - } - - -File: readline.info, Node: Readline Signal Handling, Next: Custom Completers, Prev: Readline Convenience Functions, Up: Programming with GNU Readline - -Readline Signal Handling -======================== - - Signals are asynchronous events sent to a process by the Unix kernel, -sometimes on behalf of another process. They are intended to indicate -exceptional events, like a user pressing the interrupt key on his -terminal, or a network connection being broken. There is a class of -signals that can be sent to the process currently reading input from -the keyboard. Since Readline changes the terminal attributes when it -is called, it needs to perform special processing when a signal is -received to restore the terminal to a sane state, or provide application -writers with functions to do so manually. - - Readline contains an internal signal handler that is installed for a -number of signals (`SIGINT', `SIGQUIT', `SIGTERM', `SIGALRM', -`SIGTSTP', `SIGTTIN', and `SIGTTOU'). When one of these signals is -received, the signal handler will reset the terminal attributes to -those that were in effect before `readline()' was called, reset the -signal handling to what it was before `readline()' was called, and -resend the signal to the calling application. If and when the calling -application's signal handler returns, Readline will reinitialize the -terminal and continue to accept input. When a `SIGINT' is received, -the Readline signal handler performs some additional work, which will -cause any partially-entered line to be aborted (see the description of -`rl_free_line_state()' below). - - There is an additional Readline signal handler, for `SIGWINCH', which -the kernel sends to a process whenever the terminal's size changes (for -example, if a user resizes an `xterm'). The Readline `SIGWINCH' -handler updates Readline's internal screen size information, and then -calls any `SIGWINCH' signal handler the calling application has -installed. Readline calls the application's `SIGWINCH' signal handler -without resetting the terminal to its original state. If the -application's signal handler does more than update its idea of the -terminal size and return (for example, a `longjmp' back to a main -processing loop), it _must_ call `rl_cleanup_after_signal()' (described -below), to restore the terminal state. - - Readline provides two variables that allow application writers to -control whether or not it will catch certain signals and act on them -when they are received. It is important that applications change the -values of these variables only when calling `readline()', not in a -signal handler, so Readline's internal signal state is not corrupted. - - - Variable: int rl_catch_signals - If this variable is non-zero, Readline will install signal - handlers for `SIGINT', `SIGQUIT', `SIGTERM', `SIGALRM', `SIGTSTP', - `SIGTTIN', and `SIGTTOU'. - - The default value of `rl_catch_signals' is 1. - - - Variable: int rl_catch_sigwinch - If this variable is non-zero, Readline will install a signal - handler for `SIGWINCH'. - - The default value of `rl_catch_sigwinch' is 1. - - If an application does not wish to have Readline catch any signals, -or to handle signals other than those Readline catches (`SIGHUP', for -example), Readline provides convenience functions to do the necessary -terminal and internal state cleanup upon receipt of a signal. - - - Function: void rl_cleanup_after_signal (void) - This function will reset the state of the terminal to what it was - before `readline()' was called, and remove the Readline signal - handlers for all signals, depending on the values of - `rl_catch_signals' and `rl_catch_sigwinch'. - - - Function: void rl_free_line_state (void) - This will free any partial state associated with the current input - line (undo information, any partial history entry, any - partially-entered keyboard macro, and any partially-entered - numeric argument). This should be called before - `rl_cleanup_after_signal()'. The Readline signal handler for - `SIGINT' calls this to abort the current input line. - - - Function: void rl_reset_after_signal (void) - This will reinitialize the terminal and reinstall any Readline - signal handlers, depending on the values of `rl_catch_signals' and - `rl_catch_sigwinch'. - - If an application does not wish Readline to catch `SIGWINCH', it may -call `rl_resize_terminal()' or `rl_set_screen_size()' to force Readline -to update its idea of the terminal size when a `SIGWINCH' is received. - - - Function: void rl_resize_terminal (void) - Update Readline's internal screen size by reading values from the - kernel. - - - Function: void rl_set_screen_size (int rows, int cols) - Set Readline's idea of the terminal size to ROWS rows and COLS - columns. - - The following functions install and remove Readline's signal -handlers. - - - Function: int rl_set_signals (void) - Install Readline's signal handler for `SIGINT', `SIGQUIT', - `SIGTERM', `SIGALRM', `SIGTSTP', `SIGTTIN', `SIGTTOU', and - `SIGWINCH', depending on the values of `rl_catch_signals' and - `rl_catch_sigwinch'. - - - Function: int rl_clear_signals (void) - Remove all of the Readline signal handlers installed by - `rl_set_signals()'. - - -File: readline.info, Node: Custom Completers, Prev: Readline Signal Handling, Up: Programming with GNU Readline - -Custom Completers -================= - - Typically, a program that reads commands from the user has a way of -disambiguating commands and data. If your program is one of these, then -it can provide completion for commands, data, or both. The following -sections describe how your program and Readline cooperate to provide -this service. - -* Menu: - -* How Completing Works:: The logic used to do completion. -* Completion Functions:: Functions provided by Readline. -* Completion Variables:: Variables which control completion. -* A Short Completion Example:: An example of writing completer subroutines. - - -File: readline.info, Node: How Completing Works, Next: Completion Functions, Up: Custom Completers - -How Completing Works --------------------- - - In order to complete some text, the full list of possible completions -must be available. That is, it is not possible to accurately expand a -partial word without knowing all of the possible words which make sense -in that context. The Readline library provides the user interface to -completion, and two of the most common completion functions: filename -and username. For completing other types of text, you must write your -own completion function. This section describes exactly what such -functions must do, and provides an example. - - There are three major functions used to perform completion: - - 1. The user-interface function `rl_complete()'. This function is - called with the same arguments as other bindable Readline - functions: COUNT and INVOKING_KEY. It isolates the word to be - completed and calls `rl_completion_matches()' to generate a list - of possible completions. It then either lists the possible - completions, inserts the possible completions, or actually - performs the completion, depending on which behavior is desired. - - 2. The internal function `rl_completion_matches()' uses an - application-supplied "generator" function to generate the list of - possible matches, and then returns the array of these matches. - The caller should place the address of its generator function in - `rl_completion_entry_function'. - - 3. The generator function is called repeatedly from - `rl_completion_matches()', returning a string each time. The - arguments to the generator function are TEXT and STATE. TEXT is - the partial word to be completed. STATE is zero the first time - the function is called, allowing the generator to perform any - necessary initialization, and a positive non-zero integer for each - subsequent call. The generator function returns `(char *)NULL' to - inform `rl_completion_matches()' that there are no more - possibilities left. Usually the generator function computes the - list of possible completions when STATE is zero, and returns them - one at a time on subsequent calls. Each string the generator - function returns as a match must be allocated with `malloc()'; - Readline frees the strings when it has finished with them. - - - - Function: int rl_complete (int ignore, int invoking_key) - Complete the word at or before point. You have supplied the - function that does the initial simple matching selection algorithm - (see `rl_completion_matches()'). The default is to do filename - completion. - - - Variable: rl_compentry_func_t * rl_completion_entry_function - This is a pointer to the generator function for - `rl_completion_matches()'. If the value of - `rl_completion_entry_function' is `NULL' then the default filename - generator function, `rl_filename_completion_function()', is used. - - -File: readline.info, Node: Completion Functions, Next: Completion Variables, Prev: How Completing Works, Up: Custom Completers - -Completion Functions --------------------- - - Here is the complete list of callable completion functions present in -Readline. - - - Function: int rl_complete_internal (int what_to_do) - Complete the word at or before point. WHAT_TO_DO says what to do - with the completion. A value of `?' means list the possible - completions. `TAB' means do standard completion. `*' means - insert all of the possible completions. `!' means to display all - of the possible completions, if there is more than one, as well as - performing partial completion. - - - Function: int rl_complete (int ignore, int invoking_key) - Complete the word at or before point. You have supplied the - function that does the initial simple matching selection algorithm - (see `rl_completion_matches()' and `rl_completion_entry_function'). - The default is to do filename completion. This calls - `rl_complete_internal()' with an argument depending on - INVOKING_KEY. - - - Function: int rl_possible_completions (int count, int invoking_key) - List the possible completions. See description of `rl_complete - ()'. This calls `rl_complete_internal()' with an argument of `?'. - - - Function: int rl_insert_completions (int count, int invoking_key) - Insert the list of possible completions into the line, deleting the - partially-completed word. See description of `rl_complete()'. - This calls `rl_complete_internal()' with an argument of `*'. - - - Function: char ** rl_completion_matches (const char *text, - rl_compentry_func_t *entry_func) - Returns an array of `(char *)' which is a list of completions for - TEXT. If there are no completions, returns `NULL'. The first - entry in the returned array is the substitution for TEXT. The - remaining entries are the possible completions. The array is - terminated with a `NULL' pointer. - - ENTRY_FUNC is a function of two args, and returns a `(char *)'. - The first argument is TEXT. The second is a state argument; it is - zero on the first call, and non-zero on subsequent calls. - ENTRY_FUNC returns a `NULL' pointer to the caller when there are - no more matches. - - - Function: char * rl_filename_completion_function (const char *text, - int state) - A generator function for filename completion in the general case. - Note that completion in Bash is a little different because of all - the pathnames that must be followed when looking up completions - for a command. The Bash source is a useful reference for writing - custom completion functions. - - - Function: char * rl_username_completion_function (const char *text, - int state) - A completion generator for usernames. TEXT contains a partial - username preceded by a random character (usually `~'). As with all - completion generators, STATE is zero on the first call and non-zero - for subsequent calls. - - -File: readline.info, Node: Completion Variables, Next: A Short Completion Example, Prev: Completion Functions, Up: Custom Completers - -Completion Variables --------------------- - - - Variable: rl_compentry_func_t * rl_completion_entry_function - A pointer to the generator function for `rl_completion_matches()'. - `NULL' means to use `rl_filename_completion_function()', the - default filename completer. - - - Variable: rl_completion_func_t * rl_attempted_completion_function - A pointer to an alternative function to create matches. The - function is called with TEXT, START, and END. START and END are - indices in `rl_line_buffer' defining the boundaries of TEXT, which - is a character string. If this function exists and returns - `NULL', or if this variable is set to `NULL', then `rl_complete()' - will call the value of `rl_completion_entry_function' to generate - matches, otherwise the array of strings returned will be used. If - this function sets the `rl_attempted_completion_over' variable to - a non-zero value, Readline will not perform its default completion - if this function returns no matches. - - - Variable: rl_quote_func_t * rl_filename_quoting_function - A pointer to a function that will quote a filename in an - application-specific fashion. This is called if filename - completion is being attempted and one of the characters in - `rl_filename_quote_characters' appears in a completed filename. - The function is called with TEXT, MATCH_TYPE, and QUOTE_POINTER. - The TEXT is the filename to be quoted. The MATCH_TYPE is either - `SINGLE_MATCH', if there is only one completion match, or - `MULT_MATCH'. Some functions use this to decide whether or not to - insert a closing quote character. The QUOTE_POINTER is a pointer - to any opening quote character the user typed. Some functions - choose to reset this character. - - - Variable: rl_dequote_func_t * rl_filename_dequoting_function - A pointer to a function that will remove application-specific - quoting characters from a filename before completion is attempted, - so those characters do not interfere with matching the text - against names in the filesystem. It is called with TEXT, the text - of the word to be dequoted, and QUOTE_CHAR, which is the quoting - character that delimits the filename (usually `'' or `"'). If - QUOTE_CHAR is zero, the filename was not in an embedded string. - - - Variable: rl_linebuf_func_t * rl_char_is_quoted_p - A pointer to a function to call that determines whether or not a - specific character in the line buffer is quoted, according to - whatever quoting mechanism the program calling readline uses. The - function is called with two arguments: TEXT, the text of the line, - and INDEX, the index of the character in the line. It is used to - decide whether a character found in - `rl_completer_word_break_characters' should be used to break words - for the completer. - - - Variable: int rl_completion_query_items - Up to this many items will be displayed in response to a - possible-completions call. After that, we ask the user if she is - sure she wants to see them all. The default value is 100. - - - Variable: const char * rl_basic_word_break_characters - The basic list of characters that signal a break between words for - the completer routine. The default value of this variable is the - characters which break words for completion in Bash, i.e., `" - \t\n\"\\'`@$><=;|&{("'. - - - Variable: const char * rl_basic_quote_characters - List of quote characters which can cause a word break. - - - Variable: const char * rl_completer_word_break_characters - The list of characters that signal a break between words for - `rl_complete_internal()'. The default list is the value of - `rl_basic_word_break_characters'. - - - Variable: const char * rl_completer_quote_characters - List of characters which can be used to quote a substring of the - line. Completion occurs on the entire substring, and within the - substring `rl_completer_word_break_characters' are treated as any - other character, unless they also appear within this list. - - - Variable: const char * rl_filename_quote_characters - A list of characters that cause a filename to be quoted by the - completer when they appear in a completed filename. The default - is the null string. - - - Variable: const char * rl_special_prefixes - The list of characters that are word break characters, but should - be left in TEXT when it is passed to the completion function. - Programs can use this to help determine what kind of completing to - do. For instance, Bash sets this variable to "$@" so that it can - complete shell variables and hostnames. - - - Variable: int rl_completion_append_character - When a single completion alternative matches at the end of the - command line, this character is appended to the inserted - completion text. The default is a space character (` '). Setting - this to the null character (`\0') prevents anything being appended - automatically. This can be changed in custom completion functions - to provide the "most sensible word separator character" according - to an application-specific command line syntax specification. - - - Variable: int rl_ignore_completion_duplicates - If non-zero, then disallow duplicates in the matches. Default is - 1. - - - Variable: int rl_filename_completion_desired - Non-zero means that the results of the matches are to be treated as - filenames. This is _always_ zero on entry, and can only be changed - within a completion entry generator function. If it is set to a - non-zero value, directory names have a slash appended and Readline - attempts to quote completed filenames if they contain any - characters in `rl_filename_quote_characters' and - `rl_filename_quoting_desired' is set to a non-zero value. - - - Variable: int rl_filename_quoting_desired - Non-zero means that the results of the matches are to be quoted - using double quotes (or an application-specific quoting mechanism) - if the completed filename contains any characters in - `rl_filename_quote_chars'. This is _always_ non-zero on entry, - and can only be changed within a completion entry generator - function. The quoting is effected via a call to the function - pointed to by `rl_filename_quoting_function'. - - - Variable: int rl_attempted_completion_over - If an application-specific completion function assigned to - `rl_attempted_completion_function' sets this variable to a non-zero - value, Readline will not perform its default filename completion - if the application's completion function returns no matches. It - should be set only by an application's completion function. - - - Variable: int rl_completion_type - Set to a character describing the type of completion Readline is - currently attempting; see the description of - `rl_complete_internal()' (*note Completion Functions::) for the - list of characters. - - - Variable: int rl_inhibit_completion - If this variable is non-zero, completion is inhibited. The - completion character will be inserted as any other bound to - `self-insert'. - - - Variable: rl_compignore_func_t * rl_ignore_some_completions_function - This function, if defined, is called by the completer when real - filename completion is done, after all the matching names have - been generated. It is passed a `NULL' terminated array of matches. - The first element (`matches[0]') is the maximal substring common - to all matches. This function can re-arrange the list of matches - as required, but each element deleted from the array must be freed. - - - Variable: rl_icppfunc_t * rl_directory_completion_hook - This function, if defined, is allowed to modify the directory - portion of filenames Readline completes. It is called with the - address of a string (the current directory name) as an argument, - and may modify that string. If the string is replaced with a new - string, the old value should be freed. Any modified directory - name should have a trailing slash. The modified value will be - displayed as part of the completion, replacing the directory - portion of the pathname the user typed. It returns an integer - that should be non-zero if the function modifies its directory - argument. It could be used to expand symbolic links or shell - variables in pathnames. - - - Variable: rl_compdisp_func_t * rl_completion_display_matches_hook - If non-zero, then this is the address of a function to call when - completing a word would normally display the list of possible - matches. This function is called in lieu of Readline displaying - the list. It takes three arguments: (`char **'MATCHES, `int' - NUM_MATCHES, `int' MAX_LENGTH) where MATCHES is the array of - matching strings, NUM_MATCHES is the number of strings in that - array, and MAX_LENGTH is the length of the longest string in that - array. Readline provides a convenience function, - `rl_display_match_list', that takes care of doing the display to - Readline's output stream. That function may be called from this - hook. - - -File: readline.info, Node: A Short Completion Example, Prev: Completion Variables, Up: Custom Completers - -A Short Completion Example --------------------------- - - Here is a small application demonstrating the use of the GNU Readline -library. It is called `fileman', and the source code resides in -`examples/fileman.c'. This sample application provides completion of -command names, line editing features, and access to the history list. - - /* fileman.c -- A tiny application which demonstrates how to use the - GNU Readline library. This application interactively allows users - to manipulate files and their modes. */ - - #include - #include - #include - #include - #include - - #include - #include - - extern char *xmalloc (); - - /* The names of functions that actually do the manipulation. */ - int com_list __P((char *)); - int com_view __P((char *)); - int com_rename __P((char *)); - int com_stat __P((char *)); - int com_pwd __P((char *)); - int com_delete __P((char *)); - int com_help __P((char *)); - int com_cd __P((char *)); - int com_quit __P((char *)); - - /* A structure which contains information on the commands this program - can understand. */ - - typedef struct { - char *name; /* User printable name of the function. */ - rl_icpfunc_t *func; /* Function to call to do the job. */ - char *doc; /* Documentation for this function. */ - } COMMAND; - - COMMAND commands[] = { - { "cd", com_cd, "Change to directory DIR" }, - { "delete", com_delete, "Delete FILE" }, - { "help", com_help, "Display this text" }, - { "?", com_help, "Synonym for `help'" }, - { "list", com_list, "List files in DIR" }, - { "ls", com_list, "Synonym for `list'" }, - { "pwd", com_pwd, "Print the current working directory" }, - { "quit", com_quit, "Quit using Fileman" }, - { "rename", com_rename, "Rename FILE to NEWNAME" }, - { "stat", com_stat, "Print out statistics on FILE" }, - { "view", com_view, "View the contents of FILE" }, - { (char *)NULL, (rl_icpfunc_t *)NULL, (char *)NULL } - }; - - /* Forward declarations. */ - char *stripwhite (); - COMMAND *find_command (); - - /* The name of this program, as taken from argv[0]. */ - char *progname; - - /* When non-zero, this means the user is done using this program. */ - int done; - - char * - dupstr (s) - int s; - { - char *r; - - r = xmalloc (strlen (s) + 1); - strcpy (r, s); - return (r); - } - - main (argc, argv) - int argc; - char **argv; - { - char *line, *s; - - progname = argv[0]; - - initialize_readline (); /* Bind our completer. */ - - /* Loop reading and executing lines until the user quits. */ - for ( ; done == 0; ) - { - line = readline ("FileMan: "); - - if (!line) - break; - - /* Remove leading and trailing whitespace from the line. - Then, if there is anything left, add it to the history list - and execute it. */ - s = stripwhite (line); - - if (*s) - { - add_history (s); - execute_line (s); - } - - free (line); - } - exit (0); - } - - /* Execute a command line. */ - int - execute_line (line) - char *line; - { - register int i; - COMMAND *command; - char *word; - - /* Isolate the command word. */ - i = 0; - while (line[i] && whitespace (line[i])) - i++; - word = line + i; - - while (line[i] && !whitespace (line[i])) - i++; - - if (line[i]) - line[i++] = '\0'; - - command = find_command (word); - - if (!command) - { - fprintf (stderr, "%s: No such command for FileMan.\n", word); - return (-1); - } - - /* Get argument to command, if any. */ - while (whitespace (line[i])) - i++; - - word = line + i; - - /* Call the function. */ - return ((*(command->func)) (word)); - } - - /* Look up NAME as the name of a command, and return a pointer to that - command. Return a NULL pointer if NAME isn't a command name. */ - COMMAND * - find_command (name) - char *name; - { - register int i; - - for (i = 0; commands[i].name; i++) - if (strcmp (name, commands[i].name) == 0) - return (&commands[i]); - - return ((COMMAND *)NULL); - } - - /* Strip whitespace from the start and end of STRING. Return a pointer - into STRING. */ - char * - stripwhite (string) - char *string; - { - register char *s, *t; - - for (s = string; whitespace (*s); s++) - ; - - if (*s == 0) - return (s); - - t = s + strlen (s) - 1; - while (t > s && whitespace (*t)) - t--; - *++t = '\0'; - - return s; - } - - /* **************************************************************** */ - /* */ - /* Interface to Readline Completion */ - /* */ - /* **************************************************************** */ - - char *command_generator __P((const char *, int)); - char **fileman_completion __P((const char *, int, int)); - - /* Tell the GNU Readline library how to complete. We want to try to - complete on command names if this is the first word in the line, or - on filenames if not. */ - initialize_readline () - { - /* Allow conditional parsing of the ~/.inputrc file. */ - rl_readline_name = "FileMan"; - - /* Tell the completer that we want a crack first. */ - rl_attempted_completion_function = fileman_completion; - } - - /* Attempt to complete on the contents of TEXT. START and END - bound the region of rl_line_buffer that contains the word to - complete. TEXT is the word to complete. We can use the entire - contents of rl_line_buffer in case we want to do some simple - parsing. Returnthe array of matches, or NULL if there aren't any. */ - char ** - fileman_completion (text, start, end) - const char *text; - int start, end; - { - char **matches; - - matches = (char **)NULL; - - /* If this word is at the start of the line, then it is a command - to complete. Otherwise it is the name of a file in the current - directory. */ - if (start == 0) - matches = rl_completion_matches (text, command_generator); - - return (matches); - } - - /* Generator function for command completion. STATE lets us - know whether to start from scratch; without any state - (i.e. STATE == 0), then we start at the top of the list. */ - char * - command_generator (text, state) - const char *text; - int state; - { - static int list_index, len; - char *name; - - /* If this is a new word to complete, initialize now. This - includes saving the length of TEXT for efficiency, and - initializing the index variable to 0. */ - if (!state) - { - list_index = 0; - len = strlen (text); - } - - /* Return the next name which partially matches from the - command list. */ - while (name = commands[list_index].name) - { - list_index++; - - if (strncmp (name, text, len) == 0) - return (dupstr(name)); - } - - /* If no names matched, then return NULL. */ - return ((char *)NULL); - } - - /* **************************************************************** */ - /* */ - /* FileMan Commands */ - /* */ - /* **************************************************************** */ - - /* String to pass to system (). This is for the LIST, VIEW and RENAME - commands. */ - static char syscom[1024]; - - /* List the file(s) named in arg. */ - com_list (arg) - char *arg; - { - if (!arg) - arg = ""; - - sprintf (syscom, "ls -FClg %s", arg); - return (system (syscom)); - } - - com_view (arg) - char *arg; - { - if (!valid_argument ("view", arg)) - return 1; - - sprintf (syscom, "more %s", arg); - return (system (syscom)); - } - - com_rename (arg) - char *arg; - { - too_dangerous ("rename"); - return (1); - } - - com_stat (arg) - char *arg; - { - struct stat finfo; - - if (!valid_argument ("stat", arg)) - return (1); - - if (stat (arg, &finfo) == -1) - { - perror (arg); - return (1); - } - - printf ("Statistics for `%s':\n", arg); - - printf ("%s has %d link%s, and is %d byte%s in length.\n", arg, - finfo.st_nlink, - (finfo.st_nlink == 1) ? "" : "s", - finfo.st_size, - (finfo.st_size == 1) ? "" : "s"); - printf ("Inode Last Change at: %s", ctime (&finfo.st_ctime)); - printf (" Last access at: %s", ctime (&finfo.st_atime)); - printf (" Last modified at: %s", ctime (&finfo.st_mtime)); - return (0); - } - - com_delete (arg) - char *arg; - { - too_dangerous ("delete"); - return (1); - } - - /* Print out help for ARG, or for all of the commands if ARG is - not present. */ - com_help (arg) - char *arg; - { - register int i; - int printed = 0; - - for (i = 0; commands[i].name; i++) - { - if (!*arg || (strcmp (arg, commands[i].name) == 0)) - { - printf ("%s\t\t%s.\n", commands[i].name, commands[i].doc); - printed++; - } - } - - if (!printed) - { - printf ("No commands match `%s'. Possibilties are:\n", arg); - - for (i = 0; commands[i].name; i++) - { - /* Print in six columns. */ - if (printed == 6) - { - printed = 0; - printf ("\n"); - } - - printf ("%s\t", commands[i].name); - printed++; - } - - if (printed) - printf ("\n"); - } - return (0); - } - - /* Change to the directory ARG. */ - com_cd (arg) - char *arg; - { - if (chdir (arg) == -1) - { - perror (arg); - return 1; - } - - com_pwd (""); - return (0); - } - - /* Print out the current working directory. */ - com_pwd (ignore) - char *ignore; - { - char dir[1024], *s; - - s = getcwd (dir, sizeof(dir) - 1); - if (s == 0) - { - printf ("Error getting pwd: %s\n", dir); - return 1; - } - - printf ("Current directory is %s\n", dir); - return 0; - } - - /* The user wishes to quit using this program. Just set DONE - non-zero. */ - com_quit (arg) - char *arg; - { - done = 1; - return (0); - } - - /* Function which tells you that you can't do this. */ - too_dangerous (caller) - char *caller; - { - fprintf (stderr, - "%s: Too dangerous for me to distribute. Write it yourself.\n", - caller); - } - - /* Return non-zero if ARG is a valid argument for CALLER, else print - an error message and return zero. */ - int - valid_argument (caller, arg) - char *caller, *arg; - { - if (!arg || !*arg) - { - fprintf (stderr, "%s: Argument required.\n", caller); - return (0); - } - - return (1); - } - - -File: readline.info, Node: Concept Index, Next: Function and Variable Index, Prev: Programming with GNU Readline, Up: Top - -Concept Index -************* - -* Menu: - -* command editing: Readline Bare Essentials. -* editing command lines: Readline Bare Essentials. -* initialization file, readline: Readline Init File. -* interaction, readline: Readline Interaction. -* kill ring: Readline Killing Commands. -* killing text: Readline Killing Commands. -* notation, readline: Readline Bare Essentials. -* readline, function: Basic Behavior. -* yanking text: Readline Killing Commands. - - -File: readline.info, Node: Function and Variable Index, Prev: Concept Index, Up: Top - -Function and Variable Index -*************************** - -* Menu: - -* _rl_digit_p: Utility Functions. -* _rl_digit_value: Utility Functions. -* _rl_lowercase_p: Utility Functions. -* _rl_to_lower: Utility Functions. -* _rl_to_upper: Utility Functions. -* _rl_uppercase_p: Utility Functions. -* abort (C-g): Miscellaneous Commands. -* accept-line (Newline or Return): Commands For History. -* backward-char (C-b): Commands For Moving. -* backward-delete-char (Rubout): Commands For Text. -* backward-kill-line (C-x Rubout): Commands For Killing. -* backward-kill-word (M-): Commands For Killing. -* backward-word (M-b): Commands For Moving. -* beginning-of-history (M-<): Commands For History. -* beginning-of-line (C-a): Commands For Moving. -* bell-style: Readline Init File Syntax. -* call-last-kbd-macro (C-x e): Keyboard Macros. -* capitalize-word (M-c): Commands For Text. -* character-search (C-]): Miscellaneous Commands. -* character-search-backward (M-C-]): Miscellaneous Commands. -* clear-screen (C-l): Commands For Moving. -* comment-begin: Readline Init File Syntax. -* complete (): Commands For Completion. -* completion-query-items: Readline Init File Syntax. -* convert-meta: Readline Init File Syntax. -* copy-backward-word (): Commands For Killing. -* copy-forward-word (): Commands For Killing. -* copy-region-as-kill (): Commands For Killing. -* delete-char (C-d): Commands For Text. -* delete-char-or-list (): Commands For Completion. -* delete-horizontal-space (): Commands For Killing. -* digit-argument (M-0, M-1, ... M--): Numeric Arguments. -* disable-completion: Readline Init File Syntax. -* do-uppercase-version (M-a, M-b, M-X, ...): Miscellaneous Commands. -* downcase-word (M-l): Commands For Text. -* dump-functions (): Miscellaneous Commands. -* dump-macros (): Miscellaneous Commands. -* dump-variables (): Miscellaneous Commands. -* editing-mode: Readline Init File Syntax. -* enable-keypad: Readline Init File Syntax. -* end-kbd-macro (C-x )): Keyboard Macros. -* end-of-history (M->): Commands For History. -* end-of-line (C-e): Commands For Moving. -* exchange-point-and-mark (C-x C-x): Miscellaneous Commands. -* expand-tilde: Readline Init File Syntax. -* forward-backward-delete-char (): Commands For Text. -* forward-char (C-f): Commands For Moving. -* forward-search-history (C-s): Commands For History. -* forward-word (M-f): Commands For Moving. -* history-search-backward (): Commands For History. -* history-search-forward (): Commands For History. -* horizontal-scroll-mode: Readline Init File Syntax. -* input-meta: Readline Init File Syntax. -* insert-comment (M-#): Miscellaneous Commands. -* insert-completions (M-*): Commands For Completion. -* isearch-terminators: Readline Init File Syntax. -* keymap: Readline Init File Syntax. -* kill-line (C-k): Commands For Killing. -* kill-region (): Commands For Killing. -* kill-whole-line (): Commands For Killing. -* kill-word (M-d): Commands For Killing. -* mark-modified-lines: Readline Init File Syntax. -* menu-complete (): Commands For Completion. -* meta-flag: Readline Init File Syntax. -* next-history (C-n): Commands For History. -* non-incremental-forward-search-history (M-n): Commands For History. -* non-incremental-reverse-search-history (M-p): Commands For History. -* output-meta: Readline Init File Syntax. -* possible-completions (M-?): Commands For Completion. -* prefix-meta (): Miscellaneous Commands. -* previous-history (C-p): Commands For History. -* quoted-insert (C-q or C-v): Commands For Text. -* re-read-init-file (C-x C-r): Miscellaneous Commands. -* readline: Basic Behavior. -* redraw-current-line (): Commands For Moving. -* reverse-search-history (C-r): Commands For History. -* revert-line (M-r): Miscellaneous Commands. -* rl_add_defun: Function Naming. -* rl_add_funmap_entry: Associating Function Names and Bindings. -* rl_add_undo: Allowing Undoing. -* rl_alphabetic: Utility Functions. -* rl_already_prompted: Readline Variables. -* rl_attempted_completion_function: Completion Variables. -* rl_attempted_completion_over: Completion Variables. -* rl_basic_quote_characters: Completion Variables. -* rl_basic_word_break_characters: Completion Variables. -* rl_begin_undo_group: Allowing Undoing. -* rl_bind_key: Binding Keys. -* rl_bind_key_in_map: Binding Keys. -* rl_binding_keymap: Readline Variables. -* rl_callback_handler_install: Alternate Interface. -* rl_callback_handler_remove: Alternate Interface. -* rl_callback_read_char: Alternate Interface. -* rl_catch_signals: Readline Signal Handling. -* rl_catch_sigwinch: Readline Signal Handling. -* rl_char_is_quoted_p: Completion Variables. -* rl_cleanup_after_signal: Readline Signal Handling. -* rl_clear_message: Redisplay. -* rl_clear_pending_input: Character Input. -* rl_clear_signals: Readline Signal Handling. -* rl_complete <1>: How Completing Works. -* rl_complete: Completion Functions. -* rl_complete_internal: Completion Functions. -* rl_completer_quote_characters: Completion Variables. -* rl_completer_word_break_characters: Completion Variables. -* rl_completion_append_character: Completion Variables. -* rl_completion_display_matches_hook: Completion Variables. -* rl_completion_entry_function <1>: How Completing Works. -* rl_completion_entry_function: Completion Variables. -* rl_completion_matches: Completion Functions. -* rl_completion_query_items: Completion Variables. -* rl_completion_type: Completion Variables. -* rl_copy_keymap: Keymaps. -* rl_copy_text: Modifying Text. -* rl_crlf: Redisplay. -* rl_delete_text: Modifying Text. -* rl_deprep_term_function: Readline Variables. -* rl_deprep_terminal: Terminal Management. -* rl_ding: Utility Functions. -* rl_directory_completion_hook: Completion Variables. -* rl_discard_keymap: Keymaps. -* rl_dispatching: Readline Variables. -* rl_display_match_list: Utility Functions. -* rl_do_undo: Allowing Undoing. -* rl_done: Readline Variables. -* rl_editing_mode: Readline Variables. -* rl_end: Readline Variables. -* rl_end_undo_group: Allowing Undoing. -* rl_erase_empty_line: Readline Variables. -* rl_event_hook: Readline Variables. -* rl_execute_next: Character Input. -* rl_executing_keymap: Readline Variables. -* rl_executing_macro: Readline Variables. -* rl_expand_prompt: Redisplay. -* rl_explicit_arg: Readline Variables. -* rl_extend_line_buffer: Utility Functions. -* rl_filename_completion_desired: Completion Variables. -* rl_filename_completion_function: Completion Functions. -* rl_filename_dequoting_function: Completion Variables. -* rl_filename_quote_characters: Completion Variables. -* rl_filename_quoting_desired: Completion Variables. -* rl_filename_quoting_function: Completion Variables. -* rl_forced_update_display: Redisplay. -* rl_free_line_state: Readline Signal Handling. -* rl_free_undo_list: Allowing Undoing. -* rl_function_dumper: Associating Function Names and Bindings. -* rl_function_of_keyseq: Associating Function Names and Bindings. -* rl_funmap_names: Associating Function Names and Bindings. -* rl_generic_bind: Binding Keys. -* rl_get_keymap: Keymaps. -* rl_get_keymap_by_name: Keymaps. -* rl_get_keymap_name: Keymaps. -* rl_getc: Character Input. -* rl_getc_function: Readline Variables. -* rl_gnu_readline_p: Readline Variables. -* rl_ignore_completion_duplicates: Completion Variables. -* rl_ignore_some_completions_function: Completion Variables. -* rl_inhibit_completion: Completion Variables. -* rl_initialize: Utility Functions. -* rl_insert_completions: Completion Functions. -* rl_insert_text: Modifying Text. -* rl_instream: Readline Variables. -* rl_invoking_keyseqs: Associating Function Names and Bindings. -* rl_invoking_keyseqs_in_map: Associating Function Names and Bindings. -* rl_kill_text: Modifying Text. -* rl_last_func: Readline Variables. -* rl_library_version: Readline Variables. -* rl_line_buffer: Readline Variables. -* rl_list_funmap_names: Associating Function Names and Bindings. -* rl_make_bare_keymap: Keymaps. -* rl_make_keymap: Keymaps. -* rl_mark: Readline Variables. -* rl_message: Redisplay. -* rl_modifying: Allowing Undoing. -* rl_named_function: Associating Function Names and Bindings. -* rl_num_chars_to_read: Readline Variables. -* rl_numeric_arg: Readline Variables. -* rl_on_new_line: Redisplay. -* rl_on_new_line_with_prompt: Redisplay. -* rl_outstream: Readline Variables. -* rl_parse_and_bind: Binding Keys. -* rl_pending_input: Readline Variables. -* rl_point: Readline Variables. -* rl_possible_completions: Completion Functions. -* rl_pre_input_hook: Readline Variables. -* rl_prep_term_function: Readline Variables. -* rl_prep_terminal: Terminal Management. -* rl_prompt: Readline Variables. -* rl_read_init_file: Binding Keys. -* rl_read_key: Character Input. -* rl_readline_name: Readline Variables. -* rl_readline_state: Readline Variables. -* rl_redisplay: Redisplay. -* rl_redisplay_function: Readline Variables. -* rl_reset_after_signal: Readline Signal Handling. -* rl_reset_line_state: Redisplay. -* rl_reset_terminal: Terminal Management. -* rl_resize_terminal: Readline Signal Handling. -* rl_restore_prompt: Redisplay. -* rl_save_prompt: Redisplay. -* rl_set_key: Binding Keys. -* rl_set_keymap: Keymaps. -* rl_set_screen_size: Readline Signal Handling. -* rl_set_signals: Readline Signal Handling. -* rl_special_prefixes: Completion Variables. -* rl_startup_hook: Readline Variables. -* rl_stuff_char: Character Input. -* rl_terminal_name: Readline Variables. -* rl_tty_set_default_bindings: Terminal Management. -* rl_unbind_command_in_map: Binding Keys. -* rl_unbind_function_in_map: Binding Keys. -* rl_unbind_key: Binding Keys. -* rl_unbind_key_in_map: Binding Keys. -* rl_username_completion_function: Completion Functions. -* self-insert (a, b, A, 1, !, ...): Commands For Text. -* set-mark (C-@): Miscellaneous Commands. -* show-all-if-ambiguous: Readline Init File Syntax. -* start-kbd-macro (C-x (): Keyboard Macros. -* transpose-chars (C-t): Commands For Text. -* transpose-words (M-t): Commands For Text. -* undo (C-_ or C-x C-u): Miscellaneous Commands. -* universal-argument (): Numeric Arguments. -* unix-line-discard (C-u): Commands For Killing. -* unix-word-rubout (C-w): Commands For Killing. -* upcase-word (M-u): Commands For Text. -* visible-stats: Readline Init File Syntax. -* yank (C-y): Commands For Killing. -* yank-last-arg (M-. or M-_): Commands For History. -* yank-nth-arg (M-C-y): Commands For History. -* yank-pop (M-y): Commands For Killing. - - - -Tag Table: -Node: Top1164 -Node: Command Line Editing1763 -Node: Introduction and Notation2414 -Node: Readline Interaction4032 -Node: Readline Bare Essentials5219 -Node: Readline Movement Commands7000 -Node: Readline Killing Commands7957 -Node: Readline Arguments9867 -Node: Searching10903 -Node: Readline Init File12859 -Node: Readline Init File Syntax13920 -Node: Conditional Init Constructs23536 -Node: Sample Init File25975 -Node: Bindable Readline Commands29145 -Node: Commands For Moving30195 -Node: Commands For History31044 -Node: Commands For Text33826 -Node: Commands For Killing35831 -Node: Numeric Arguments37804 -Node: Commands For Completion38932 -Node: Keyboard Macros40421 -Node: Miscellaneous Commands40980 -Node: Readline vi Mode43796 -Node: Programming with GNU Readline45549 -Node: Basic Behavior46517 -Node: Custom Functions49930 -Node: Readline Typedefs50908 -Node: Function Writing52537 -Node: Readline Variables53621 -Node: Readline Convenience Functions62417 -Node: Function Naming63272 -Node: Keymaps64524 -Node: Binding Keys66280 -Node: Associating Function Names and Bindings69206 -Node: Allowing Undoing71451 -Node: Redisplay73986 -Node: Modifying Text76536 -Node: Character Input77451 -Node: Terminal Management78661 -Node: Utility Functions79830 -Node: Alternate Interface81893 -Node: Readline Signal Handling85289 -Node: Custom Completers90545 -Node: How Completing Works91260 -Node: Completion Functions94258 -Node: Completion Variables97317 -Node: A Short Completion Example106674 -Node: Concept Index119199 -Node: Function and Variable Index119953 - -End Tag Table diff --git a/readline/doc/readline.ps b/readline/doc/readline.ps deleted file mode 100644 --- a/readline/doc/readline.ps +++ /dev/null @@ -1,4858 +0,0 @@ -%!PS-Adobe-2.0 -%%Creator: dvips(k) 5.82 Copyright 1998 Radical Eye Software -%%Title: readline.dvi -%%Pages: 62 -%%PageOrder: Ascend -%%BoundingBox: 0 0 612 792 -%%EndComments -%DVIPSWebPage: (www.radicaleye.com) -%DVIPSCommandLine: dvips -D 300 -t letter -o readline.ps 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v 87 1392 a Fm(RET)p 87 1399 V 160 1390 -a Fn(i)175 1392 y Fu(,)23 b(and)306 1390 y Fn(h)p 318 -1364 74 2 v 318 1392 a Fm(T)m(AB)p 318 1399 V 390 1390 -a Fn(i)427 1392 y Fu(all)f(stand)g(for)f(themselv)o(es)h(when)h(seen)f -(in)g(this)g(text,)h(or)e(in)i(an)e(init)i(\014le)g(\(see)75 -1447 y(Section)d(1.3)f([Readline)i(Init)f(File],)h(page)e(4\).)32 -b(If)19 b(y)o(our)g(k)o(eyb)q(oard)h(lac)o(ks)f(a)1444 -1445 y Fn(h)p 1456 1419 72 2 v 1456 1447 a Fm(LFD)p 1456 -1454 V 1526 1445 a Fn(i)1560 1447 y Fu(k)o(ey)l(,)h(t)o(yping)1802 -1445 y Fn(h)p 1814 1419 49 2 v 1814 1447 a Fm(C-j)p 1814 -1454 V 1860 1445 a Fn(i)75 1501 y Fu(will)c(pro)q(duce)g(the)f(desired) -h(c)o(haracter.)j(The)874 1499 y Fn(h)p 886 1473 76 2 -v 886 1501 a Fm(RET)p 886 1509 V 959 1499 a Fn(i)989 -1501 y Fu(k)o(ey)c(ma)o(y)f(b)q(e)h(lab)q(eled)1385 1499 -y Fn(h)p 1397 1473 109 2 v 1397 1501 a Fm(Return)p 1397 -1509 V 1503 1499 a Fn(i)1533 1501 y Fu(or)1588 1499 y -Fn(h)p 1600 1473 86 2 v 1600 1501 a Fm(En)o(ter)p 1600 -1509 V 1684 1499 a Fn(i)1714 1501 y Fu(on)f(some)75 1556 -y(k)o(eyb)q(oards.)75 1688 y Fs(1.2)33 b(Readline)23 -b(In)n(teraction)137 1786 y Fu(Often)13 b(during)h(an)e(in)o(teractiv)o -(e)h(session)g(y)o(ou)g(t)o(yp)q(e)f(in)i(a)e(long)h(line)h(of)e(text,) -h(only)g(to)f(notice)h(that)f(the)75 1841 y(\014rst)k(w)o(ord)f(on)h -(the)h(line)h(is)e(missp)q(elled.)26 b(The)16 b(Readline)j(library)e -(giv)o(es)f(y)o(ou)g(a)g(set)g(of)g(commands)g(for)75 -1896 y(manipulating)g(the)f(text)g(as)f(y)o(ou)h(t)o(yp)q(e)g(it)g(in,) -g(allo)o(wing)h(y)o(ou)f(to)f(just)h(\014x)g(y)o(our)f(t)o(yp)q(o,)g -(and)h(not)g(forcing)75 1950 y(y)o(ou)f(to)f(ret)o(yp)q(e)h(the)g(ma)s -(jorit)o(y)f(of)h(the)g(line.)21 b(Using)15 b(these)f(editing)h -(commands,)f(y)o(ou)g(mo)o(v)o(e)f(the)h(cursor)75 2005 -y(to)i(the)i(place)g(that)e(needs)i(correction,)g(and)f(delete)h(or)f -(insert)g(the)h(text)e(of)h(the)g(corrections.)26 b(Then,)75 -2060 y(when)16 b(y)o(ou)f(are)h(satis\014ed)g(with)g(the)f(line,)i(y)o -(ou)e(simply)i(press)1160 2058 y Fn(h)p 1172 2032 76 -2 v 1172 2060 a Fm(RET)p 1172 2068 V 1245 2058 a Fn(i)1260 -2060 y Fu(.)k(Y)l(ou)16 b(do)f(not)h(ha)o(v)o(e)f(to)g(b)q(e)h(at)f -(the)75 2115 y(end)k(of)e(the)h(line)i(to)d(press)563 -2113 y Fn(h)p 575 2087 V 575 2115 a Fm(RET)p 575 2122 -V 648 2113 a Fn(i)663 2115 y Fu(;)i(the)f(en)o(tire)h(line)g(is)g -(accepted)f(regardless)g(of)g(the)g(lo)q(cation)g(of)g(the)75 -2170 y(cursor)d(within)h(the)g(line.)75 2284 y Fj(1.2.1)30 -b(Readline)20 b(Bare)g(Essen)n(tials)137 2382 y Fu(In)12 -b(order)g(to)f(en)o(ter)g(c)o(haracters)g(in)o(to)g(the)h(line,)h -(simply)g(t)o(yp)q(e)f(them.)18 b(The)12 b(t)o(yp)q(ed)g(c)o(haracter)f -(app)q(ears)75 2437 y(where)16 b(the)h(cursor)f(w)o(as,)f(and)h(then)h -(the)f(cursor)g(mo)o(v)o(es)g(one)g(space)g(to)g(the)g(righ)o(t.)23 -b(If)17 b(y)o(ou)f(mist)o(yp)q(e)g(a)75 2492 y(c)o(haracter,)e(y)o(ou)h -(can)g(use)h(y)o(our)f(erase)g(c)o(haracter)f(to)h(bac)o(k)g(up)g(and)h -(delete)g(the)f(mist)o(yp)q(ed)h(c)o(haracter.)137 2560 -y(Sometimes)g(y)o(ou)f(ma)o(y)g(mist)o(yp)q(e)h(a)f(c)o(haracter,)f -(and)i(not)f(notice)h(the)f(error)g(un)o(til)i(y)o(ou)e(ha)o(v)o(e)g(t) -o(yp)q(ed)75 2615 y(sev)o(eral)g(other)f(c)o(haracters.)19 -b(In)c(that)e(case,)i(y)o(ou)f(can)g(t)o(yp)q(e)h Fo(C-b)f -Fu(to)g(mo)o(v)o(e)f(the)i(cursor)f(to)g(the)g(left,)h(and)75 -2670 y(then)h(correct)e(y)o(our)h(mistak)o(e.)20 b(Afterw)o(ards,)13 -b(y)o(ou)i(can)g(mo)o(v)o(e)g(the)g(cursor)g(to)g(the)g(righ)o(t)g -(with)g Fo(C-f)p Fu(.)p eop -%%Page: 2 4 -2 3 bop 75 -58 a Fu(2)1322 b(GNU)15 b(Readline)i(Library)137 -149 y(When)g(y)o(ou)f(add)g(text)g(in)h(the)g(middle)h(of)e(a)f(line,)j -(y)o(ou)e(will)i(notice)f(that)f(c)o(haracters)f(to)h(the)g(righ)o(t)75 -204 y(of)e(the)g(cursor)g(are)g(`pushed)h(o)o(v)o(er')f(to)f(mak)o(e)h -(ro)q(om)g(for)f(the)i(text)f(that)f(y)o(ou)h(ha)o(v)o(e)g(inserted.)21 -b(Lik)o(ewise,)75 259 y(when)e(y)o(ou)g(delete)h(text)e(b)q(ehind)j -(the)e(cursor,)g(c)o(haracters)f(to)g(the)h(righ)o(t)f(of)g(the)h -(cursor)g(are)f(`pulled)75 314 y(bac)o(k')11 b(to)g(\014ll)h(in)h(the)e -(blank)h(space)g(created)f(b)o(y)h(the)f(remo)o(v)m(al)g(of)g(the)h -(text.)18 b(A)11 b(list)h(of)f(the)h(bare)f(essen)o(tials)75 -369 y(for)k(editing)h(the)f(text)g(of)g(an)g(input)h(line)h(follo)o -(ws.)75 449 y Fo(C-b)168 b Fu(Mo)o(v)o(e)14 b(bac)o(k)h(one)h(c)o -(haracter.)75 530 y Fo(C-f)168 b Fu(Mo)o(v)o(e)14 b(forw)o(ard)g(one)h -(c)o(haracter.)75 608 y Fn(h)p 87 582 73 2 v 87 610 a -Fm(DEL)p 87 618 V 158 608 a Fn(i)188 610 y Fu(or)244 -608 y Fn(h)p 256 582 159 2 v 256 610 a Fm(Bac)o(kspace)p -256 618 V 412 608 a Fn(i)315 665 y Fu(Delete)h(the)f(c)o(haracter)g(to) -f(the)h(left)h(of)f(the)g(cursor.)75 745 y Fo(C-d)168 -b Fu(Delete)16 b(the)f(c)o(haracter)g(underneath)h(the)f(cursor.)75 -825 y(Prin)o(ting)h(c)o(haracters)315 880 y(Insert)f(the)h(c)o -(haracter)e(in)o(to)h(the)h(line)h(at)d(the)h(cursor.)75 -961 y Fo(C-_)g Fu(or)f Fo(C-x)h(C-u)315 1015 y Fu(Undo)i(the)g(last)f -(editing)i(command.)25 b(Y)l(ou)17 b(can)g(undo)g(all)g(the)g(w)o(a)o -(y)f(bac)o(k)h(to)f(an)g(empt)o(y)315 1070 y(line.)75 -1151 y(\(Dep)q(ending)i(on)f(y)o(our)g(con\014guration,)g(the)863 -1149 y Fn(h)p 875 1123 V 875 1151 a Fm(Bac)o(kspace)p -875 1159 V 1032 1149 a Fn(i)1063 1151 y Fu(k)o(ey)g(b)q(e)h(set)f(to)f -(delete)i(the)f(c)o(haracter)g(to)f(the)75 1206 y(left)h(of)f(the)h -(cursor)f(and)g(the)596 1204 y Fn(h)p 608 1178 73 2 v -608 1206 a Fm(DEL)p 608 1213 V 679 1204 a Fn(i)710 1206 -y Fu(k)o(ey)h(set)f(to)g(delete)h(the)g(c)o(haracter)f(underneath)h -(the)g(cursor,)f(lik)o(e)75 1260 y Fo(C-d)p Fu(,)e(rather)h(than)g(the) -g(c)o(haracter)g(to)f(the)i(left)f(of)g(the)g(cursor.\))75 -1374 y Fj(1.2.2)30 b(Readline)20 b(Mo)n(v)n(emen)n(t)i(Commands)137 -1471 y Fu(The)14 b(ab)q(o)o(v)o(e)e(table)i(describ)q(es)g(the)g(most)e -(basic)i(k)o(eystrok)o(es)d(that)i(y)o(ou)g(need)h(in)f(order)g(to)g -(do)g(editing)75 1526 y(of)f(the)h(input)h(line.)21 b(F)l(or)12 -b(y)o(our)g(con)o(v)o(enience,)i(man)o(y)f(other)f(commands)h(ha)o(v)o -(e)f(b)q(een)i(added)f(in)h(addition)75 1580 y(to)h Fo(C-b)p -Fu(,)h Fo(C-f)p Fu(,)f Fo(C-d)p Fu(,)g(and)522 1578 y -Fn(h)p 534 1552 V 534 1580 a Fm(DEL)p 534 1588 V 605 -1578 a Fn(i)619 1580 y Fu(.)23 b(Here)16 b(are)g(some)f(commands)h(for) -f(mo)o(ving)h(more)g(rapidly)h(ab)q(out)f(the)75 1635 -y(line.)75 1716 y Fo(C-a)168 b Fu(Mo)o(v)o(e)14 b(to)h(the)g(start)f -(of)h(the)g(line.)75 1796 y Fo(C-e)168 b Fu(Mo)o(v)o(e)14 -b(to)h(the)g(end)h(of)f(the)g(line.)75 1876 y Fo(M-f)168 -b Fu(Mo)o(v)o(e)14 b(forw)o(ard)g(a)h(w)o(ord,)f(where)i(a)e(w)o(ord)h -(is)h(comp)q(osed)f(of)g(letters)g(and)h(digits.)75 1957 -y Fo(M-b)168 b Fu(Mo)o(v)o(e)14 b(bac)o(kw)o(ard)h(a)g(w)o(ord.)75 -2037 y Fo(C-l)168 b Fu(Clear)15 b(the)h(screen,)f(reprin)o(ting)h(the)f -(curren)o(t)g(line)i(at)e(the)g(top.)137 2118 y(Notice)e(ho)o(w)f -Fo(C-f)g Fu(mo)o(v)o(es)f(forw)o(ard)g(a)h(c)o(haracter,)g(while)i -Fo(M-f)e Fu(mo)o(v)o(es)f(forw)o(ard)g(a)h(w)o(ord.)18 -b(It)13 b(is)g(a)f(lo)q(ose)75 2173 y(con)o(v)o(en)o(tion)j(that)f(con) -o(trol)h(k)o(eystrok)o(es)f(op)q(erate)h(on)f(c)o(haracters)h(while)h -(meta)e(k)o(eystrok)o(es)g(op)q(erate)h(on)75 2227 y(w)o(ords.)75 -2341 y Fj(1.2.3)30 b(Readline)20 b(Killing)h(Commands)137 -2438 y Fk(Killing)26 b Fu(text)18 b(means)g(to)g(delete)i(the)f(text)f -(from)g(the)h(line,)i(but)d(to)g(sa)o(v)o(e)g(it)h(a)o(w)o(a)o(y)e(for) -h(later)h(use,)75 2493 y(usually)f(b)o(y)f Fk(y)o(anking)22 -b Fu(\(re-inserting\))17 b(it)g(bac)o(k)g(in)o(to)g(the)h(line.)27 -b(\(`Cut')15 b(and)j(`paste')e(are)g(more)h(recen)o(t)75 -2547 y(jargon)d(for)h(`kill')h(and)g(`y)o(ank'.\))137 -2615 y(If)g(the)f(description)h(for)f(a)g(command)g(sa)o(ys)f(that)h -(it)g(`kills')h(text,)e(then)i(y)o(ou)f(can)g(b)q(e)h(sure)f(that)f(y)o -(ou)75 2670 y(can)h(get)g(the)g(text)g(bac)o(k)g(in)h(a)f(di\013eren)o 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b(from)e(the)g(cursor)g(to)f(the)i(end)g(of)e -(the)i(curren)o(t)f(w)o(ord,)f(or,)h(if)g(b)q(et)o(w)o(een)h(w)o(ords,) -e(to)h(the)315 590 y(end)j(of)f(the)g(next)g(w)o(ord.)k(W)l(ord)c(b)q -(oundaries)i(are)e(the)g(same)g(as)g(those)f(used)i(b)o(y)f -Fo(M-f)p Fu(.)75 668 y Fo(M-)123 666 y Fn(h)p 135 640 -73 2 v 135 668 a Fm(DEL)p 135 675 V 206 666 a Fn(i)315 -668 y Fu(Kill)21 b(from)e(the)g(cursor)f(the)h(start)f(of)h(the)g -(previous)h(w)o(ord,)f(or,)g(if)g(b)q(et)o(w)o(een)h(w)o(ords,)f(to)315 -723 y(the)14 b(start)f(of)g(the)h(previous)g(w)o(ord.)19 -b(W)l(ord)14 b(b)q(oundaries)h(are)e(the)h(same)g(as)f(those)h(used)g -(b)o(y)315 777 y Fo(M-b)p Fu(.)75 855 y Fo(C-w)168 b -Fu(Kill)18 b(from)d(the)g(cursor)h(to)f(the)g(previous)i(whitespace.)22 -b(This)16 b(is)g(di\013eren)o(t)g(than)f Fo(M-)1777 853 -y Fn(h)p 1789 827 V 1789 855 a Fm(DEL)p 1789 863 V 1860 -853 a Fn(i)315 910 y Fu(b)q(ecause)h(the)f(w)o(ord)g(b)q(oundaries)h -(di\013er.)137 987 y(Here)21 b(is)h(ho)o(w)e(to)g Fk(y)o(ank)j -Fu(the)e(text)f(bac)o(k)h(in)o(to)g(the)f(line.)39 b(Y)l(anking)21 -b(means)g(to)f(cop)o(y)h(the)g(most-)75 1042 y(recen)o(tly-killed)d -(text)d(from)f(the)i(kill)h(bu\013er.)75 1120 y Fo(C-y)168 -b Fu(Y)l(ank)15 b(the)h(most)e(recen)o(tly)i(killed)h(text)e(bac)o(k)g -(in)o(to)g(the)h(bu\013er)f(at)f(the)i(cursor.)75 1198 -y Fo(M-y)168 b Fu(Rotate)17 b(the)g(kill-ring,)j(and)d(y)o(ank)g(the)h -(new)f(top.)26 b(Y)l(ou)17 b(can)h(only)g(do)f(this)h(if)f(the)h(prior) -315 1252 y(command)d(is)h Fo(C-y)f Fu(or)f Fo(M-y)p Fu(.)75 -1361 y Fj(1.2.4)30 b(Readline)20 b(Argumen)n(ts)137 1457 -y Fu(Y)l(ou)15 b(can)g(pass)f(n)o(umeric)i(argumen)o(ts)e(to)g -(Readline)i(commands.)k(Sometimes)15 b(the)g(argumen)o(t)e(acts)75 -1511 y(as)20 b(a)f(rep)q(eat)i(coun)o(t,)f(other)g(times)g(it)h(is)f -(the)g Fl(sign)j Fu(of)c(the)h(argumen)o(t)g(that)f(is)i(signi\014can)o -(t.)35 b(If)20 b(y)o(ou)75 1566 y(pass)d(a)f(negativ)o(e)h(argumen)o(t) 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b(an)f(argumen)o(t)g(of)g(10,)h(y)o(ou)f -(could)i(t)o(yp)q(e)f(`)p Ft(M-1)14 b(0)h(C-d)p Fu(',)k(whic)o(h)g -(will)h(delete)g(the)f(next)g(ten)75 2016 y(c)o(haracters)14 -b(on)i(the)f(input)h(line.)75 2125 y Fj(1.2.5)30 b(Searc)n(hing)21 -b(for)f(Commands)h(in)f(the)h(History)137 2220 y Fu(Readline)e(pro)o -(vides)d(commands)g(for)g(searc)o(hing)g(through)g(the)g(command)g -(history)g(for)g(lines)i(con-)75 2275 y(taining)e(a)f(sp)q(eci\014ed)i -(string.)j(There)c(are)e(t)o(w)o(o)g(searc)o(h)h(mo)q(des:)20 -b Fk(incremen)o(tal)e Fu(and)e Fk(non-incremen)o(tal)p -Fu(.)137 2341 y(Incremen)o(tal)e(searc)o(hes)f(b)q(egin)h(b)q(efore)f -(the)g(user)g(has)g(\014nished)h(t)o(yping)f(the)g(searc)o(h)g(string.) -19 b(As)13 b(eac)o(h)75 2396 y(c)o(haracter)k(of)g(the)h(searc)o(h)g -(string)f(is)h(t)o(yp)q(ed,)h(Readline)h(displa)o(ys)e(the)g(next)g(en) -o(try)f(from)g(the)h(history)75 2451 y(matc)o(hing)12 -b(the)g(string)g(t)o(yp)q(ed)g(so)g(far.)18 b(An)13 b(incremen)o(tal)g 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-(and)g(restore)g(the)75 204 y(original)16 b(line.)21 -b(When)15 b(the)f(searc)o(h)g(is)h(terminated,)g(the)f(history)h(en)o -(try)f(con)o(taining)h(the)g(searc)o(h)f(string)75 259 -y(b)q(ecomes)i(the)f(curren)o(t)g(line.)137 334 y(T)l(o)g(\014nd)i -(other)e(matc)o(hing)g(en)o(tries)h(in)h(the)e(history)h(list,)g(t)o -(yp)q(e)f Fo(C-r)g Fu(or)g Fo(C-s)g Fu(as)h(appropriate.)k(This)75 -388 y(will)15 b(searc)o(h)e(bac)o(kw)o(ard)f(or)g(forw)o(ard)g(in)i -(the)f(history)g(for)g(the)g(next)g(en)o(try)g(matc)o(hing)g(the)g -(searc)o(h)g(string)75 443 y(t)o(yp)q(ed)19 b(so)g(far.)30 -b(An)o(y)19 b(other)f(k)o(ey)h(sequence)h(b)q(ound)g(to)e(a)h(Readline) -i(command)d(will)j(terminate)e(the)75 498 y(searc)o(h)10 -b(and)h(execute)g(that)f(command.)18 b(F)l(or)10 b(instance,)i(a)1063 -496 y Fn(h)p 1076 470 76 2 v 1076 498 a Fm(RET)p 1076 -506 V 1149 496 a Fn(i)1174 498 y Fu(will)g(terminate)f(the)g(searc)o(h) -f(and)h(accept)75 553 y(the)k(line,)h(thereb)o(y)f(executing)g(the)g 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b(Blank)18 -b(lines)g(are)75 1805 y(ignored.)36 b(Lines)22 b(b)q(eginning)h(with)d -(a)h(`)p Ft(#)p Fu(')e(are)h(commen)o(ts.)35 b(Lines)22 -b(b)q(eginning)h(with)e(a)f(`)p Ft($)p Fu(')f(indicate)75 -1860 y(conditional)c(constructs)f(\(see)g(Section)g(1.3.2)f -([Conditional)h(Init)h(Constructs],)e(page)h(8\).)k(Other)c(lines)75 -1915 y(denote)h(v)m(ariable)i(settings)e(and)h(k)o(ey)f(bindings.)75 -2006 y(V)l(ariable)h(Settings)315 2060 y(Y)l(ou)k(can)h(mo)q(dify)g -(the)f(run-time)h(b)q(eha)o(vior)g(of)e(Readline)k(b)o(y)d(altering)h -(the)f(v)m(alues)h(of)315 2115 y(v)m(ariables)13 b(in)g(Readline)i -(using)d(the)g Ft(set)g Fu(command)g(within)h(the)f(init)h(\014le.)20 -b(Here)13 b(is)f(ho)o(w)g(to)315 2170 y(c)o(hange)e(from)g(the)g -(default)h(Emacs-lik)o(e)g(k)o(ey)f(binding)i(to)e(use)g -Ft(vi)g Fu(line)i(editing)g(commands:)435 2238 y Ft(set)23 -b(editing-mode)g(vi)315 2309 y Fu(A)15 b(great)g(deal)g(of)g(run-time)h 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Ft(convert-meta)555 -990 y Fu(If)11 b(set)g(to)g(`)p Ft(on)p Fu(',)f(Readline)j(will)g(con)o -(v)o(ert)d(c)o(haracters)h(with)g(the)g(eigh)o(th)h(bit)f(set)555 -1044 y(to)f(an)h Fp(asci)q(i)e Fu(k)o(ey)i(sequence)g(b)o(y)g -(stripping)h(the)e(eigh)o(th)h(bit)h(and)e(pre\014xing)i(an)555 -1097 y Fn(h)p 567 1071 70 2 v 567 1099 a Fm(ESC)p 567 -1107 V 634 1097 a Fn(i)666 1099 y Fu(c)o(haracter,)k(con)o(v)o(erting)h -(them)g(to)f(a)h(meta-pre\014xed)g(k)o(ey)g(sequence.)555 -1154 y(The)e(default)h(v)m(alue)h(is)e(`)p Ft(on)p Fu('.)315 -1233 y Ft(disable-completion)555 1288 y Fu(If)k(set)f(to)f(`)p -Ft(On)p Fu(',)h(Readline)j(will)f(inhibit)g(w)o(ord)e(completion.)30 -b(Completion)555 1343 y(c)o(haracters)12 b(will)j(b)q(e)f(inserted)g -(in)o(to)f(the)g(line)h(as)f(if)h(they)f(had)g(b)q(een)h(mapp)q(ed)555 -1398 y(to)h Ft(self-insert)p Fu(.)j(The)d(default)h(is)g(`)p -Ft(off)p Fu('.)315 1477 y Ft(editing-mode)555 1531 y -Fu(The)f Ft(editing-mode)d Fu(v)m(ariable)k(con)o(trols)e(whic)o(h)h -(default)g(set)f(of)g(k)o(ey)g(bind-)555 1586 y(ings)f(is)g(used.)20 -b(By)12 b(default,)i(Readline)g(starts)e(up)h(in)g(Emacs)f(editing)i -(mo)q(de,)555 1641 y(where)h(the)f(k)o(eystrok)o(es)g(are)g(most)g -(similar)i(to)d(Emacs.)20 b(This)15 b(v)m(ariable)h(can)555 -1696 y(b)q(e)g(set)f(to)f(either)i(`)p Ft(emacs)p Fu(')e(or)h(`)p -Ft(vi)p Fu('.)315 1775 y Ft(enable-keypad)555 1830 y -Fu(When)d(set)f(to)h(`)p Ft(on)p Fu(',)e(Readline)k(will)g(try)d(to)g -(enable)i(the)f(application)h(k)o(eypad)555 1885 y(when)h(it)f(is)h -(called.)21 b(Some)13 b(systems)g(need)h(this)g(to)f(enable)h(the)g -(arro)o(w)e(k)o(eys.)555 1939 y(The)j(default)h(is)g(`)p -Ft(off)p Fu('.)315 2019 y Ft(expand-tilde)555 2073 y -Fu(If)e(set)g(to)f(`)p Ft(on)p Fu(',)f(tilde)k(expansion)e(is)h(p)q -(erformed)f(when)g(Readline)i(attempts)555 2128 y(w)o(ord)f -(completion.)21 b(The)15 b(default)h(is)f(`)p Ft(off)p -Fu('.)315 2207 y Ft(horizontal-scroll-mode)555 2262 y -Fu(This)k(v)m(ariable)g(can)f(b)q(e)g(set)g(to)f(either)i(`)p -Ft(on)p Fu(')e(or)g(`)p Ft(off)p Fu('.)27 b(Setting)19 -b(it)f(to)f(`)p Ft(on)p Fu(')555 2317 y(means)c(that)f(the)i(text)e(of) -h(the)g(lines)i(b)q(eing)f(edited)g(will)h(scroll)f(horizon)o(tally)555 -2372 y(on)i(a)f(single)i(screen)g(line)g(when)g(they)f(are)f(longer)h -(than)g(the)g(width)g(of)g(the)555 2426 y(screen,)e(instead)f(of)g -(wrapping)g(on)o(to)f(a)h(new)g(screen)h(line.)21 b(By)13 -b(default,)h(this)555 2481 y(v)m(ariable)j(is)e(set)g(to)g(`)p -Ft(off)p Fu('.)315 2560 y Ft(input-meta)555 2615 y Fu(If)h(set)f(to)g -(`)p Ft(on)p Fu(',)f(Readline)k(will)g(enable)e(eigh)o(t-bit)h(input)f -(\(it)g(will)h(not)e(clear)555 2670 y(the)20 b(eigh)o(th)g(bit)g(in)h -(the)f(c)o(haracters)f(it)h(reads\),)g(regardless)g(of)g(what)f(the)p -eop -%%Page: 6 8 -6 7 bop 75 -58 a Fu(6)1322 b(GNU)15 b(Readline)i(Library)555 -149 y(terminal)k(claims)g(it)f(can)g(supp)q(ort.)34 b(The)20 -b(default)h(v)m(alue)g(is)g(`)p Ft(off)p 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Fu(,)g Ft(vi)p Fu(,)h Ft(vi-move)p -Fu(,)f Ft(vi-command)p Fu(,)g(and)555 813 y Ft(vi-insert)p -Fu(.)31 b Ft(vi)20 b Fu(is)g(equiv)m(alen)o(t)h(to)e -Ft(vi-command)p Fu(;)g Ft(emacs)g Fu(is)h(equiv)m(alen)o(t)555 -868 y(to)15 b Ft(emacs-standard)p Fu(.)20 b(The)d(default)f(v)m(alue)h -(is)g Ft(emacs)p Fu(.)k(The)16 b(v)m(alue)h(of)f(the)555 -923 y Ft(editing-mode)e Fu(v)m(ariable)i(also)f(a\013ects)g(the)g -(default)h(k)o(eymap.)315 1008 y Ft(mark-directories)555 -1063 y Fu(If)j(set)g(to)g(`)p Ft(on)p Fu(',)f(completed)i(directory)g -(names)f(ha)o(v)o(e)f(a)h(slash)h(app)q(ended.)555 1117 -y(The)15 b(default)h(is)g(`)p Ft(on)p Fu('.)315 1203 -y Ft(mark-modified-lines)555 1258 y Fu(This)j(v)m(ariable,)g(when)g -(set)e(to)h(`)p Ft(on)p Fu(',)f(causes)h(Readline)i(to)d(displa)o(y)i -(an)f(as-)555 1312 y(terisk)f(\(`)p Ft(*)p Fu('\))e(at)i(the)f(start)g -(of)h(history)f(lines)j(whic)o(h)e(ha)o(v)o(e)g(b)q(een)h(mo)q -(di\014ed.)555 1367 y(This)e(v)m(ariable)g(is)g(`)p Ft(off)p -Fu(')e(b)o(y)h(default.)315 1452 y Ft(output-meta)555 -1507 y Fu(If)j(set)f(to)g(`)p Ft(on)p Fu(',)g(Readline)j(will)g(displa) -o(y)f(c)o(haracters)d(with)j(the)e(eigh)o(th)h(bit)555 -1562 y(set)g(directly)i(rather)d(than)h(as)g(a)g(meta-pre\014xed)h -(escap)q(e)g(sequence.)30 b(The)555 1617 y(default)16 -b(is)f(`)p Ft(off)p Fu('.)315 1702 y Ft(print-completions-horizont)o -(ally)555 1757 y Fu(If)d(set)g(to)f(`)p Ft(on)p Fu(',)h(Readline)i -(will)f(displa)o(y)h(completions)f(with)f(matc)o(hes)f(sorted)555 -1812 y(horizon)o(tally)23 b(in)f(alphab)q(etical)i(order,)f(rather)e -(than)g(do)o(wn)h(the)g(screen.)555 1866 y(The)15 b(default)h(is)g(`)p -Ft(off)p Fu('.)315 1952 y Ft(show-all-if-ambiguous)555 -2006 y Fu(This)g(alters)e(the)i(default)f(b)q(eha)o(vior)h(of)e(the)h -(completion)h(functions.)21 b(If)15 b(set)555 2061 y(to)e(`)p -Ft(on)p Fu(',)g(w)o(ords)g(whic)o(h)h(ha)o(v)o(e)g(more)f(than)g(one)h -(p)q(ossible)i(completion)f(cause)555 2116 y(the)20 b(matc)o(hes)f(to)f -(b)q(e)j(listed)f(immediately)h(instead)f(of)f(ringing)i(the)e(b)q -(ell.)555 2171 y(The)c(default)h(v)m(alue)h(is)e(`)p -Ft(off)p Fu('.)315 2256 y Ft(visible-stats)555 2311 y -Fu(If)h(set)g(to)f(`)p Ft(on)p Fu(',)g(a)h(c)o(haracter)f(denoting)h(a) -g(\014le's)h(t)o(yp)q(e)f(is)g(app)q(ended)i(to)d(the)555 -2366 y(\014lename)h(when)g(listing)h(p)q(ossible)g(completions.)j(The)c -(default)g(is)f(`)p Ft(off)p Fu('.)75 2451 y(Key)h(Bindings)315 -2506 y(The)21 b(syn)o(tax)f(for)h(con)o(trolling)h(k)o(ey)f(bindings)h -(in)g(the)f(init)h(\014le)g(is)g(simple.)39 b(First)20 -b(y)o(ou)315 2560 y(need)15 b(to)e(\014nd)h(the)g(name)g(of)g(the)f -(command)h(that)f(y)o(ou)h(w)o(an)o(t)f(to)g(c)o(hange.)19 -b(The)14 b(follo)o(wing)315 2615 y(sections)k(con)o(tain)h(tables)f(of) -f(the)h(command)g(name,)g(the)g(default)h(k)o(eybinding,)h(if)e(an)o(y) -l(,)315 2670 y(and)d(a)g(short)g(description)i(of)d(what)h(the)g -(command)g(do)q(es.)p eop -%%Page: 7 9 -7 8 bop 75 -58 a Fu(Chapter)15 b(1:)k(Command)c(Line)i(Editing)1077 -b(7)315 149 y(Once)19 b(y)o(ou)f(kno)o(w)f(the)h(name)g(of)g(the)g -(command,)g(simply)h(place)g(on)f(a)f(line)j(in)f(the)f(init)315 -204 y(\014le)g(the)f(name)g(of)f(the)h(k)o(ey)g(y)o(ou)f(wish)i(to)e -(bind)i(the)f(command)g(to,)f(a)g(colon,)i(and)f(then)315 -259 y(the)f(name)g(of)g(the)g(command.)22 b(The)16 b(name)g(of)g(the)g -(k)o(ey)f(can)i(b)q(e)f(expressed)h(in)g(di\013eren)o(t)315 -314 y(w)o(a)o(ys,)d(dep)q(ending)j(on)e(what)g(y)o(ou)g(\014nd)h(most)e -(comfortable.)315 392 y Fk(k)o(eyname)s Fu(:)19 b Fk(function-name)g -Fu(or)c Fk(macro)555 447 y(k)o(eyname)i Fu(is)e(the)f(name)h(of)f(a)g -(k)o(ey)g(sp)q(elled)j(out)d(in)h(English.)21 b(F)l(or)13 -b(example:)675 511 y Ft(Control-u:)22 b(universal-argument)675 -563 y(Meta-Rubout:)g(backward-kill-word)675 615 y(Control-o:)g(">)i -(output")555 682 y Fu(In)c(the)f(ab)q(o)o(v)o(e)g(example,)i -Fo(C-u)e Fu(is)h(b)q(ound)g(to)f(the)g(function)h Ft(universal-)555 -736 y(argument)p Fu(,)e Fo(M-DEL)h Fu(is)g(b)q(ound)h(to)e(the)h -(function)h Ft(backward-kill-word)p Fu(,)555 791 y(and)g -Fo(C-o)f Fu(is)h(b)q(ound)g(to)f(run)h(the)f(macro)g(expressed)h(on)g -(the)f(righ)o(t)h(hand)555 846 y(side)c(\(that)e(is,)i(to)e(insert)i -(the)f(text)g(`)p Ft(>)f(output)p Fu(')g(in)o(to)i(the)f(line\).)555 -913 y(A)k(n)o(um)o(b)q(er)f(of)g(sym)o(b)q(olic)i(c)o(haracter)e(names) -g(are)g(recognized)i(while)g(pro-)555 968 y(cessing)13 -b(this)f(k)o(ey)g(binding)h(syn)o(tax:)18 b Fk(DEL)p -Fu(,)11 b Fk(ESC)p Fu(,)h Fk(ESCAPE)p Fu(,)f Fk(LFD)p -Fu(,)g Fk(NEW-)555 1022 y(LINE)p Fu(,)16 b Fk(RET)p Fu(,)f -Fk(RETURN)p Fu(,)g Fk(R)o(UBOUT)p Fu(,)h Fk(SP)l(A)o(CE)p -Fu(,)f Fk(SPC)p Fu(,)f(and)i Fk(T)l(AB)p Fu(.)315 1101 -y Ft(")p Fk(k)o(eyseq)q Ft(")p Fu(:)k Fk(function-name)e -Fu(or)d Fk(macro)555 1156 y(k)o(eyseq)i Fu(di\013ers)e(from)g -Fk(k)o(eyname)j Fu(ab)q(o)o(v)o(e)d(in)i(that)d(strings)i(denoting)g -(an)f(en-)555 1211 y(tire)i(k)o(ey)g(sequence)h(can)f(b)q(e)g(sp)q -(eci\014ed,)i(b)o(y)e(placing)h(the)f(k)o(ey)g(sequence)h(in)555 -1265 y(double)e(quotes.)j(Some)c Fp(gnu)g Fu(Emacs)f(st)o(yle)h(k)o(ey) -g(escap)q(es)g(can)g(b)q(e)g(used,)g(as)555 1320 y(in)j(the)f(follo)o -(wing)g(example,)h(but)f(the)g(sp)q(ecial)i(c)o(haracter)d(names)h(are) -f(not)555 1375 y(recognized.)675 1439 y Ft("\\C-u":)23 -b(universal-argument)675 1491 y("\\C-x\\C-r":)f(re-read-init-file)675 -1543 y("\\e[11~":)h("Function)f(Key)i(1")555 1609 y Fu(In)33 -b(the)f(ab)q(o)o(v)o(e)g(example,)37 b Fo(C-u)32 b Fu(is)h(again)f(b)q -(ound)h(to)f(the)g(function)555 1664 y Ft(universal-argument)19 -b Fu(\(just)j(as)f(it)h(w)o(as)f(in)i(the)f(\014rst)f(example\),)j(`)p -Fo(C-x)555 1719 y(C-r)p Fu(')c(is)h(b)q(ound)g(to)f(the)h(function)g -Ft(re-read-init-file)p Fu(,)f(and)g(`)1731 1717 y Fn(h)p -1743 1691 70 2 v 1743 1719 a Fm(ESC)p 1743 1727 V 1810 -1717 a Fn(i)15 b(h)p 1852 1691 10 2 v 1852 1719 a Fm([)p -1852 1727 V 1860 1717 a Fn(i)555 1772 y(h)p 567 1746 -18 2 v 567 1774 a Fm(1)p 567 1781 V 583 1772 a Fn(i)g(h)p -625 1746 V 625 1774 a Fm(1)p 625 1781 V 640 1772 a Fn(i)g(h)p -683 1746 24 2 v 683 1774 a Ft(~)p 683 1781 V 704 1772 -a Fn(i)719 1774 y Fu(')g(is)h(b)q(ound)g(to)e(insert)i(the)f(text)g(`)p -Ft(Function)f(Key)g(1)p Fu('.)315 1852 y(The)h(follo)o(wing)h -Fp(gnu)e Fu(Emacs)h(st)o(yle)g(escap)q(e)h(sequences)g(are)e(a)o(v)m -(ailable)j(when)e(sp)q(ecifying)315 1907 y(k)o(ey)g(sequences:)315 -1986 y Fo(\\C-)168 b Fu(con)o(trol)15 b(pre\014x)315 -2064 y Fo(\\M-)168 b Fu(meta)15 b(pre\014x)315 2143 y -Fo(\\e)192 b Fu(an)15 b(escap)q(e)h(c)o(haracter)315 -2222 y Fo(\\\\)192 b Fu(bac)o(kslash)315 2301 y Fo(\\)p -Ft(")555 2299 y Fn(h)p 567 2272 V 567 2301 a Ft(")p 567 -2308 V 589 2299 a Fn(i)604 2301 y Fu(,)15 b(a)f(double)j(quotation)e -(mark)315 2379 y Fo(\\')555 2377 y Fn(h)p 567 2351 10 -2 v 567 2379 a Fm(')p 567 2387 V 575 2377 a Fn(i)590 -2379 y Fu(,)g(a)f(single)j(quote)e(or)g(ap)q(ostrophe)315 -2458 y(In)f(addition)h(to)f(the)f Fp(gnu)h 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-(double)i(quotes)f(m)o(ust)f(b)q(e)h(used)h(to)315 908 -y(indicate)12 b(a)f(macro)f(de\014nition.)20 b(Unquoted)11 -b(text)f(is)i(assumed)e(to)h(b)q(e)g(a)f(function)i(name.)18 -b(In)315 963 y(the)11 b(macro)f(b)q(o)q(dy)l(,)i(the)f(bac)o(kslash)g -(escap)q(es)g(describ)q(ed)i(ab)q(o)o(v)o(e)d(are)g(expanded.)20 -b(Bac)o(kslash)315 1018 y(will)i(quote)d(an)o(y)h(other)g(c)o(haracter) -f(in)i(the)f(macro)f(text,)h(including)j(`)p Ft(")p Fu(')c(and)h(`)p -Ft(')p Fu('.)34 b(F)l(or)315 1073 y(example,)14 b(the)f(follo)o(wing)g -(binding)i(will)g(mak)o(e)d(`)p Fo(C-x)i Ft(\\)p Fu(')f(insert)g(a)g -(single)h(`)p Ft(\\)p Fu(')e(in)o(to)h(the)g(line:)435 -1134 y Ft("\\C-x\\\\":)23 b("\\\\")75 1238 y Fj(1.3.2)30 -b(Conditional)20 b(Init)g(Constructs)137 1332 y Fu(Readline)g(implemen) -o(ts)f(a)f(facilit)o(y)g(similar)h(in)g(spirit)f(to)f(the)h -(conditional)h(compilation)g(features)75 1387 y(of)e(the)g(C)g(prepro)q -(cessor)g(whic)o(h)i(allo)o(ws)e(k)o(ey)g(bindings)i(and)f(v)m(ariable) 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b(program)f(using)j(the)e(Readline)j -(library)e(sets)f(the)g Fk(application)555 2506 y(name)p -Fu(,)17 b(and)f(y)o(ou)h(can)f(test)g(for)g(it.)24 b(This)18 -b(could)f(b)q(e)g(used)g(to)f(bind)i(k)o(ey)f(se-)555 -2560 y(quences)c(to)e(functions)i(useful)g(for)e(a)h(sp)q(eci\014c)i -(program.)j(F)l(or)12 b(instance,)h(the)555 2615 y(follo)o(wing)i -(command)f(adds)g(a)f(k)o(ey)h(sequence)h(that)f(quotes)f(the)i(curren) -o(t)e(or)555 2670 y(previous)j(w)o(ord)e(in)i(Bash:)p -eop -%%Page: 9 11 -9 10 bop 75 -58 a Fu(Chapter)15 b(1:)k(Command)c(Line)i(Editing)1077 -b(9)675 149 y Ft($if)23 b(Bash)675 201 y(#)h(Quote)f(the)g(current)g -(or)h(previous)f(word)675 253 y("\\C-xq":)g("\\eb\\"\\ef\\"")675 -305 y($endif)75 385 y($endif)96 b Fu(This)16 b(command,)e(as)h(seen)h -(in)g(the)f(previous)h(example,)g(terminates)f(an)g Ft($if)f -Fu(command.)75 465 y Ft($else)120 b Fu(Commands)15 b(in)h(this)f(branc) -o(h)h(of)e(the)i Ft($if)e Fu(directiv)o(e)j(are)e(executed)h(if)g(the)f -(test)g(fails.)75 544 y Ft($include)48 b Fu(This)14 b(directiv)o(e)i -(tak)o(es)d(a)g(single)i(\014lename)g(as)f(an)f(argumen)o(t)g(and)h -(reads)g(commands)g(and)315 599 y(bindings)j(from)e(that)f(\014le.)435 -663 y Ft($include)23 b(/etc/inputrc)75 775 y Fj(1.3.3)30 -b(Sample)20 b(Init)h(File)137 872 y Fu(Here)16 b(is)g(an)f(example)h -(of)f(an)g Fk(inputrc)k Fu(\014le.)i(This)16 b(illustrates)g(k)o(ey)f -(binding,)i(v)m(ariable)f(assignmen)o(t,)75 927 y(and)f(conditional)i -(syn)o(tax.)p eop -%%Page: 10 12 -10 11 bop 75 -58 a Fu(10)1299 b(GNU)15 b(Readline)i(Library)195 -201 y Ft(#)24 b(This)f(file)g(controls)g(the)h(behaviour)e(of)i(line)f -(input)g(editing)g(for)195 253 y(#)h(programs)e(that)i(use)f(the)h(Gnu) -f(Readline)g(library.)47 b(Existing)22 b(programs)195 -305 y(#)i(include)f(FTP,)g(Bash,)g(and)h(Gdb.)195 357 -y(#)195 409 y(#)g(You)f(can)h(re-read)f(the)g(inputrc)g(file)g(with)h -(C-x)f(C-r.)195 461 y(#)h(Lines)f(beginning)g(with)g('#')g(are)h -(comments.)195 513 y(#)195 565 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-1962 y Ft(yank-nth-arg)e(\(M-C-y\))315 2017 y Fu(Insert)f(the)g -(\014rst)g(argumen)o(t)f(to)g(the)i(previous)f(command)g(\(usually)h -(the)f(second)h(w)o(ord)e(on)315 2071 y(the)i(previous)i(line\).)21 -b(With)14 b(an)h(argumen)o(t)e Fk(n)p Fu(,)i(insert)f(the)h -Fk(n)p Fu(th)f(w)o(ord)g(from)g(the)g(previous)315 2126 -y(command)f(\(the)h(w)o(ords)f(in)h(the)g(previous)g(command)g(b)q -(egin)h(with)f(w)o(ord)e(0\).)19 b(A)14 b(negativ)o(e)315 -2181 y(argumen)o(t)g(inserts)i(the)f Fk(n)p Fu(th)h(w)o(ord)e(from)h -(the)g(end)h(of)e(the)i(previous)g(command.)75 2284 y -Ft(yank-last-arg)d(\(M-.)i(or)g(M-_\))315 2339 y Fu(Insert)j(last)f -(argumen)o(t)g(to)g(the)g(previous)i(command)e(\(the)g(last)h(w)o(ord)f -(of)g(the)g(previous)315 2394 y(history)e(en)o(try\).)20 -b(With)15 b(an)g(argumen)o(t,)g(b)q(eha)o(v)o(e)g(exactly)h(lik)o(e)g -Ft(yank-nth-arg)p Fu(.)j(Succes-)315 2449 y(siv)o(e)f(calls)g(to)f -Ft(yank-last-arg)e Fu(mo)o(v)o(e)i(bac)o(k)g(through)g(the)g(history)g -(list,)i(inserting)f(the)315 2503 y(last)d(argumen)o(t)g(of)f(eac)o(h)i -(line)g(in)g(turn.)75 2630 y Fj(1.4.3)30 b(Commands)21 -b(F)-5 b(or)19 b(Changing)i(T)-5 b(ext)p eop -%%Page: 14 16 -14 15 bop 75 -58 a Fu(14)1299 b(GNU)15 b(Readline)i(Library)75 -149 y Ft(delete-char)d(\(C-d\))315 204 y Fu(Delete)j(the)f(c)o -(haracter)g(under)h(the)f(cursor.)23 b(If)16 b(the)h(cursor)f(is)h(at)e -(the)i(b)q(eginning)h(of)e(the)315 259 y(line,)j(there)e(are)g(no)g(c)o -(haracters)f(in)i(the)g(line,)h(and)e(the)g(last)g(c)o(haracter)g(t)o -(yp)q(ed)g(w)o(as)f(not)315 314 y(b)q(ound)g(to)f Ft(delete-char)p -Fu(,)e(then)j(return)f Fp(eof)p Fu(.)75 406 y Ft(backward-delete-char)d -(\(Rubout\))315 460 y Fu(Delete)k(the)f(c)o(haracter)f(b)q(ehind)j(the) -f(cursor.)j(A)c(n)o(umeric)h(argumen)o(t)e(means)i(to)e(kill)j(the)315 -515 y(c)o(haracters)d(instead)i(of)f(deleting)i(them.)75 -607 y Ft(forward-backward-delete-ch)o(ar)12 b(\(\))315 -662 y Fu(Delete)20 b(the)f(c)o(haracter)f(under)i(the)f(cursor,)h -(unless)g(the)f(cursor)g(is)h(at)e(the)h(end)h(of)f(the)315 -717 y(line,)e(in)g(whic)o(h)g(case)e(the)h(c)o(haracter)g(b)q(ehind)h -(the)f(cursor)g(is)g(deleted.)23 b(By)16 b(default,)h(this)315 -771 y(is)f(not)f(b)q(ound)h(to)e(a)h(k)o(ey)l(.)75 863 -y Ft(quoted-insert)e(\(C-q)i(or)g(C-v\))315 918 y Fu(Add)j(the)f(next)g -(c)o(haracter)g(t)o(yp)q(ed)g(to)f(the)i(line)g(v)o(erbatim.)26 -b(This)18 b(is)f(ho)o(w)g(to)g(insert)g(k)o(ey)315 973 -y(sequences)f(lik)o(e)h Fo(C-q)p Fu(,)d(for)h(example.)75 -1065 y Ft(tab-insert)f(\(M-)401 1063 y Fn(h)p 412 1037 -74 2 v 412 1065 a Fm(T)m(AB)p 412 1072 V 484 1063 a Fn(i)499 -1065 y Ft(\))315 1119 y Fu(Insert)h(a)g(tab)g(c)o(haracter.)75 -1211 y Ft(self-insert)f(\(a,)g(b,)h(A,)g(1,)g(!,)g(...)o(\))315 -1266 y Fu(Insert)g(y)o(ourself.)75 1358 y Ft(transpose-chars)e(\(C-t\)) -315 1413 y Fu(Drag)i(the)h(c)o(haracter)f(b)q(efore)h(the)h(cursor)e -(forw)o(ard)g(o)o(v)o(er)g(the)h(c)o(haracter)f(at)h(the)g(cursor,)315 -1467 y(mo)o(ving)i(the)f(cursor)h(forw)o(ard)e(as)i(w)o(ell.)28 -b(If)18 b(the)g(insertion)h(p)q(oin)o(t)f(is)g(at)f(the)h(end)h(of)e -(the)315 1522 y(line,)c(then)e(this)h(transp)q(oses)e(the)h(last)g(t)o -(w)o(o)f(c)o(haracters)g(of)h(the)g(line.)20 b(Negativ)o(e)11 -b(argumen)o(ts)315 1577 y(ha)o(v)o(e)k(no)g(e\013ect.)75 -1669 y Ft(transpose-words)e(\(M-t\))315 1724 y Fu(Drag)i(the)h(w)o(ord) -g(b)q(efore)g(p)q(oin)o(t)h(past)f(the)g(w)o(ord)f(after)h(p)q(oin)o -(t,)g(mo)o(ving)g(p)q(oin)o(t)h(past)f(that)315 1778 -y(w)o(ord)f(as)f(w)o(ell.)75 1870 y Ft(upcase-word)g(\(M-u\))315 -1925 y Fu(Upp)q(ercase)j(the)f(curren)o(t)g(\(or)f(follo)o(wing\))h(w)o -(ord.)22 b(With)16 b(a)g(negativ)o(e)g(argumen)o(t,)f(upp)q(er-)315 -1980 y(case)g(the)g(previous)h(w)o(ord,)f(but)g(do)g(not)g(mo)o(v)o(e)f -(the)i(cursor.)75 2072 y Ft(downcase-word)d(\(M-l\))315 -2126 y Fu(Lo)o(w)o(ercase)d(the)h(curren)o(t)g(\(or)f(follo)o(wing\))h -(w)o(ord.)17 b(With)11 b(a)g(negativ)o(e)g(argumen)o(t,)f(lo)o(w)o -(ercase)315 2181 y(the)15 b(previous)h(w)o(ord,)e(but)i(do)f(not)g(mo)o -(v)o(e)f(the)h(cursor.)75 2273 y Ft(capitalize-word)e(\(M-c\))315 -2328 y Fu(Capitalize)f(the)f(curren)o(t)f(\(or)g(follo)o(wing\))h(w)o -(ord.)18 b(With)11 b(a)f(negativ)o(e)h(argumen)o(t,)f(capitalize)315 -2383 y(the)15 b(previous)h(w)o(ord,)e(but)i(do)f(not)g(mo)o(v)o(e)f -(the)h(cursor.)75 2494 y Fj(1.4.4)30 b(Killing)20 b(And)h(Y)-5 -b(anking)75 2615 y Ft(kill-line)14 b(\(C-k\))315 2670 -y Fu(Kill)j(the)f(text)e(from)h(p)q(oin)o(t)h(to)e(the)h(end)h(of)f -(the)g(line.)p eop -%%Page: 15 17 -15 16 bop 75 -58 a Fu(Chapter)15 b(1:)k(Command)c(Line)i(Editing)1055 -b(15)75 149 y Ft(backward-kill-line)13 b(\(C-x)h(Rubout\))315 -204 y Fu(Kill)j(bac)o(kw)o(ard)e(to)f(the)i(b)q(eginning)h(of)e(the)g -(line.)75 295 y Ft(unix-line-discard)e(\(C-u\))315 349 -y Fu(Kill)k(bac)o(kw)o(ard)e(from)f(the)i(cursor)e(to)h(the)g(b)q -(eginning)j(of)c(the)i(curren)o(t)f(line.)75 440 y Ft(kill-whole-line)e -(\(\))315 495 y Fu(Kill)20 b(all)f(c)o(haracters)e(on)h(the)g(curren)o -(t)f(line,)j(no)e(matter)f(p)q(oin)o(t)h(is.)28 b(By)18 -b(default,)h(this)f(is)315 549 y(un)o(b)q(ound.)75 640 -y Ft(kill-word)c(\(M-d\))315 695 y Fu(Kill)j(from)d(p)q(oin)o(t)h(to)f -(the)h(end)g(of)f(the)h(curren)o(t)g(w)o(ord,)e(or)i(if)g(b)q(et)o(w)o -(een)g(w)o(ords,)e(to)i(the)f(end)315 750 y(of)h(the)g(next)g(w)o(ord.) -20 b(W)l(ord)14 b(b)q(oundaries)j(are)e(the)g(same)g(as)g -Ft(forward-word)p Fu(.)75 840 y Ft(backward-kill-word)e(\(M-)592 -838 y Fn(h)p 603 812 73 2 v 603 840 a Fm(DEL)p 603 848 -V 674 838 a Fn(i)689 840 y Ft(\))315 895 y Fu(Kill)k(the)d(w)o(ord)g(b) -q(ehind)i(p)q(oin)o(t.)21 b(W)l(ord)14 b(b)q(oundaries)h(are)f(the)h -(same)f(as)g Ft(backward-word)p Fu(.)75 985 y Ft(unix-word-rubout)f -(\(C-w\))315 1040 y Fu(Kill)18 b(the)e(w)o(ord)f(b)q(ehind)j(p)q(oin)o -(t,)e(using)h(white)f(space)g(as)g(a)f(w)o(ord)g(b)q(oundary)l(.)23 -b(The)16 b(killed)315 1095 y(text)f(is)g(sa)o(v)o(ed)g(on)g(the)h -(kill-ring.)75 1185 y Ft(delete-horizontal-space)c(\(\))315 -1240 y Fu(Delete)k(all)g(spaces)f(and)h(tabs)e(around)i(p)q(oin)o(t.)k -(By)15 b(default,)h(this)f(is)h(un)o(b)q(ound.)75 1330 -y Ft(kill-region)e(\(\))315 1385 y Fu(Kill)j(the)f(text)e(in)i(the)g -(curren)o(t)f(region.)20 b(By)15 b(default,)h(this)f(command)g(is)h(un) -o(b)q(ound.)75 1476 y Ft(copy-region-as-kill)d(\(\))315 -1530 y Fu(Cop)o(y)j(the)i(text)e(in)i(the)f(region)g(to)g(the)g(kill)h -(bu\013er,)f(so)g(it)g(can)g(b)q(e)h(y)o(ank)o(ed)f(righ)o(t)g(a)o(w)o -(a)o(y)l(.)315 1585 y(By)e(default,)h(this)f(command)g(is)h(un)o(b)q -(ound.)75 1676 y Ft(copy-backward-word)d(\(\))315 1730 -y Fu(Cop)o(y)19 b(the)g(w)o(ord)g(b)q(efore)g(p)q(oin)o(t)h(to)e(the)i -(kill)h(bu\013er.)32 b(The)19 b(w)o(ord)g(b)q(oundaries)h(are)f(the)315 -1785 y(same)c(as)g Ft(backward-word)p Fu(.)j(By)d(default,)g(this)h -(command)f(is)h(un)o(b)q(ound.)75 1876 y Ft(copy-forward-word)d(\(\)) -315 1930 y Fu(Cop)o(y)i(the)h(w)o(ord)e(follo)o(wing)j(p)q(oin)o(t)f -(to)f(the)g(kill)j(bu\013er.)i(The)c(w)o(ord)f(b)q(oundaries)i(are)e -(the)315 1985 y(same)g(as)g Ft(forward-word)p Fu(.)j(By)d(default,)h -(this)f(command)g(is)h(un)o(b)q(ound.)75 2076 y Ft(yank)f(\(C-y\))315 -2131 y Fu(Y)l(ank)g(the)h(top)f(of)f(the)i(kill)h(ring)e(in)o(to)g(the) -h(bu\013er)f(at)f(the)i(curren)o(t)f(cursor)g(p)q(osition.)75 -2221 y Ft(yank-pop)f(\(M-y\))315 2276 y Fu(Rotate)j(the)g(kill-ring,)j -(and)d(y)o(ank)g(the)h(new)f(top.)26 b(Y)l(ou)17 b(can)h(only)g(do)f -(this)h(if)f(the)h(prior)315 2331 y(command)d(is)h Ft(yank)e -Fu(or)h Ft(yank-pop)p Fu(.)75 2441 y Fj(1.4.5)30 b(Sp)r(ecifying)20 -b(Numeric)h(Argumen)n(ts)75 2560 y Ft(digit-argument)13 -b(\()p Fo(M-0)p Ft(,)i Fo(M-1)p Ft(,)f(...)h Fo(M--)p -Ft(\))315 2615 y Fu(Add)f(this)g(digit)g(to)f(the)h(argumen)o(t)e -(already)i(accum)o(ulating,)g(or)f(start)f(a)h(new)h(argumen)o(t.)315 -2670 y Fo(M--)h Fu(starts)f(a)h(negativ)o(e)g(argumen)o(t.)p -eop -%%Page: 16 18 -16 17 bop 75 -58 a Fu(16)1299 b(GNU)15 b(Readline)i(Library)75 -149 y Ft(universal-argument)c(\(\))315 204 y Fu(This)g(is)h(another)e -(w)o(a)o(y)g(to)g(sp)q(ecify)i(an)f(argumen)o(t.)18 b(If)13 -b(this)g(command)g(is)g(follo)o(w)o(ed)g(b)o(y)g(one)315 -259 y(or)h(more)h(digits,)g(optionally)h(with)f(a)g(leading)h(min)o(us) -f(sign,)g(those)g(digits)g(de\014ne)h(the)f(ar-)315 314 -y(gumen)o(t.)k(If)c(the)g(command)f(is)h(follo)o(w)o(ed)g(b)o(y)g -(digits,)g(executing)g Ft(universal-argument)315 369 -y Fu(again)h(ends)g(the)g(n)o(umeric)h(argumen)o(t,)e(but)h(is)h -(otherwise)f(ignored.)22 b(As)16 b(a)g(sp)q(ecial)h(case,)315 -423 y(if)g(this)g(command)f(is)h(immediately)h(follo)o(w)o(ed)f(b)o(y)f -(a)g(c)o(haracter)g(that)g(is)h(neither)g(a)f(digit)315 -478 y(or)d(min)o(us)i(sign,)f(the)g(argumen)o(t)g(coun)o(t)f(for)h(the) -g(next)g(command)g(is)g(m)o(ultiplied)j(b)o(y)d(four.)315 -533 y(The)19 b(argumen)o(t)f(coun)o(t)g(is)h(initially)j(one,)d(so)f -(executing)i(this)f(function)h(the)e(\014rst)h(time)315 -588 y(mak)o(es)c(the)h(argumen)o(t)f(coun)o(t)h(four,)f(a)h(second)g -(time)g(mak)o(es)g(the)g(argumen)o(t)f(coun)o(t)g(six-)315 -643 y(teen,)g(and)g(so)g(on.)20 b(By)15 b(default,)h(this)f(is)h(not)f -(b)q(ound)h(to)f(a)g(k)o(ey)l(.)75 745 y Fj(1.4.6)30 -b(Letting)20 b(Readline)g(T)n(yp)r(e)h(F)-5 b(or)19 b(Y)-5 -b(ou)75 857 y Ft(complete)14 b(\()305 855 y Fn(h)p 317 -828 74 2 v 317 857 a Fm(T)m(AB)p 317 864 V 389 855 a -Fn(i)404 857 y Ft(\))315 911 y Fu(A)o(ttempt)c(to)h(p)q(erform)g -(completion)i(on)e(the)g(text)g(b)q(efore)h(p)q(oin)o(t.)19 -b(The)11 b(actual)h(completion)315 966 y(p)q(erformed)j(is)h -(application-sp)q(eci\014)q(c.)23 b(The)15 b(default)h(is)g(\014lename) -g(completion.)75 1049 y Ft(possible-completions)c(\(M-?\))315 -1103 y Fu(List)k(the)f(p)q(ossible)i(completions)f(of)f(the)g(text)g(b) -q(efore)h(the)f(cursor.)75 1186 y Ft(insert-completions)e(\(M-*\))315 -1241 y Fu(Insert)j(all)g(completions)g(of)f(the)g(text)g(b)q(efore)h(p) -q(oin)o(t)f(that)g(w)o(ould)h(ha)o(v)o(e)f(b)q(een)h(generated)315 -1295 y(b)o(y)f Ft(possible-completions)p Fu(.)75 1378 -y Ft(menu-complete)e(\(\))315 1433 y Fu(Similar)g(to)f -Ft(complete)p Fu(,)f(but)h(replaces)h(the)f(w)o(ord)f(to)g(b)q(e)i -(completed)f(with)h(a)e(single)j(matc)o(h)315 1487 y(from)k(the)h(list) -h(of)e(p)q(ossible)j(completions.)32 b(Rep)q(eated)20 -b(execution)g(of)f Ft(menu-complete)315 1542 y Fu(steps)h(through)g -(the)g(list)h(of)f(p)q(ossible)i(completions,)g(inserting)f(eac)o(h)f -(matc)o(h)f(in)i(turn.)315 1597 y(A)o(t)c(the)g(end)h(of)f(the)h(list)g -(of)f(completions,)i(the)e(b)q(ell)j(is)e(rung)f(and)h(the)f(original)i -(text)d(is)315 1652 y(restored.)26 b(An)17 b(argumen)o(t)g(of)g -Fk(n)g Fu(mo)o(v)o(es)g Fk(n)g Fu(p)q(ositions)h(forw)o(ard)e(in)i(the) -g(list)g(of)f(matc)o(hes;)315 1707 y(a)j(negativ)o(e)g(argumen)o(t)f -(ma)o(y)g(b)q(e)i(used)f(to)f(mo)o(v)o(e)h(bac)o(kw)o(ard)f(through)g -(the)h(list.)35 b(This)315 1761 y(command)15 b(is)h(in)o(tended)g(to)f -(b)q(e)h(b)q(ound)g(to)1067 1759 y Fn(h)p 1079 1733 V -1079 1761 a Fm(T)m(AB)p 1079 1769 V 1150 1759 a Fn(i)1165 -1761 y Fu(,)f(but)h(is)f(un)o(b)q(ound)i(b)o(y)e(default.)75 -1844 y Ft(delete-char-or-list)e(\(\))315 1899 y Fu(Deletes)h(the)f(c)o -(haracter)g(under)h(the)g(cursor)f(if)h(not)f(at)g(the)g(b)q(eginning)j -(or)d(end)h(of)f(the)g(line)315 1954 y(\(lik)o(e)i Ft(delete-char)p -Fu(\).)j(If)d(at)f(the)h(end)g(of)f(the)g(line,)i(b)q(eha)o(v)o(es)f -(iden)o(tically)i(to)d Ft(possible-)315 2008 y(completions)p -Fu(.)k(This)e(command)f(is)h(un)o(b)q(ound)g(b)o(y)f(default.)75 -2111 y Fj(1.4.7)30 b(Keyb)r(oard)20 b(Macros)75 2222 -y Ft(start-kbd-macro)13 b(\(C-x)i(\(\))315 2277 y Fu(Begin)h(sa)o(ving) -f(the)h(c)o(haracters)e(t)o(yp)q(ed)i(in)o(to)f(the)g(curren)o(t)g(k)o -(eyb)q(oard)g(macro.)75 2360 y Ft(end-kbd-macro)e(\(C-x)i(\)\))315 -2414 y Fu(Stop)f(sa)o(ving)f(the)h(c)o(haracters)f(t)o(yp)q(ed)h(in)o -(to)f(the)h(curren)o(t)g(k)o(eyb)q(oard)f(macro)g(and)h(sa)o(v)o(e)f -(the)315 2469 y(de\014nition.)75 2552 y Ft(call-last-kbd-macro)g(\(C-x) -h(e\))315 2606 y Fu(Re-execute)19 b(the)f(last)f(k)o(eyb)q(oard)h -(macro)f(de\014ned,)i(b)o(y)e(making)h(the)g(c)o(haracters)e(in)j(the) -315 2661 y(macro)14 b(app)q(ear)i(as)f(if)g(t)o(yp)q(ed)h(at)e(the)i(k) -o(eyb)q(oard.)p eop -%%Page: 17 19 -17 18 bop 75 -58 a Fu(Chapter)15 b(1:)k(Command)c(Line)i(Editing)1055 -b(17)75 149 y Fj(1.4.8)30 b(Some)20 b(Miscellaneous)h(Commands)75 -265 y Ft(re-read-init-file)13 b(\(C-x)h(C-r\))315 320 -y Fu(Read)e(in)f(the)g(con)o(ten)o(ts)g(of)f(the)h Fk(inputrc)k -Fu(\014le,)d(and)g(incorp)q(orate)f(an)o(y)f(bindings)j(or)e(v)m -(ariable)315 374 y(assignmen)o(ts)k(found)h(there.)75 -461 y Ft(abort)e(\(C-g\))315 515 y Fu(Ab)q(ort)f(the)g(curren)o(t)h -(editing)g(command)f(and)h(ring)f(the)h(terminal's)f(b)q(ell)i(\(sub)s -(ject)e(to)g(the)315 570 y(setting)i(of)g Ft(bell-style)p -Fu(\).)75 657 y Ft(do-uppercase-version)d(\(M-a,)j(M-b,)f(M-)p -Fk(x)p Ft(,)h(...\))315 711 y Fu(If)f(the)g(meta\014ed)g(c)o(haracter)f -Fk(x)k Fu(is)d(lo)o(w)o(ercase,)g(run)g(the)g(command)f(that)h(is)g(b)q -(ound)h(to)e(the)315 766 y(corresp)q(onding)j(upp)q(ercase)g(c)o -(haracter.)75 852 y Ft(prefix-meta)e(\()377 850 y Fn(h)p -389 824 70 2 v 389 852 a Fm(ESC)p 389 860 V 456 850 a -Fn(i)471 852 y Ft(\))315 907 y Fu(Mak)o(e)j(the)i(next)f(c)o(haracter)f -(t)o(yp)q(ed)i(b)q(e)g(meta\014ed.)28 b(This)19 b(is)g(for)e(k)o(eyb)q -(oards)h(without)g(a)315 962 y(meta)d(k)o(ey)l(.)20 b(T)o(yping)15 -b(`)694 960 y Fn(h)p 706 934 V 706 962 a Fm(ESC)p 706 -970 V 773 960 a Fn(i)803 962 y Ft(f)p Fu(')g(is)g(equiv)m(alen)o(t)i -(to)e(t)o(yping)g Fo(M-f)p Fu(.)75 1048 y Ft(undo)g(\(C-_)f(or)h(C-x)g -(C-u\))315 1103 y Fu(Incremen)o(tal)h(undo,)f(separately)h(remem)o(b)q -(ered)g(for)e(eac)o(h)h(line.)75 1189 y Ft(revert-line)f(\(M-r\))315 -1244 y Fu(Undo)j(all)g(c)o(hanges)g(made)f(to)g(this)h(line.)26 -b(This)17 b(is)g(lik)o(e)h(executing)f(the)g Ft(undo)f -Fu(command)315 1299 y(enough)g(times)f(to)g(get)f(bac)o(k)h(to)g(the)g -(b)q(eginning.)75 1385 y Ft(tilde-expand)f(\(M-~\))315 -1440 y Fu(P)o(erform)g(tilde)j(expansion)f(on)f(the)g(curren)o(t)g(w)o -(ord.)75 1526 y Ft(set-mark)f(\(C-@\))315 1581 y Fu(Set)g(the)f(mark)g -(to)g(the)h(curren)o(t)g(p)q(oin)o(t.)19 b(If)14 b(a)g(n)o(umeric)g -(argumen)o(t)f(is)h(supplied,)i(the)e(mark)315 1636 y(is)i(set)f(to)f -(that)h(p)q(osition.)75 1722 y Ft(exchange-point-and-mark)d(\(C-x)j -(C-x\))315 1777 y Fu(Sw)o(ap)g(the)h(p)q(oin)o(t)g(with)g(the)g(mark.)k -(The)c(curren)o(t)f(cursor)h(p)q(osition)g(is)g(set)g(to)f(the)g(sa)o -(v)o(ed)315 1832 y(p)q(osition,)h(and)f(the)h(old)f(cursor)g(p)q -(osition)h(is)g(sa)o(v)o(ed)f(as)g(the)g(mark.)75 1918 -y Ft(character-search)e(\(C-]\))315 1973 y Fu(A)f(c)o(haracter)g(is)h -(read)g(and)f(p)q(oin)o(t)h(is)g(mo)o(v)o(ed)f(to)g(the)g(next)h(o)q -(ccurrence)g(of)f(that)g(c)o(haracter.)315 2028 y(A)j(negativ)o(e)h -(coun)o(t)f(searc)o(hes)g(for)f(previous)i(o)q(ccurrences.)75 -2114 y Ft(character-search-backward)c(\(M-C-]\))315 2169 -y Fu(A)22 b(c)o(haracter)g(is)h(read)f(and)h(p)q(oin)o(t)g(is)g(mo)o(v) -o(ed)f(to)g(the)g(previous)h(o)q(ccurrence)h(of)e(that)315 -2223 y(c)o(haracter.)d(A)c(negativ)o(e)h(coun)o(t)f(searc)o(hes)g(for)f -(subsequen)o(t)i(o)q(ccurrences.)75 2310 y Ft(insert-comment)d(\(M-#\)) -315 2365 y Fu(The)19 b(v)m(alue)i(of)e(the)g Ft(comment-begin)e -Fu(v)m(ariable)k(is)f(inserted)g(at)e(the)i(b)q(eginning)h(of)e(the)315 -2419 y(curren)o(t)c(line,)i(and)e(the)g(line)i(is)f(accepted)g(as)e(if) -i(a)f(newline)i(had)f(b)q(een)g(t)o(yp)q(ed.)75 2506 -y Ft(dump-functions)d(\(\))315 2560 y Fu(Prin)o(t)g(all)h(of)f(the)g -(functions)h(and)g(their)g(k)o(ey)f(bindings)i(to)d(the)i(Readline)h -(output)e(stream.)315 2615 y(If)j(a)g(n)o(umeric)g(argumen)o(t)f(is)i -(supplied,)h(the)e(output)f(is)i(formatted)d(in)j(suc)o(h)f(a)g(w)o(a)o -(y)f(that)315 2670 y(it)g(can)h(b)q(e)g(made)f(part)f(of)h(an)g -Fk(inputrc)k Fu(\014le.)i(This)16 b(command)f(is)h(un)o(b)q(ound)g(b)o -(y)f(default.)p eop -%%Page: 18 20 -18 19 bop 75 -58 a Fu(18)1299 b(GNU)15 b(Readline)i(Library)75 -149 y Ft(dump-variables)c(\(\))315 204 y Fu(Prin)o(t)e(all)g(of)f(the)h -(settable)g(v)m(ariables)h(and)f(their)g(v)m(alues)h(to)e(the)h -(Readline)i(output)d(stream.)315 259 y(If)16 b(a)g(n)o(umeric)g -(argumen)o(t)f(is)i(supplied,)h(the)e(output)f(is)i(formatted)d(in)j -(suc)o(h)f(a)g(w)o(a)o(y)f(that)315 314 y(it)g(can)h(b)q(e)g(made)f -(part)f(of)h(an)g Fk(inputrc)k Fu(\014le.)i(This)16 b(command)f(is)h -(un)o(b)q(ound)g(b)o(y)f(default.)75 406 y Ft(dump-macros)f(\(\))315 -461 y Fu(Prin)o(t)j(all)h(of)e(the)h(Readline)i(k)o(ey)e(sequences)h(b) -q(ound)g(to)e(macros)g(and)h(the)g(strings)g(they)315 -516 y(output.)26 b(If)18 b(a)f(n)o(umeric)h(argumen)o(t)f(is)h -(supplied,)i(the)d(output)g(is)h(formatted)e(in)j(suc)o(h)e(a)315 -570 y(w)o(a)o(y)d(that)g(it)i(can)f(b)q(e)g(made)g(part)g(of)f(an)h -Fk(inputrc)k Fu(\014le.)i(This)15 b(command)g(is)h(un)o(b)q(ound)g(b)o -(y)315 625 y(default.)75 754 y Fs(1.5)33 b(Readline)23 -b(vi)h(Mo)r(de)137 850 y Fu(While)13 b(the)f(Readline)j(library)d(do)q -(es)g(not)g(ha)o(v)o(e)f(a)h(full)h(set)f(of)f Ft(vi)g -Fu(editing)j(functions,)f(it)f(do)q(es)g(con)o(tain)75 -905 y(enough)17 b(to)g(allo)o(w)g(simple)h(editing)h(of)d(the)i(line.) -27 b(The)17 b(Readline)i Ft(vi)e Fu(mo)q(de)g(b)q(eha)o(v)o(es)g(as)g -(sp)q(eci\014ed)i(in)75 960 y(the)c Fp(posix)g Fu(1003.2)f(standard.) -137 1027 y(In)h(order)g(to)f(switc)o(h)g(in)o(teractiv)o(ely)i(b)q(et)o -(w)o(een)f Ft(emacs)e Fu(and)i Ft(vi)f Fu(editing)i(mo)q(des,)f(use)f -(the)h(command)75 1082 y Fo(M-C-j)f Fu(\(toggle-editing-mo)q(de\).)21 -b(The)16 b(Readline)h(default)f(is)g Ft(emacs)e Fu(mo)q(de.)137 -1149 y(When)i(y)o(ou)e(en)o(ter)h(a)g(line)i(in)e Ft(vi)g -Fu(mo)q(de,)g(y)o(ou)g(are)f(already)i(placed)g(in)g(`insertion')f(mo)q -(de,)g(as)g(if)g(y)o(ou)75 1204 y(had)e(t)o(yp)q(ed)h(an)f(`)p -Ft(i)p Fu('.)18 b(Pressing)608 1202 y Fn(h)p 620 1176 -70 2 v 620 1204 a Fm(ESC)p 620 1211 V 687 1202 a Fn(i)715 -1204 y Fu(switc)o(hes)13 b(y)o(ou)g(in)o(to)g(`command')f(mo)q(de,)i -(where)f(y)o(ou)g(can)g(edit)h(the)75 1259 y(text)i(of)h(the)g(line)h -(with)g(the)f(standard)f Ft(vi)h Fu(mo)o(v)o(emen)o(t)f(k)o(eys,)g(mo)o -(v)o(e)g(to)h(previous)g(history)g(lines)i(with)75 1313 -y(`)p Ft(k)p Fu(')14 b(and)i(subsequen)o(t)f(lines)i(with)f(`)p -Ft(j)p Fu(',)e(and)h(so)g(forth.)p eop -%%Page: 19 21 -19 20 bop 75 -58 a Fu(Chapter)15 b(2:)k(Programming)c(with)g(GNU)g -(Readline)844 b(19)75 149 y Fq(2)41 b(Programming)28 -b(with)e(GNU)i(Readline)137 267 y Fu(This)16 b(c)o(hapter)f(describ)q -(es)i(the)f(in)o(terface)g(b)q(et)o(w)o(een)f(the)h(GNU)f(Readline)j -(Library)e(and)f(other)g(pro-)75 322 y(grams.)38 b(If)22 -b(y)o(ou)f(are)g(a)g(programmer,)h(and)f(y)o(ou)g(wish)i(to)d(include)k -(the)e(features)f(found)h(in)g(GNU)75 377 y(Readline)16 -b(suc)o(h)e(as)f(completion,)h(line)h(editing,)g(and)f(in)o(teractiv)o -(e)g(history)f(manipulation)i(in)g(y)o(our)d(o)o(wn)75 -432 y(programs,)i(this)h(section)h(is)g(for)e(y)o(ou.)75 -561 y Fs(2.1)33 b(Basic)22 b(Beha)n(vior)137 658 y Fu(Man)o(y)15 -b(programs)f(pro)o(vide)i(a)f(command)g(line)i(in)o(terface,)e(suc)o(h) -h(as)f Ft(mail)p Fu(,)f Ft(ftp)p Fu(,)h(and)g Ft(sh)p -Fu(.)20 b(F)l(or)15 b(suc)o(h)75 713 y(programs,)e(the)h(default)h(b)q -(eha)o(viour)g(of)f(Readline)j(is)d(su\016cien)o(t.)21 -b(This)14 b(section)h(describ)q(es)h(ho)o(w)e(to)g(use)75 -768 y(Readline)19 b(in)g(the)e(simplest)h(w)o(a)o(y)e(p)q(ossible,)j(p) -q(erhaps)f(to)f(replace)h(calls)g(in)g(y)o(our)f(co)q(de)h(to)e -Ft(gets\(\))g Fu(or)75 822 y Ft(fgets\(\))p Fu(.)195 -887 y Ft(char)23 b(*readline)g(\(const)g(char)g(*)p Fk(prompt)q -Ft(\);)137 955 y Fu(The)17 b(function)g Ft(readline\(\))e -Fu(prin)o(ts)h(a)g(prompt)g Fk(prompt)h Fu(and)f(then)h(reads)f(and)h -(returns)f(a)g(single)75 1009 y(line)i(of)e(text)g(from)f(the)i(user.) -23 b(If)17 b Fk(prompt)g Fu(is)g Ft(NULL)e Fu(or)h(the)h(empt)o(y)f -(string,)g(no)g(prompt)g(is)h(displa)o(y)o(ed.)75 1064 -y(The)i(line)h Ft(readline)d Fu(returns)i(is)g(allo)q(cated)g(with)g -Ft(malloc\(\))p Fu(;)g(the)g(caller)g(should)h Ft(free\(\))e -Fu(the)g(line)75 1119 y(when)e(it)f(has)g(\014nished)i(with)f(it.)k -(The)15 b(declaration)h(for)f Ft(readline)f Fu(in)i(ANSI)g(C)f(is)75 -1187 y(So,)g(one)g(migh)o(t)g(sa)o(y)195 1251 y Ft(char)23 -b(*line)g(=)h(readline)f(\("Enter)g(a)h(line:)f("\);)75 -1319 y Fu(in)12 b(order)f(to)g(read)h(a)f(line)i(of)e(text)g(from)f -(the)i(user.)19 b(The)11 b(line)j(returned)d(has)h(the)f(\014nal)h -(newline)i(remo)o(v)o(ed,)75 1374 y(so)h(only)h(the)f(text)g(remains.) -137 1441 y(If)21 b Ft(readline)e Fu(encoun)o(ters)h(an)g -Ft(EOF)g Fu(while)i(reading)f(the)f(line,)j(and)d(the)h(line)g(is)g -(empt)o(y)f(at)g(that)75 1496 y(p)q(oin)o(t,)15 b(then)g -Ft(\(char)f(*\)NULL)g Fu(is)h(returned.)21 b(Otherwise,)15 -b(the)g(line)h(is)f(ended)h(just)e(as)h(if)g(a)f(newline)j(had)75 -1551 y(b)q(een)f(t)o(yp)q(ed.)137 1618 y(If)d(y)o(ou)g(w)o(an)o(t)f -(the)h(user)g(to)f(b)q(e)i(able)g(to)e(get)g(at)h(the)g(line)h(later,)f -(\(with)1325 1616 y Fn(h)p 1338 1590 57 2 v 1338 1618 -a Fm(C-p)p 1338 1626 V 1392 1616 a Fn(i)1420 1618 y Fu(for)f -(example\),)i(y)o(ou)f(m)o(ust)75 1673 y(call)j Ft(add_history\(\))e -Fu(to)g(sa)o(v)o(e)h(the)g(line)i(a)o(w)o(a)o(y)d(in)i(a)e -Fk(history)19 b Fu(list)d(of)f(suc)o(h)h(lines.)195 1738 -y Ft(add_history)22 b(\(line\);)75 1805 y Fu(F)l(or)15 -b(full)h(details)g(on)f(the)h(GNU)f(History)g(Library)l(,)g(see)h(the)f -(asso)q(ciated)g(man)o(ual.)137 1873 y(It)h(is)g(preferable)h(to)e(a)o -(v)o(oid)g(sa)o(ving)h(empt)o(y)f(lines)i(on)f(the)g(history)f(list,)i -(since)f(users)g(rarely)g(ha)o(v)o(e)f(a)75 1928 y(burning)h(need)g(to) -e(reuse)h(a)g(blank)g(line.)22 b(Here)15 b(is)g(a)g(function)g(whic)o -(h)h(usefully)h(replaces)e(the)g(standard)75 1983 y Ft(gets\(\))f -Fu(library)i(function,)g(and)f(has)g(the)h(adv)m(an)o(tage)e(of)h(no)g -(static)g(bu\013er)g(to)g(o)o(v)o(er\015o)o(w:)195 2047 -y Ft(/*)24 b(A)f(static)g(variable)g(for)h(holding)e(the)i(line.)f(*/) -195 2099 y(static)g(char)g(*line_read)g(=)h(\(char)f(*\)NULL;)195 -2203 y(/*)h(Read)f(a)h(string,)f(and)g(return)g(a)h(pointer)f(to)g(it.) -48 b(Returns)22 b(NULL)i(on)f(EOF.)h(*/)195 2255 y(char)f(*)195 -2307 y(rl_gets)g(\(\))195 2359 y({)243 2411 y(/*)g(If)h(the)f(buffer)g -(has)h(already)f(been)g(allocated,)g(return)g(the)g(memory)314 -2462 y(to)h(the)f(free)h(pool.)f(*/)243 2514 y(if)g(\(line_read\))290 -2566 y({)338 2618 y(free)g(\(line_read\);)338 2670 y(line_read)g(=)h -(\(char)f(*\)NULL;)p eop -%%Page: 20 22 -20 21 bop 75 -58 a Fu(20)1299 b(GNU)15 b(Readline)i(Library)290 -149 y Ft(})243 253 y(/*)23 b(Get)h(a)f(line)h(from)f(the)h(user.)f(*/) -243 305 y(line_read)f(=)i(readline)f(\(""\);)243 409 -y(/*)g(If)h(the)f(line)h(has)f(any)h(text)f(in)g(it,)h(save)f(it)h(on)f -(the)h(history.)f(*/)243 461 y(if)g(\(line_read)g(&&)g(*line_read\))290 -513 y(add_history)g(\(line_read\);)243 616 y(return)g(\(line_read\);) -195 668 y(})137 738 y Fu(This)13 b(function)f(giv)o(es)h(the)e(user)h -(the)g(default)h(b)q(eha)o(viour)g(of)1169 736 y Fn(h)p -1181 710 74 2 v 1181 738 a Fm(T)m(AB)p 1181 746 V 1253 -736 a Fn(i)1280 738 y Fu(completion:)19 b(completion)13 -b(on)f(\014le)75 793 y(names.)20 b(If)c(y)o(ou)f(do)g(not)g(w)o(an)o(t) -f(Readline)k(to)c(complete)j(on)e(\014lenames,)h(y)o(ou)f(can)g(c)o -(hange)h(the)f(binding)75 848 y(of)g(the)205 846 y Fn(h)p -217 820 V 217 848 a Fm(T)m(AB)p 217 855 V 289 846 a Fn(i)319 -848 y Fu(k)o(ey)g(with)h Ft(rl_bind_key\(\))p Fu(.)195 -914 y Ft(int)23 b(rl_bind_key)g(\(int)g Fk(k)o(ey)p Ft(,)h -(rl_command_func_t)d(*)p Fk(function)p Ft(\);)137 984 -y(rl_bind_key\(\))15 b Fu(tak)o(es)h(t)o(w)o(o)g(argumen)o(ts:)22 -b Fk(k)o(ey)e Fu(is)e(the)e(c)o(haracter)g(that)g(y)o(ou)h(w)o(an)o(t)f -(to)g(bind,)i(and)75 1039 y Fk(function)h Fu(is)f(the)g(address)g(of)g -(the)g(function)g(to)g(call)h(when)f Fk(k)o(ey)k Fu(is)c(pressed.)29 -b(Binding)1628 1037 y Fn(h)p 1641 1011 V 1641 1039 a -Fm(T)m(AB)p 1641 1046 V 1712 1037 a Fn(i)1745 1039 y -Fu(to)17 b Ft(rl_)75 1094 y(insert\(\))f Fu(mak)o(es)422 -1092 y Fn(h)p 434 1066 V 434 1094 a Fm(T)m(AB)p 434 1101 -V 506 1092 a Fn(i)539 1094 y Fu(insert)i(itself.)28 b -Ft(rl_bind_key\(\))15 b Fu(returns)j(non-zero)g(if)g -Fk(k)o(ey)j Fu(is)d(not)f(a)g(v)m(alid)75 1148 y(ASCI)q(I)f(c)o -(haracter)f(co)q(de)h(\(b)q(et)o(w)o(een)f(0)g(and)g(255\).)137 -1218 y(Th)o(us,)g(to)g(disable)h(the)g(default)703 1216 -y Fn(h)p 716 1190 V 716 1218 a Fm(T)m(AB)p 716 1226 V -787 1216 a Fn(i)817 1218 y Fu(b)q(eha)o(vior,)g(the)f(follo)o(wing)h -(su\016ces:)195 1285 y Ft(rl_bind_key)22 b(\('\\t',)h(rl_insert\);)137 -1354 y Fu(This)14 b(co)q(de)g(should)g(b)q(e)g(executed)g(once)g(at)e -(the)h(start)f(of)h(y)o(our)g(program;)f(y)o(ou)h(migh)o(t)g(write)g(a) -g(func-)75 1409 y(tion)k(called)h Ft(initialize_readline\(\))13 -b Fu(whic)o(h)k(p)q(erforms)f(this)h(and)g(other)f(desired)h -(initializations,)75 1464 y(suc)o(h)f(as)e(installing)k(custom)c -(completers)i(\(see)f(Section)h(2.6)f([Custom)f(Completers],)g(page)h -(37\).)75 1599 y Fs(2.2)33 b(Custom)21 b(F)-6 b(unctions)137 -1697 y Fu(Readline)15 b(pro)o(vides)e(man)o(y)e(functions)i(for)f -(manipulating)i(the)e(text)g(of)g(the)g(line,)i(but)e(it)h(isn't)f(p)q -(ossi-)75 1752 y(ble)i(to)f(an)o(ticipate)h(the)f(needs)h(of)f(all)h -(programs.)k(This)13 b(section)h(describ)q(es)h(the)e(v)m(arious)h -(functions)g(and)75 1807 y(v)m(ariables)g(de\014ned)h(within)f(the)f -(Readline)j(library)d(whic)o(h)h(allo)o(w)g(a)e(user)h(program)f(to)h -(add)g(customized)75 1862 y(functionalit)o(y)j(to)f(Readline.)137 -1931 y(Before)j(declaring)i(an)o(y)e(functions)h(that)f(customize)g -(Readline's)i(b)q(eha)o(vior,)g(or)d(using)i(an)o(y)f(func-)75 -1986 y(tionalit)o(y)23 b(Readline)i(pro)o(vides)f(in)f(other)g(co)q -(de,)h(an)f(application)i(writer)d(should)i(include)h(the)e(\014le)75 -2041 y Ft()14 b Fu(in)j(an)o(y)g(\014le)h(that)e -(uses)h(Readline's)h(features.)24 b(Since)19 b(some)d(of)g(the)h -(de\014-)75 2096 y(nitions)g(in)f Ft(readline.h)e Fu(use)i(the)g -Ft(stdio)f Fu(library)l(,)h(the)g(\014le)g Ft()f -Fu(should)h(b)q(e)g(included)j(b)q(efore)75 2151 y Ft(readline.h)p -Fu(.)75 2268 y Fj(2.2.1)30 b(Readline)20 b(T)n(yp)r(edefs)137 -2366 y Fu(F)l(or)15 b(readabilt)o(y)l(,)g(w)o(e)g(declare)i(a)d(n)o(um) -o(b)q(er)i(of)f(new)g(ob)s(ject)g(t)o(yp)q(es,)g(all)h(p)q(oin)o(ters)f -(to)g(functions.)137 2436 y(The)j(reason)g(for)f(declaring)i(these)f -(new)g(t)o(yp)q(es)g(is)h(to)e(mak)o(e)g(it)h(easier)h(to)e(write)h(co) -q(de)g(describing)75 2491 y(p)q(oin)o(ters)e(to)e(C)h(functions)h(with) -g(appropriately)f(protot)o(yp)q(ed)g(argumen)o(ts)g(and)g(return)g(v)m -(alues.)137 2560 y(F)l(or)j(instance,)i(sa)o(y)e(w)o(e)g(w)o(an)o(t)f -(to)h(declare)h(a)f(v)m(ariable)i Fk(func)i Fu(as)c(a)g(p)q(oin)o(ter)h -(to)f(a)g(function)h(whic)o(h)75 2615 y(tak)o(es)12 b(t)o(w)o(o)g -Ft(int)g Fu(argumen)o(ts)g(and)h(returns)g(an)g Ft(int)f -Fu(\(this)h(is)g(the)g(t)o(yp)q(e)g(of)g(all)g(of)g(the)g(Readline)i -(bindable)75 2670 y(functions\).)20 b(Instead)c(of)f(the)g(classic)h(C) -f(declaration)p eop -%%Page: 21 23 -21 22 bop 75 -58 a Fu(Chapter)15 b(2:)k(Programming)c(with)g(GNU)g -(Readline)844 b(21)137 149 y Ft(int)15 b(\(*func\)\(\);)75 -220 y Fu(or)g(the)g(ANSI-C)h(st)o(yle)f(declaration)137 -290 y Ft(int)g(\(*func\)\(int,)f(int\);)75 360 y Fu(w)o(e)h(ma)o(y)f -(write)137 430 y Ft(rl_command_func_t)f(*func;)137 500 -y Fu(The)j(full)g(list)g(of)f(function)h(p)q(oin)o(ter)g(t)o(yp)q(es)f -(a)o(v)m(ailable)i(is)75 584 y Ft(typedef)d(int)h(rl_command_func_t)e -(\(int,)h(int\);)75 652 y(typedef)g(char)h(*rl_compentry_func_t)d -(\(const)j(char)f(*,)h(int\);)75 721 y(typedef)f(char)h -(**rl_completion_func_t)d(\(const)i(char)h(*,)g(int,)f(int\);)75 -790 y(typedef)g(char)h(*rl_quote_func_t)e(\(char)h(*,)h(int,)g(char)f -(*\);)75 858 y(typedef)g(char)h(*rl_dequote_func_t)d(\(char)j(*,)g -(int\);)75 927 y(typedef)f(int)h(rl_compignore_func_t)d(\(char)j(**\);) -75 996 y(typedef)f(void)h(rl_compdisp_func_t)d(\(char)j(**,)g(int,)f -(int\);)75 1064 y(typedef)g(int)h(rl_hook_func_t)e(\(void\);)75 -1133 y(typedef)h(int)h(rl_getc_func_t)e(\(FILE)i(*\);)75 -1202 y(typedef)f(int)h(rl_linebuf_func_t)e(\(char)h(*,)h(int\);)75 -1270 y(typedef)f(int)h(rl_intfunc_t)e(\(int\);)75 1339 -y(#define)h(rl_ivoidfunc_t)f(rl_hook_func_t)75 1408 y(typedef)h(int)h -(rl_icpfunc_t)e(\(char)i(*\);)75 1476 y(typedef)f(int)h(rl_icppfunc_t)e -(\(char)i(**\);)75 1545 y(typedef)f(void)h(rl_voidfunc_t)e(\(void\);)75 -1614 y(typedef)h(void)h(rl_vintfunc_t)e(\(int\);)75 1682 -y(typedef)h(void)h(rl_vcpfunc_t)e(\(char)i(*\);)75 1751 -y(typedef)f(void)h(rl_vcppfunc_t)e(\(char)i(**\);)75 -1855 y Fj(2.2.2)30 b(W)-5 b(riting)20 b(a)h(New)f(F)-5 -b(unction)137 1954 y Fu(In)17 b(order)f(to)f(write)h(new)h(functions)g -(for)e(Readline,)j(y)o(ou)e(need)h(to)e(kno)o(w)h(the)g(calling)i(con)o -(v)o(en)o(tions)75 2009 y(for)g(k)o(eyb)q(oard-in)o(v)o(ok)o(ed)h -(functions,)g(and)g(the)f(names)h(of)f(the)g(v)m(ariables)i(that)d -(describ)q(e)k(the)d(curren)o(t)75 2064 y(state)c(of)h(the)g(line)i -(read)e(so)g(far.)137 2134 y(The)h(calling)h(sequence)f(for)f(a)f -(command)i Ft(foo)e Fu(lo)q(oks)i(lik)o(e)195 2201 y -Ft(foo)23 b(\(int)h(count,)f(int)g(key\))75 2271 y Fu(where)18 -b Fk(coun)o(t)h Fu(is)f(the)g(n)o(umeric)h(argumen)o(t)e(\(or)h(1)f(if) -i(defaulted\))f(and)g Fk(k)o(ey)k 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bop 75 -58 a Fu(22)1299 b(GNU)15 b(Readline)i(Library)75 -149 y Fs(2.3)33 b(Readline)23 b(V)-6 b(ariables)137 246 -y Fu(These)16 b(v)m(ariables)g(are)f(a)o(v)m(ailable)i(to)e(function)h -(writers.)1773 362 y(V)l(ariable)-1861 b Fi(char)20 b(*)f -Fh(rl)p 286 362 18 3 v 21 w(line)p 395 362 V 23 w(bu\013er)195 -417 y Fu(This)d(is)g(the)g(line)h(gathered)f(so)f(far.)20 -b(Y)l(ou)c(are)f(w)o(elcome)h(to)f(mo)q(dify)h(the)g(con)o(ten)o(ts)f -(of)g(the)h(line,)195 472 y(but)i(see)g(Section)h(2.4.5)d([Allo)o(wing) -i(Undoing],)h(page)e(29.)27 b(The)18 b(function)h Ft(rl_extend_line_) -195 526 y(buffer)14 b Fu(is)i(a)o(v)m(ailable)h(to)d(increase)j(the)e -(memory)f(allo)q(cated)j(to)d Ft(rl_line_buffer)p Fu(.)1773 -643 y(V)l(ariable)-1861 b Fi(int)20 b Fh(rl)p 215 643 -V 21 w(p)r(oin)n(t)195 698 y Fu(The)15 b(o\013set)g(of)f(the)i(curren)o -(t)f(cursor)g(p)q(osition)h(in)g Ft(rl_line_buffer)d -Fu(\(the)i Fl(p)n(oint)t Fu(\).)1773 814 y(V)l(ariable)-1861 -b Fi(int)20 b Fh(rl)p 215 814 V 21 w(end)195 869 y Fu(The)14 -b(n)o(um)o(b)q(er)g(of)g(c)o(haracters)f(presen)o(t)h(in)h -Ft(rl_line_buffer)p Fu(.)i(When)e Ft(rl_point)e Fu(is)h(at)f(the)h(end) -195 924 y(of)h(the)g(line,)i Ft(rl_point)d Fu(and)h Ft(rl_end)f -Fu(are)h(equal.)1773 1040 y(V)l(ariable)-1861 b Fi(int)20 -b Fh(rl)p 215 1040 V 21 w(mark)195 1095 y Fu(The)f Fk(mark)h -Fu(\(sa)o(v)o(ed)e(p)q(osition\))h(in)g(the)g(curren)o(t)f(line.)31 -b(If)19 b(set,)g(the)f(mark)g(and)h(p)q(oin)o(t)g(de\014ne)g(a)195 -1150 y Fl(r)n(e)n(gion)p Fu(.)1773 1266 y(V)l(ariable)-1861 -b Fi(int)20 b Fh(rl)p 215 1266 V 21 w(done)195 1321 y -Fu(Setting)11 b(this)g(to)g(a)f(non-zero)h(v)m(alue)h(causes)f -(Readline)i(to)e(return)f(the)h(curren)o(t)g(line)h(immediately)l(.) -1773 1437 y(V)l(ariable)-1861 b Fi(int)20 b Fh(rl)p 215 -1437 V 21 w(n)n(um)p 347 1437 V 19 w(c)n(hars)p 496 1437 -V 20 w(to)p 567 1437 V 21 w(read)195 1492 y Fu(Setting)d(this)g(to)f(a) -g(p)q(ositiv)o(e)h(v)m(alue)h(b)q(efore)f(calling)h Ft(readline\(\))d 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y(V)l(ariable)-1861 b Fi(int)20 b Fh(rl)p 215 2225 -V 21 w(erase)p 363 2225 V 20 w(empt)n(y)p 540 2225 V -20 w(line)195 2280 y Fu(Setting)j(this)h(to)e(a)h(non-zero)g(v)m(alue)h -(causes)f(Readline)j(to)c(completely)i(erase)f(the)g(curren)o(t)195 -2334 y(line,)g(including)h(an)o(y)c(prompt,)h(an)o(y)g(time)g(a)f -(newline)j(is)e(t)o(yp)q(ed)g(as)f(the)h(only)g(c)o(haracter)f(on)195 -2389 y(an)e(otherwise-empt)o(y)g(line.)31 b(The)18 b(cursor)g(is)h(mo)o -(v)o(ed)e(to)h(the)g(b)q(eginning)i(of)e(the)g(newly-blank)195 -2444 y(line.)1773 2560 y(V)l(ariable)-1861 b Fi(char)20 -b(*)f Fh(rl)p 286 2560 V 21 w(prompt)195 2615 y Fu(The)13 -b(prompt)g(Readline)i(uses.)20 b(This)13 b(is)h(set)f(from)f(the)h -(argumen)o(t)g(to)f Ft(readline\(\))p Fu(,)g(and)h(should)195 -2670 y(not)i(b)q(e)h(assigned)f(to)g(directly)l(.)p eop -%%Page: 23 25 -23 24 bop 75 -58 a Fu(Chapter)15 b(2:)k(Programming)c(with)g(GNU)g -(Readline)844 b(23)1773 149 y(V)l(ariable)-1861 b Fi(int)20 -b Fh(rl)p 215 149 18 3 v 21 w(already)p 419 149 V 21 -w(prompted)195 204 y Fu(If)e(an)g(application)i(wishes)f(to)f(displa)o -(y)h(the)f(prompt)g(itself,)h(rather)f(than)g(ha)o(v)o(e)g(Readline)i -(do)195 259 y(it)d(the)f(\014rst)g(time)h Ft(readline\(\))e -Fu(is)i(called,)h(it)e(should)i(set)e(this)h(v)m(ariable)g(to)f(a)g -(non-zero)h(v)m(alue)195 314 y(after)h(displa)o(ying)j(the)e(prompt.)31 -b(The)19 b(prompt)g(m)o(ust)f(also)h(b)q(e)h(passed)f(as)f(the)h -(argumen)o(t)g(to)195 369 y Ft(readline\(\))c Fu(so)h(the)h(redispla)o -(y)g(functions)h(can)e(up)q(date)h(the)g(displa)o(y)h(prop)q(erly)l(.) -24 b(The)17 b(calling)195 423 y(application)g(is)f(resp)q(onsible)h -(for)d(managing)h(the)h(v)m(alue;)g(Readline)h(nev)o(er)f(sets)e(it.) -1773 555 y(V)l(ariable)-1861 b Fi(const)20 b(char)g(*)f -Fh(rl)p 436 555 V 21 w(library)p 625 555 V 21 w(v)n(ersion)195 -610 y Fu(The)c(v)o(ersion)h(n)o(um)o(b)q(er)f(of)g(this)h(revision)g -(of)f(the)g(library)l(.)1773 741 y(V)l(ariable)-1861 -b Fi(int)20 b Fh(rl)p 215 741 V 21 w(gn)n(u)p 327 741 -V 20 w(readline)p 545 741 V 22 w(p)195 796 y Fu(Alw)o(a)o(ys)15 -b(set)g(to)f(1,)h(denoting)h(that)e(this)i(is)g Fp(gnu)f -Fu(readline)h(rather)f(than)g(some)g(em)o(ulation.)1773 -928 y(V)l(ariable)-1861 b Fi(const)20 b(char)g(*)f Fh(rl)p -436 928 V 21 w(terminal)p 668 928 V 21 w(name)195 982 -y Fu(The)14 b(terminal)h(t)o(yp)q(e,)f(used)h(for)e(initialization.)23 -b(If)14 b(not)f(set)h(b)o(y)g(the)g(application,)i(Readline)g(sets)195 -1037 y(this)g(to)e(the)h(v)m(alue)i(of)e(the)g Ft(TERM)g -Fu(en)o(vironmen)o(t)g(v)m(ariable)i(the)e(\014rst)g(time)g(it)h(is)f -(called.)1773 1169 y(V)l(ariable)-1861 b Fi(const)20 -b(char)g(*)f Fh(rl)p 436 1169 V 21 w(readline)p 655 1169 -V 22 w(name)195 1223 y Fu(This)d(v)m(ariable)h(is)f(set)g(to)f(a)g -(unique)i(name)f(b)o(y)f(eac)o(h)h(application)h(using)f(Readline.)24 -b(The)16 b(v)m(alue)195 1278 y(allo)o(ws)e(conditional)i(parsing)e(of)g -(the)g(inputrc)h(\014le)g(\(see)f(Section)h(1.3.2)d([Conditional)j -(Init)g(Con-)195 1333 y(structs],)f(page)h(8\).)1773 -1465 y(V)l(ariable)-1861 b Fi(FILE)20 b(*)f Fh(rl)p 286 -1465 V 21 w(instream)195 1519 y Fu(The)c(stdio)h(stream)e(from)h(whic)o -(h)h(Readline)h(reads)e(input.)1773 1651 y(V)l(ariable)-1861 -b Fi(FILE)20 b(*)f Fh(rl)p 286 1651 V 21 w(outstream)195 -1706 y Fu(The)c(stdio)h(stream)e(to)h(whic)o(h)h(Readline)h(p)q -(erforms)e(output.)1773 1837 y(V)l(ariable)-1861 b Fi -(rl_command_func_t)22 b(*)d Fh(rl)p 626 1837 V 21 w(last)p -735 1837 V 21 w(func)195 1892 y Fu(The)f(address)f(of)g(the)g(last)h -(command)f(function)h(Readline)i(executed.)27 b(Ma)o(y)17 -b(b)q(e)h(used)g(to)f(test)195 1947 y(whether)e(or)g(not)g(a)g -(function)h(is)f(b)q(eing)i(executed)f(t)o(wice)g(in)g(succession,)g -(for)e(example.)1773 2078 y(V)l(ariable)-1861 b Fi(rl_hook_func_t)21 -b(*)e Fh(rl)p 547 2078 V 22 w(startup)p 752 2078 V 19 -w(ho)r(ok)195 2133 y Fu(If)e(non-zero,)h(this)g(is)f(the)h(address)f -(of)f(a)h(function)h(to)f(call)h(just)f(b)q(efore)g Ft(readline)f 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798 735 V -19 w(function)195 790 y Fu(If)11 b(non-zero,)g Ft(readline)e -Fu(will)j(call)g(indirectly)h(through)d(this)h(p)q(oin)o(ter)g(to)e -(initialize)14 b(the)d(terminal.)195 844 y(The)19 b(function)g(tak)o -(es)f(a)g(single)i(argumen)o(t,)e(an)h Ft(int)f Fu(\015ag)g(that)g(sa)o -(ys)g(whether)g(or)h(not)f(to)g(use)195 899 y(eigh)o(t-bit)g(c)o -(haracters.)25 b(By)17 b(default,)h(this)f(is)h(set)e(to)h -Ft(rl_prep_terminal)e Fu(\(see)i(Section)h(2.4.9)195 -954 y([T)l(erminal)e(Managemen)o(t],)d(page)i(32\).)1773 -1082 y(V)l(ariable)-1861 b Fi(rl_voidfunc_t)21 b(*)e -Fh(rl)p 521 1082 V 21 w(deprep)p 714 1082 V 21 w(term)p -856 1082 V 19 w(function)195 1137 y Fu(If)e(non-zero,)g -Ft(readline)f Fu(will)i(call)g(indirectly)h(through)e(this)g(p)q(oin)o -(ter)g(to)f(reset)h(the)g(terminal.)195 1192 y(This)h(function)g -(should)h(undo)f(the)f(e\013ects)h(of)f Ft(rl_prep_term_function)p -Fu(.)24 b(By)17 b(default,)i(this)195 1247 y(is)d(set)f(to)f -Ft(rl_deprep_terminal)f Fu(\(see)i(Section)h(2.4.9)e([T)l(erminal)i -(Managemen)o(t],)d(page)i(32\).)1773 1375 y(V)l(ariable)-1861 -b Fi(Keymap)20 b Fh(rl)p 293 1375 V 21 w(executing)p -551 1375 V 22 w(k)n(eymap)195 1430 y Fu(This)f(v)m(ariable)g(is)f(set)g -(to)g(the)g(k)o(eymap)f(\(see)h(Section)h(2.4.2)e([Keymaps],)g(page)h -(26\))f(in)i(whic)o(h)195 1485 y(the)c(curren)o(tly)h(executing)g -(readline)h(function)f(w)o(as)f(found.)1773 1613 y(V)l(ariable)-1861 -b Fi(Keymap)20 b Fh(rl)p 293 1613 V 21 w(binding)p 501 -1613 V 22 w(k)n(eymap)195 1668 y Fu(This)f(v)m(ariable)g(is)f(set)g(to) -g(the)g(k)o(eymap)f(\(see)h(Section)h(2.4.2)e([Keymaps],)g(page)h(26\)) -f(in)i(whic)o(h)195 1723 y(the)c(last)g(k)o(ey)g(binding)j(o)q -(ccurred.)1773 1851 y(V)l(ariable)-1861 b Fi(char)20 -b(*)f Fh(rl)p 286 1851 V 21 w(executing)p 544 1851 V -22 w(macro)195 1906 y Fu(This)d(v)m(ariable)g(is)g(set)f(to)g(the)g -(text)g(of)f(an)o(y)h(curren)o(tly-executing)i(macro.)1773 -2034 y(V)l(ariable)-1861 b Fi(int)20 b Fh(rl)p 215 2034 -V 21 w(readline)p 434 2034 V 22 w(state)195 2089 y Fu(A)d(v)m(ariable)i -(with)e(bit)h(v)m(alues)h(that)d(encapsulate)i(the)g(curren)o(t)f -(Readline)i(state.)25 b(A)18 b(bit)f(is)h(set)195 2144 -y(with)h(the)g Ft(RL_SETSTATE)f Fu(macro,)h(and)g(unset)g(with)g(the)g -Ft(RL_UNSETSTATE)e Fu(macro.)31 b(Use)19 b(the)195 2199 -y Ft(RL_ISSTATE)e Fu(macro)h(to)g(test)g(whether)h(a)f(particular)i -(state)d(bit)j(is)f(set.)30 b(Curren)o(t)18 b(state)g(bits)195 -2253 y(include:)195 2339 y Ft(RL_STATE_NONE)435 2393 -y Fu(Readline)f(has)f(not)e(y)o(et)h(b)q(een)h(called,)h(nor)e(has)g -(it)g(b)q(egun)h(to)f(in)o(tialize.)195 2477 y Ft -(RL_STATE_INITIALIZING)435 2532 y Fu(Readline)i(is)f(initializi)q(ng)i -(its)d(in)o(ternal)h(data)f(structures.)195 2615 y Ft -(RL_STATE_INITIALIZED)435 2670 y Fu(Readline)i(has)f(completed)g(its)f -(initialization.)p eop -%%Page: 25 27 -25 26 bop 75 -58 a Fu(Chapter)15 b(2:)k(Programming)c(with)g(GNU)g -(Readline)844 b(25)195 149 y 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V 21 w(mak)n(e)p 445 2124 V 20 w(bare)p 575 2124 -V 20 w(k)n(eymap)j Fg(\()p Ft(void)p Fg(\))195 2179 y -Fu(Returns)13 b(a)e(new,)i(empt)o(y)f(k)o(eymap.)18 b(The)13 -b(space)f(for)f(the)i(k)o(eymap)e(is)i(allo)q(cated)g(with)f -Ft(malloc\(\))p Fu(;)195 2233 y(the)j(caller)i(should)f(free)f(it)h(b)o -(y)f(calling)i Ft(rl_discard_keymap\(\))12 b Fu(when)k(done.)1762 -2342 y(F)l(unction)-1861 b Fi(Keymap)20 b Fh(rl)p 293 -2342 V 21 w(cop)n(y)p 428 2342 V 21 w(k)n(eymap)j Fg(\()p -Ft(Keymap)14 b(map)p Fg(\))195 2397 y Fu(Return)i(a)f(new)g(k)o(eymap)g -(whic)o(h)h(is)g(a)f(cop)o(y)g(of)g Fk(map)p Fu(.)1762 -2506 y(F)l(unction)-1861 b Fi(Keymap)20 b Fh(rl)p 293 -2506 V 21 w(mak)n(e)p 445 2506 V 20 w(k)n(eymap)j Fg(\()p -Ft(void)p Fg(\))195 2560 y Fu(Return)17 b(a)e(new)i(k)o(eymap)e(with)i -(the)f(prin)o(ting)h(c)o(haracters)e(b)q(ound)i(to)e(rl)p -1457 2560 14 2 v 17 w(insert,)h(the)g(lo)o(w)o(ercase)195 -2615 y(Meta)11 b(c)o(haracters)f(b)q(ound)i(to)f(run)h(their)f(equiv)m 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b(itself)j(is)f(allo)q(cated,)h(but)f(not)f -(the)h(strings)f(inside.)21 b(Y)l(ou)13 b(should)h Ft(free\(\))d -Fu(the)i(arra)o(y)e(when)195 1034 y(y)o(ou)k(are)g(done,)g(but)g(not)g -(the)g(p)q(oin)o(ters.)1762 1146 y(F)l(unction)-1861 -b Fi(int)20 b Fh(rl)p 215 1146 V 21 w(add)p 328 1146 -V 20 w(funmap)p 539 1146 V 18 w(en)n(try)j Fg(\()p Ft(const)14 -b(char)h(*name,)f(rl_command_func_t)283 1201 y(*function)p -Fg(\))195 1255 y Fu(Add)j Fk(name)i Fu(to)d(the)g(list)h(of)f(bindable) -j(Readline)g(command)d(names,)g(and)h(mak)o(e)f Fk(function)h -Fu(the)195 1310 y(function)f(to)f(b)q(e)g(called)i(when)f -Fk(name)i Fu(is)d(in)o(v)o(ok)o(ed.)75 1419 y Fj(2.4.5)30 -b(Allo)n(wing)21 b(Undoing)137 1515 y Fu(Supp)q(orting)14 -b(the)g(undo)f(command)g(is)h(a)f(painless)h(thing,)g(and)f(mak)o(es)g -(y)o(our)f(functions)i(m)o(uc)o(h)f(more)75 1569 y(useful.)21 -b(It)15 b(is)h(certainly)g(easy)f(to)g(try)f(something)i(if)f(y)o(ou)g -(kno)o(w)g(y)o(ou)g(can)g(undo)h(it.)137 1636 y(If)21 -b(y)o(our)f(function)h(simply)h(inserts)f(text)e(once,)j(or)e(deletes)h -(text)f(once,)i(and)f(uses)f Ft(rl_insert_)75 1690 y(text\(\))13 -b Fu(or)h Ft(rl_delete_text\(\))d Fu(to)j(do)f(it,)h(then)h(undoing)g -(is)f(already)g(done)h(for)e(y)o(ou)h(automatically)l(.)137 -1757 y(If)d(y)o(ou)f(do)g(m)o(ultiple)i(insertions)f(or)f(m)o(ultiple)i -(deletions,)g(or)e(an)o(y)g(com)o(bination)h(of)f(these)g(op)q -(erations,)75 1812 y(y)o(ou)19 b(should)h(group)e(them)h(together)g(in) -o(to)g(one)g(op)q(eration.)31 b(This)20 b(is)f(done)h(with)f -Ft(rl_begin_undo_)75 1866 y(group\(\))14 b Fu(and)i Ft -(rl_end_undo_group\(\))p Fu(.)137 1933 y(The)g(t)o(yp)q(es)f(of)g(ev)o -(en)o(ts)g(that)f(can)h(b)q(e)h(undone)g(are:)195 1996 -y Ft(enum)23 b(undo_code)g({)h(UNDO_DELETE,)e(UNDO_INSERT,)g -(UNDO_BEGIN,)g(UNDO_END)h(};)137 2062 y Fu(Notice)16 -b(that)e Ft(UNDO_DELETE)g Fu(means)h(to)g(insert)g(some)g(text,)f(and)i -Ft(UNDO_INSERT)d Fu(means)i(to)g(delete)75 2117 y(some)e(text.)19 -b(That)14 b(is,)g(the)g(undo)g(co)q(de)g(tells)h(what)e(to)h(undo,)g -(not)f(ho)o(w)g(to)g(undo)i(it.)k Ft(UNDO_BEGIN)13 b -Fu(and)75 2172 y Ft(UNDO_END)h Fu(are)h(tags)f(added)i(b)o(y)f -Ft(rl_begin_undo_group\(\))d Fu(and)k Ft(rl_end_undo_group\(\))p -Fu(.)1762 2284 y(F)l(unction)-1861 b Fi(int)20 b Fh(rl)p -215 2284 V 21 w(b)r(egin)p 372 2284 V 20 w(undo)p 517 -2284 V 20 w(group)h Fg(\()p Ft(void)p Fg(\))195 2339 -y Fu(Begins)16 b(sa)o(ving)g(undo)g(information)f(in)i(a)e(group)g -(construct.)20 b(The)c(undo)g(information)g(usually)195 -2393 y(comes)21 b(from)f(calls)i(to)e Ft(rl_insert_text\(\))e -Fu(and)j Ft(rl_delete_text\(\))p Fu(,)f(but)h(could)g(b)q(e)h(the)195 -2448 y(result)16 b(of)e(calls)j(to)d Ft(rl_add_undo\(\))p -Fu(.)1762 2560 y(F)l(unction)-1861 b Fi(int)20 b Fh(rl)p -215 2560 V 21 w(end)p 326 2560 V 20 w(undo)p 471 2560 -V 20 w(group)h Fg(\()p Ft(void)p Fg(\))195 2615 y Fu(Closes)15 -b(the)f(curren)o(t)h(undo)g(group)f(started)g(with)g -Ft(rl_begin_undo_group)f(\(\))p Fu(.)19 b(There)c(should)195 -2670 y(b)q(e)h(one)f(call)i(to)d Ft(rl_end_undo_group\(\))f -Fu(for)h(eac)o(h)h(call)i(to)d Ft(rl_begin_undo_group\(\))p -Fu(.)p eop -%%Page: 30 32 -30 31 bop 75 -58 a Fu(30)1299 b(GNU)15 b(Readline)i(Library)1762 -149 y(F)l(unction)-1861 b Fi(void)20 b Fh(rl)p 241 149 -18 3 v 21 w(add)p 354 149 V 20 w(undo)i Fg(\()p Ft(enum)14 -b(undo_code)g(what,)g(int)h(start,)g(int)f(end,)h(char)283 -204 y(*text)p Fg(\))195 259 y Fu(Remem)o(b)q(er)j(ho)o(w)e(to)h(undo)g -(an)g(ev)o(en)o(t)g(\(according)g(to)g Fk(what)q Fu(\).)24 -b(The)17 b(a\013ected)g(text)f(runs)i(from)195 314 y -Fk(start)d Fu(to)g Fk(end)p Fu(,)g(and)g(encompasses)h -Fk(text)p Fu(.)1762 428 y(F)l(unction)-1861 b Fi(void)20 -b Fh(rl)p 241 428 V 21 w(free)p 356 428 V 20 w(undo)p -501 428 V 20 w(list)k Fg(\()p Ft(void)p Fg(\))195 483 -y Fu(F)l(ree)15 b(the)h(existing)g(undo)f(list.)1762 -598 y(F)l(unction)-1861 b Fi(int)20 b Fh(rl)p 215 598 -V 21 w(do)p 297 598 V 20 w(undo)i Fg(\()p Ft(void)p Fg(\))195 -652 y Fu(Undo)12 b(the)f(\014rst)g(thing)h(on)g(the)f(undo)h(list.)19 -b(Returns)12 b Ft(0)g Fu(if)g(there)f(w)o(as)g(nothing)h(to)e(undo,)j -(non-zero)195 707 y(if)j(something)f(w)o(as)f(undone.)137 -798 y(Finally)l(,)j(if)f(y)o(ou)f(neither)i(insert)f(nor)f(delete)i -(text,)e(but)g(directly)i(mo)q(dify)f(the)g(existing)g(text)g(\(e.g.,) -75 853 y(c)o(hange)j(its)h(case\),)g(call)g Ft(rl_modifying\(\))e -Fu(once,)i(just)f(b)q(efore)h(y)o(ou)f(mo)q(dify)h(the)f(text.)32 -b(Y)l(ou)20 b(m)o(ust)75 907 y(supply)c(the)g(indices)h(of)e(the)g -(text)g(range)g(that)f(y)o(ou)h(are)g(going)g(to)g(mo)q(dify)l(.)1762 -1022 y(F)l(unction)-1861 b Fi(int)20 b Fh(rl)p 215 1022 -V 21 w(mo)r(difying)h Fg(\()p Ft(int)15 b(start,)f(int)h(end)p -Fg(\))195 1077 y Fu(T)l(ell)22 b(Readline)g(to)d(sa)o(v)o(e)h(the)g -(text)g(b)q(et)o(w)o(een)g Fk(start)g Fu(and)g Fk(end)j -Fu(as)c(a)h(single)h(undo)g(unit.)35 b(It)20 b(is)195 -1131 y(assumed)15 b(that)g(y)o(ou)g(will)i(subsequen)o(tly)f(mo)q(dify) -g(that)e(text.)75 1242 y Fj(2.4.6)30 b(Redispla)n(y)1762 -1385 y Fu(F)l(unction)-1861 b Fi(void)20 b Fh(rl)p 241 -1385 V 21 w(redispla)n(y)k Fg(\()p Ft(void)p Fg(\))195 -1440 y Fu(Change)19 b(what's)f(displa)o(y)o(ed)i(on)f(the)g(screen)g -(to)f(re\015ect)i(the)f(curren)o(t)f(con)o(ten)o(ts)h(of)f -Ft(rl_line_)195 1495 y(buffer)p Fu(.)1762 1609 y(F)l(unction)-1861 -b Fi(int)20 b Fh(rl)p 215 1609 V 21 w(forced)p 390 1609 -V 20 w(up)r(date)p 584 1609 V 20 w(displa)n(y)k Fg(\()p -Ft(void)p Fg(\))195 1664 y Fu(F)l(orce)c(the)g(line)h(to)e(b)q(e)i(up)q -(dated)f(and)g(redispla)o(y)o(ed,)i(whether)e(or)g(not)f(Readline)j -(thinks)f(the)195 1719 y(screen)16 b(displa)o(y)g(is)g(correct.)1762 -1833 y(F)l(unction)-1861 b Fi(int)20 b Fh(rl)p 215 1833 -V 21 w(on)p 297 1833 V 20 w(new)p 416 1833 V 21 w(line)k -Fg(\()p Ft(void)p Fg(\))195 1888 y Fu(T)l(ell)16 b(the)f(up)q(date)h -(functions)g(that)e(w)o(e)g(ha)o(v)o(e)h(mo)o(v)o(ed)f(on)o(to)g(a)h -(new)g(\(empt)o(y\))f(line,)i(usually)h(after)195 1943 -y(ouputting)f(a)e(newline.)1762 2058 y(F)l(unction)-1861 -b Fi(int)20 b Fh(rl)p 215 2058 V 21 w(on)p 297 2058 V -20 w(new)p 416 2058 V 21 w(line)p 525 2058 V 22 w(with)p -657 2058 V 22 w(prompt)h Fg(\()p Ft(void)p Fg(\))195 -2112 y Fu(T)l(ell)14 b(the)e(up)q(date)h(functions)g(that)f(w)o(e)g(ha) -o(v)o(e)g(mo)o(v)o(ed)f(on)o(to)h(a)g(new)g(line,)i(with)f -Fk(rl)p 1556 2112 14 2 v 17 w(prompt)g Fu(already)195 -2167 y(displa)o(y)o(ed.)21 b(This)15 b(could)g(b)q(e)g(used)g(b)o(y)f -(applications)i(that)e(w)o(an)o(t)f(to)h(output)g(the)g(prompt)g -(string)195 2222 y(themselv)o(es,)g(but)g(still)h(need)g(Readline)h(to) -d(kno)o(w)g(the)h(prompt)f(string)h(length)g(for)f(redispla)o(y)l(.)21 -b(It)195 2277 y(should)16 b(b)q(e)g(used)g(after)e(setting)i -Fk(rl)p 795 2277 V 16 w(already)p 956 2277 V 17 w(prompted)p -Fu(.)1762 2391 y(F)l(unction)-1861 b Fi(int)20 b Fh(rl)p -215 2391 18 3 v 21 w(reset)p 357 2391 V 20 w(line)p 465 -2391 V 23 w(state)j Fg(\()p Ft(void)p Fg(\))195 2446 -y Fu(Reset)18 b(the)f(displa)o(y)i(state)d(to)h(a)g(clean)h(state)f -(and)g(redispla)o(y)i(the)e(curren)o(t)g(line)i(starting)e(on)g(a)195 -2501 y(new)e(line.)1762 2615 y(F)l(unction)-1861 b Fi(int)20 -b Fh(rl)p 215 2615 V 21 w(crlf)j Fg(\()p Ft(void)p Fg(\))195 -2670 y Fu(Mo)o(v)o(e)14 b(the)h(cursor)g(to)g(the)g(start)f(of)h(the)g -(next)g(screen)h(line.)p eop -%%Page: 31 33 -31 32 bop 75 -58 a Fu(Chapter)15 b(2:)k(Programming)c(with)g(GNU)g -(Readline)844 b(31)1762 149 y(F)l(unction)-1861 b Fi(int)20 -b Fh(rl)p 215 149 18 3 v 21 w(message)g Fg(\()p Ft(const)14 -b(char)h(*,)g(...)p Fg(\))195 204 y Fu(The)c(argumen)o(ts)e(are)h(a)g -(format)f(string)h(as)g(w)o(ould)h(b)q(e)g(supplied)i(to)c -Ft(printf)p Fu(,)h(p)q(ossibly)i(con)o(taining)195 259 -y(con)o(v)o(ersion)22 b(sp)q(eci\014cations)i(suc)o(h)f(as)e(`)p -Ft(\045d)p Fu(',)i(and)f(an)o(y)g(additional)h(argumen)o(ts)e -(necessary)i(to)195 314 y(satisfy)d(the)h(con)o(v)o(ersion)g(sp)q -(eci\014cations.)38 b(The)21 b(resulting)h(string)e(is)i(displa)o(y)o -(ed)g(in)f(the)g Fk(ec)o(ho)195 369 y(area)p Fu(.)e(The)d(ec)o(ho)f -(area)g(is)g(also)g(used)h(to)f(displa)o(y)h(n)o(umeric)g(argumen)o(ts) -f(and)g(searc)o(h)g(strings.)1762 518 y(F)l(unction)-1861 -b Fi(int)20 b Fh(rl)p 215 518 V 21 w(clear)p 354 518 -V 21 w(message)h Fg(\()p Ft(void)p Fg(\))195 573 y Fu(Clear)15 -b(the)h(message)e(in)i(the)g(ec)o(ho)f(area.)1762 723 -y(F)l(unction)-1861 b Fi(void)20 b Fh(rl)p 241 723 V -21 w(sa)n(v)n(e)p 365 723 V 21 w(prompt)h Fg(\()p Ft(void)p -Fg(\))195 778 y Fu(Sa)o(v)o(e)g(the)h(lo)q(cal)g(Readline)i(prompt)d -(displa)o(y)i(state)e(in)h(preparation)f(for)g(displa)o(ying)j(a)d(new) -195 833 y(message)15 b(in)h(the)f(message)g(area)f(with)i -Ft(rl_message\(\))p Fu(.)1762 982 y(F)l(unction)-1861 -b Fi(void)20 b Fh(rl)p 241 982 V 21 w(restore)p 436 982 -V 20 w(prompt)g Fg(\()p Ft(void)p Fg(\))195 1037 y Fu(Restore)h(the)h -(lo)q(cal)g(Readline)i(prompt)d(displa)o(y)h(state)f(sa)o(v)o(ed)g(b)o -(y)g(the)g(most)g(recen)o(t)g(call)i(to)195 1092 y Ft(rl_save_prompt)p -Fu(.)1762 1242 y(F)l(unction)-1861 b Fi(int)20 b Fh(rl)p -215 1242 V 21 w(expand)p 416 1242 V 20 w(prompt)h Fg(\()p -Ft(char)14 b(*prompt)p Fg(\))195 1296 y Fu(Expand)22 -b(an)o(y)f(sp)q(ecial)i(c)o(haracter)e(sequences)h(in)g -Fk(prompt)g Fu(and)g(set)f(up)h(the)f(lo)q(cal)i(Readline)195 -1351 y(prompt)17 b(redispla)o(y)i(v)m(ariables.)30 b(This)18 -b(function)h(is)f(called)i(b)o(y)e Ft(readline\(\))p -Fu(.)26 b(It)18 b(ma)o(y)f(also)h(b)q(e)195 1406 y(called)12 -b(to)e(expand)h(the)g(primary)g(prompt)f(if)h(the)f Ft -(rl_on_new_line_with_prompt\(\))d Fu(function)195 1461 -y(or)12 b Ft(rl_already_prompted)e Fu(v)m(ariable)k(is)g(used.)19 -b(It)13 b(returns)g(the)f(n)o(um)o(b)q(er)i(of)e(visible)j(c)o -(haracters)195 1516 y(on)g(the)g(last)h(line)g(of)f(the)g(\(p)q -(ossibly)i(m)o(ulti-line\))g(prompt.)75 1649 y Fj(2.4.7)30 -b(Mo)r(difying)20 b(T)-5 b(ext)1762 1828 y Fu(F)l(unction)-1861 -b Fi(int)20 b Fh(rl)p 215 1828 V 21 w(insert)p 378 1828 -V 21 w(text)k Fg(\()p Ft(const)14 b(char)g(*text)p Fg(\))195 -1883 y Fu(Insert)h Fk(text)h Fu(in)o(to)f(the)h(line)g(at)f(the)g -(curren)o(t)g(cursor)g(p)q(osition.)1762 2033 y(F)l(unction)-1861 -b Fi(int)20 b Fh(rl)p 215 2033 V 21 w(delete)p 383 2033 -V 22 w(text)k Fg(\()p Ft(int)14 b(start,)h(int)f(end)p -Fg(\))195 2088 y Fu(Delete)i(the)f(text)g(b)q(et)o(w)o(een)g -Fk(start)g Fu(and)h Fk(end)h Fu(in)f(the)g(curren)o(t)f(line.)1762 -2237 y(F)l(unction)-1861 b Fi(char)20 b(*)f Fh(rl)p 286 -2237 V 21 w(cop)n(y)p 421 2237 V 21 w(text)24 b Fg(\()p -Ft(int)14 b(start,)h(int)g(end)p Fg(\))195 2292 y Fu(Return)h(a)f(cop)o -(y)g(of)g(the)g(text)f(b)q(et)o(w)o(een)i Fk(start)f -Fu(and)g Fk(end)j Fu(in)e(the)f(curren)o(t)g(line.)1762 -2442 y(F)l(unction)-1861 b Fi(int)20 b Fh(rl)p 215 2442 -V 21 w(kill)p 311 2442 V 23 w(text)k Fg(\()p Ft(int)14 -b(start,)h(int)g(end)p Fg(\))195 2497 y Fu(Cop)o(y)i(the)g(text)f(b)q -(et)o(w)o(een)i Fk(start)f Fu(and)g Fk(end)i Fu(in)f(the)f(curren)o(t)g -(line)i(to)e(the)g(kill)i(ring,)e(app)q(ending)195 2552 -y(or)f(prep)q(ending)k(to)c(the)h(last)g(kill)i(if)e(the)g(last)g -(command)g(w)o(as)f(a)h(kill)i(command.)25 b(The)17 b(text)f(is)195 -2606 y(deleted.)26 b(If)17 b Fk(start)g Fu(is)g(less)g(than)g -Fk(end)p Fu(,)g(the)g(text)g(is)g(app)q(ended,)h(otherwise)f(prep)q -(ended.)27 b(If)17 b(the)195 2661 y(last)e(command)g(w)o(as)g(not)f(a)h -(kill,)i(a)e(new)g(kill)i(ring)f(slot)f(is)h(used.)p -eop -%%Page: 32 34 -32 33 bop 75 -58 a Fu(32)1299 b(GNU)15 b(Readline)i(Library)75 -149 y Fj(2.4.8)30 b(Character)21 b(Input)1762 305 y Fu(F)l(unction) --1861 b Fi(int)20 b Fh(rl)p 215 305 18 3 v 21 w(read)p -346 305 V 20 w(k)n(ey)k Fg(\()p Ft(void)p Fg(\))195 360 -y Fu(Return)15 b(the)g(next)g(c)o(haracter)f(a)o(v)m(ailable)i(from)e -(Readline's)j(curren)o(t)e(input)g(stream.)k(This)d(han-)195 -415 y(dles)f(input)g(inserted)f(in)o(to)g(the)g(input)h(stream)e(via)h -Fk(rl)p 1117 415 14 2 v 17 w(p)q(ending)p 1290 415 V -18 w(input)i Fu(\(see)e(Section)h(2.3)e([Read-)195 469 -y(line)h(V)l(ariables],)f(page)f(22\))g(and)g Ft(rl_stuff_char\(\))p -Fu(,)f(macros,)g(and)i(c)o(haracters)e(read)h(from)g(the)195 -524 y(k)o(eyb)q(oard.)1762 651 y(F)l(unction)-1861 b -Fi(int)20 b Fh(rl)p 215 651 18 3 v 21 w(getc)j Fg(\()p -Ft(FILE)14 b(*stream)p Fg(\))195 705 y Fu(Return)d(the)g(next)g(c)o -(haracter)f(a)o(v)m(ailable)i(from)e Fk(stream)p Fu(,)g(whic)o(h)i(is)f -(assumed)f(to)g(b)q(e)i(the)e(k)o(eyb)q(oard.)1762 832 -y(F)l(unction)-1861 b Fi(int)20 b Fh(rl)p 215 832 V 21 -w(stu\013)p 346 832 V 20 w(c)n(har)j Fg(\()p Ft(int)15 -b(c)p Fg(\))195 887 y Fu(Insert)i Fk(c)i Fu(in)o(to)d(the)h(Readline)i -(input)e(stream.)23 b(It)16 b(will)i(b)q(e)f Ft(")p Fu(read)p -Ft(")g Fu(b)q(efore)f(Readline)j(attempts)195 942 y(to)c(read)g(c)o -(haracters)f(from)h(the)g(terminal)h(with)f Ft(rl_read_key\(\))p -Fu(.)1762 1068 y(F)l(unction)-1861 b Fi(int)20 b Fh(rl)p -215 1068 V 21 w(execute)p 423 1068 V 22 w(next)j Fg(\()p 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-Ft(rl_completion_matches\(\))p Fu(\).)33 b(The)195 1169 -y(default)16 b(is)f(to)g(do)g(\014lename)h(completion.)1773 -1298 y(V)l(ariable)-1861 b Fi(rl_compentry_func_t)22 -b(*)d Fh(rl)p 678 1298 V 21 w(completion)p 973 1298 V -21 w(en)n(try)p 1126 1298 V 22 w(function)195 1352 y -Fu(This)i(is)f(a)g(p)q(oin)o(ter)g(to)f(the)h(generator)g(function)g -(for)g Ft(rl_completion_matches\(\))p Fu(.)31 b(If)20 -b(the)195 1407 y(v)m(alue)13 b(of)f Ft(rl_completion_entry_fun)o(ction) -d Fu(is)j Ft(NULL)f Fu(then)h(the)g(default)h(\014lename)g(generator) -195 1462 y(function,)j Ft(rl_filename_completion_f)o(unction)o(\(\))p -Fu(,)c(is)k(used.)75 1582 y Fj(2.6.2)30 b(Completion)20 -b(F)-5 b(unctions)137 1682 y Fu(Here)16 b(is)f(the)h(complete)g(list)g -(of)e(callable)k(completion)e(functions)g(presen)o(t)f(in)h(Readline.) -1762 1810 y(F)l(unction)-1861 b Fi(int)20 b Fh(rl)p 215 -1810 V 21 w(complete)p 460 1810 V 21 w(in)n(ternal)k -Fg(\()p Ft(int)15 b(what_to_do)p Fg(\))195 1865 y Fu(Complete)k(the)g -(w)o(ord)f(at)g(or)g(b)q(efore)h(p)q(oin)o(t.)31 b Fk(what)p -1108 1865 14 2 v 16 w(to)p 1165 1865 V 16 w(do)21 b Fu(sa)o(ys)d(what)g -(to)g(do)h(with)g(the)g(com-)195 1920 y(pletion.)j(A)16 -b(v)m(alue)h(of)e(`)p Ft(?)p Fu(')g(means)g(list)i(the)e(p)q(ossible)j -(completions.)k(`)p Ft(TAB)p Fu(')14 b(means)i(do)f(standard)195 -1975 y(completion.)22 b(`)p Ft(*)p Fu(')15 b(means)g(insert)h(all)h(of) -e(the)h(p)q(ossible)h(completions.)22 b(`)p Ft(!)p Fu(')15 -b(means)g(to)g(displa)o(y)i(all)195 2029 y(of)g(the)g(p)q(ossible)i -(completions,)f(if)g(there)f(is)h(more)f(than)g(one,)g(as)g(w)o(ell)h -(as)f(p)q(erforming)h(partial)195 2084 y(completion.)1762 -2213 y(F)l(unction)-1861 b Fi(int)20 b Fh(rl)p 215 2213 -18 3 v 21 w(complete)j Fg(\()p Ft(int)14 b(ignore,)g(int)h -(invoking_key)p Fg(\))195 2268 y Fu(Complete)21 b(the)g(w)o(ord)e(at)h -(or)g(b)q(efore)h(p)q(oin)o(t.)37 b(Y)l(ou)21 b(ha)o(v)o(e)f(supplied)j -(the)d(function)i(that)e(do)q(es)195 2322 y(the)d(initial)h(simple)g -(matc)o(hing)f(selection)h(algorithm)e(\(see)g Ft -(rl_completion_matches\(\))e Fu(and)195 2377 y Ft -(rl_completion_entry_functi)o(on)p Fu(\).)25 b(The)18 -b(default)h(is)f(to)f(do)h(\014lename)h(completion.)29 -b(This)195 2432 y(calls)16 b Ft(rl_complete_internal\(\))c -Fu(with)k(an)f(argumen)o(t)f(dep)q(ending)k(on)d Fk(in)o(v)o(oking)p -1657 2432 14 2 v 17 w(k)o(ey)p Fu(.)1762 2560 y(F)l(unction)-1861 -b Fi(int)20 b Fh(rl)p 215 2560 18 3 v 21 w(p)r(ossible)p -433 2560 V 20 w(completions)j Fg(\()p Ft(int)15 b(count,)f(int)h -(invoking_key)p Fg(\))195 2615 y Fu(List)21 b(the)f(p)q(ossible)i -(completions.)36 b(See)21 b(description)h(of)e Ft(rl_complete)13 -b(\(\))p Fu(.)35 b(This)21 b(calls)g Ft(rl_)195 2670 -y(complete_internal\(\))13 b Fu(with)i(an)g(argumen)o(t)g(of)f(`)p -Ft(?)p Fu('.)p eop -%%Page: 39 41 -39 40 bop 75 -58 a Fu(Chapter)15 b(2:)k(Programming)c(with)g(GNU)g -(Readline)844 b(39)1762 149 y(F)l(unction)-1861 b Fi(int)20 -b Fh(rl)p 215 149 18 3 v 21 w(insert)p 378 149 V 21 w(completions)j -Fg(\()p Ft(int)14 b(count,)g(int)h(invoking_key)p Fg(\))195 -204 y Fu(Insert)i(the)g(list)h(of)e(p)q(ossible)j(completions)e(in)o -(to)g(the)g(line,)i(deleting)f(the)f(partially-completed)195 -259 y(w)o(ord.)k(See)c(description)g(of)e Ft(rl_complete\(\))p -Fu(.)20 b(This)d(calls)g Ft(rl_complete_internal\(\))c -Fu(with)195 314 y(an)i(argumen)o(t)g(of)f(`)p Ft(*)p -Fu('.)1762 445 y(F)l(unction)-1861 b Fi(char)20 b(**)f -Fh(rl)p 312 445 V 21 w(completion)p 607 445 V 21 w(matc)n(hes)j -Fg(\()p Ft(const)15 b(char)f(*text,)283 500 y(rl_compentry_func_t)e -(*entry_func)p Fg(\))195 554 y Fu(Returns)17 b(an)f(arra)o(y)f(of)g -Ft(\(char)g(*\))h Fu(whic)o(h)h(is)f(a)g(list)h(of)f(completions)h(for) -e Fk(text)p Fu(.)23 b(If)16 b(there)g(are)g(no)195 609 -y(completions,)i(returns)g Ft(NULL)p Fu(.)25 b(The)17 -b(\014rst)g(en)o(try)g(in)h(the)f(returned)h(arra)o(y)e(is)i(the)f -(substitution)195 664 y(for)c Fk(text)p Fu(.)18 b(The)c(remaining)g(en) 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-(completion)h(in)f(the)g(general)g(case.)21 b(Note)15 -b(that)g(comple-)195 1250 y(tion)i(in)h(Bash)f(is)g(a)f(little)i -(di\013eren)o(t)f(b)q(ecause)h(of)f(all)g(the)g(pathnames)g(that)f(m)o -(ust)g(b)q(e)i(follo)o(w)o(ed)195 1305 y(when)f(lo)q(oking)g(up)g -(completions)h(for)d(a)i(command.)23 b(The)17 b(Bash)f(source)h(is)g(a) -f(useful)h(reference)195 1360 y(for)e(writing)g(custom)g(completion)h -(functions.)1762 1491 y(F)l(unction)-1861 b Fi(char)20 -b(*)f Fh(rl)p 286 1491 V 21 w(username)p 547 1491 V 19 -w(completion)p 840 1491 V 21 w(function)k Fg(\()p Ft(const)14 -b(char)g(*text,)283 1546 y(int)g(state)p Fg(\))195 1600 -y Fu(A)g(completion)i(generator)d(for)h(usernames.)19 -b Fk(text)c Fu(con)o(tains)f(a)g(partial)h(username)f(preceded)i(b)o(y) -195 1655 y(a)f(random)g(c)o(haracter)f(\(usually)j(`)p -Ft(~)p Fu('\).)i(As)c(with)g(all)i(completion)f(generators,)e -Fk(state)j Fu(is)f(zero)f(on)195 1710 y(the)g(\014rst)g(call)h(and)g -(non-zero)f(for)g(subsequen)o(t)h(calls.)75 1831 y Fj(2.6.3)30 -b(Completion)20 b(V)-5 b(ariables)1773 1991 y Fu(V)l(ariable)-1861 -b Fi(rl_compentry_func_t)22 b(*)d Fh(rl)p 678 1991 V -21 w(completion)p 973 1991 V 21 w(en)n(try)p 1126 1991 -V 22 w(function)195 2046 y Fu(A)e(p)q(oin)o(ter)g(to)f(the)h(generator) -f(function)h(for)f Ft(rl_completion_matches\(\))p Fu(.)22 -b Ft(NULL)16 b Fu(means)h(to)195 2101 y(use)f Ft -(rl_filename_completion_)o(functio)o(n\(\))p Fu(,)c(the)j(default)h -(\014lename)g(completer.)1773 2232 y(V)l(ariable)-1861 -b Fi(rl_completion_func_t)22 b(*)d Fh(rl)p 704 2232 V -22 w(attempted)p 985 2232 V 20 w(completion)p 1279 2232 -V 21 w(function)195 2286 y Fu(A)e(p)q(oin)o(ter)h(to)f(an)g(alternativ) -o(e)h(function)g(to)f(create)g(matc)o(hes.)26 b(The)18 -b(function)g(is)g(called)h(with)195 2341 y Fk(text)p -Fu(,)11 b Fk(start)p Fu(,)g(and)h Fk(end)p Fu(.)19 b -Fk(start)11 b Fu(and)h Fk(end)i Fu(are)d(indices)i(in)g -Ft(rl_line_buffer)c Fu(de\014ning)k(the)f(b)q(ound-)195 -2396 y(aries)h(of)g Fk(text)p 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-(to)f(a)g(function)h(that)e(will)j(quote)e(a)g(\014lename)i(in)f(an)f -(application-sp)q(eci\014)q(c)j(fashion.)195 259 y(This)h(is)g(called)i -(if)e(\014lename)g(completion)h(is)f(b)q(eing)h(attempted)e(and)h(one)g -(of)f(the)h(c)o(haracters)195 314 y(in)d Ft -(rl_filename_quote_characters)c Fu(app)q(ears)k(in)g(a)g(completed)g -(\014lename.)25 b(The)17 b(function)195 369 y(is)i(called)i(with)e -Fk(text)p Fu(,)g Fk(matc)o(h)p 722 369 14 2 v 16 w(t)o(yp)q(e)p -Fu(,)g(and)g Fk(quote)p 1059 369 V 17 w(p)q(oin)o(ter)p -Fu(.)31 b(The)19 b Fk(text)h Fu(is)f(the)g(\014lename)h(to)e(b)q(e)195 -423 y(quoted.)39 b(The)21 b Fk(matc)o(h)p 607 423 V 16 -w(t)o(yp)q(e)j Fu(is)e(either)g Ft(SINGLE_MATCH)p Fu(,)f(if)h(there)f -(is)h(only)g(one)g(completion)195 478 y(matc)o(h,)15 -b(or)g Ft(MULT_MATCH)p Fu(.)20 b(Some)c(functions)g(use)g(this)g(to)f -(decide)j(whether)e(or)f(not)g(to)g(insert)h(a)195 533 -y(closing)c(quote)e(c)o(haracter.)18 b(The)11 b Fk(quote)p -877 533 V 16 w(p)q(oin)o(ter)k Fu(is)c(a)f(p)q(oin)o(ter)i(to)e(an)o(y) -g(op)q(ening)i(quote)f(c)o(haracter)195 588 y(the)k(user)h(t)o(yp)q -(ed.)k(Some)15 b(functions)h(c)o(ho)q(ose)f(to)g(reset)g(this)g(c)o -(haracter.)1773 690 y(V)l(ariable)-1861 b Fi(rl_dequote_func_t)22 -b(*)d Fh(rl)p 626 690 18 3 v 21 w(\014lename)p 855 690 -V 20 w(dequoting)p 1122 690 V 21 w(function)195 744 y -Fu(A)c(p)q(oin)o(ter)g(to)f(a)h(function)g(that)g(will)h(remo)o(v)o(e)e -(application-sp)q(eci\014)q(c)k(quoting)d(c)o(haracters)f(from)195 -799 y(a)i(\014lename)h(b)q(efore)g(completion)g(is)g(attempted,)f(so)f -(those)h(c)o(haracters)g(do)g(not)g(in)o(terfere)h(with)195 -854 y(matc)o(hing)i(the)g(text)g(against)f(names)h(in)h(the)f -(\014lesystem.)33 b(It)19 b(is)g(called)i(with)e Fk(text)p -Fu(,)g(the)g(text)195 909 y(of)i(the)g(w)o(ord)g(to)g(b)q(e)h -(dequoted,)h(and)e Fk(quote)p 1009 909 14 2 v 17 w(c)o(har)p -Fu(,)h(whic)o(h)g(is)g(the)f(quoting)h(c)o(haracter)f(that)195 -964 y(delimits)d(the)e(\014lename)i(\(usually)f(`)p Ft(')p -Fu(')f(or)f(`)p Ft(")p Fu('\).)22 b(If)17 b Fk(quote)p -1187 964 V 16 w(c)o(har)i Fu(is)e(zero,)f(the)g(\014lename)i(w)o(as)d -(not)195 1018 y(in)h(an)f(em)o(b)q(edded)i(string.)1773 -1120 y(V)l(ariable)-1861 b Fi(rl_linebuf_func_t)22 b(*)d -Fh(rl)p 626 1120 18 3 v 21 w(c)n(har)p 754 1120 V 21 -w(is)p 813 1120 V 21 w(quoted)p 1005 1120 V 21 w(p)195 -1175 y Fu(A)f(p)q(oin)o(ter)h(to)f(a)g(function)h(to)f(call)i(that)d -(determines)j(whether)e(or)g(not)g(a)g(sp)q(eci\014c)j(c)o(haracter)195 -1230 y(in)d(the)f(line)i(bu\013er)e(is)h(quoted,)g(according)f(to)g -(whatev)o(er)f(quoting)i(mec)o(hanism)g(the)f(program)195 -1284 y(calling)e(readline)h(uses.)j(The)14 b(function)h(is)f(called)h -(with)f(t)o(w)o(o)e(argumen)o(ts:)19 b Fk(text)p Fu(,)13 -b(the)g(text)h(of)f(the)195 1339 y(line,)k(and)e Fk(index)p -Fu(,)i(the)e(index)i(of)e(the)g(c)o(haracter)g(in)h(the)g(line.)22 -b(It)15 b(is)h(used)g(to)f(decide)i(whether)e(a)195 1394 -y(c)o(haracter)f(found)i(in)g Ft(rl_completer_word_break_)o(charact)o -(ers)c Fu(should)k(b)q(e)g(used)g(to)e(break)195 1449 -y(w)o(ords)g(for)h(the)g(completer.)1773 1551 y(V)l(ariable)-1861 -b Fi(int)20 b Fh(rl)p 215 1551 V 21 w(completion)p 510 -1551 V 21 w(query)p 673 1551 V 21 w(items)195 1605 y -Fu(Up)e(to)g(this)g(man)o(y)g(items)g(will)i(b)q(e)f(displa)o(y)o(ed)g -(in)g(resp)q(onse)g(to)e(a)h(p)q(ossible-completions)j(call.)195 -1660 y(After)14 b(that,)f(w)o(e)h(ask)g(the)h(user)f(if)h(she)f(is)h -(sure)g(she)f(w)o(an)o(ts)f(to)h(see)h(them)f(all.)20 -b(The)15 b(default)g(v)m(alue)195 1715 y(is)h(100.)1773 -1817 y(V)l(ariable)-1861 b Fi(const)20 b(char)g(*)f Fh(rl)p -436 1817 V 21 w(basic)p 580 1817 V 21 w(w)n(ord)p 725 -1817 V 21 w(break)p 886 1817 V 20 w(c)n(haracters)195 -1872 y Fu(The)j(basic)h(list)g(of)f(c)o(haracters)f(that)g(signal)i(a)f -(break)g(b)q(et)o(w)o(een)g(w)o(ords)g(for)f(the)h(completer)195 -1926 y(routine.)30 b(The)19 b(default)g(v)m(alue)h(of)e(this)h(v)m -(ariable)h(is)f(the)g(c)o(haracters)f(whic)o(h)h(break)g(w)o(ords)f -(for)195 1981 y(completion)e(in)g(Bash,)f(i.e.,)g Ft(")g -(\\t\\n\\"\\\\'`@$><=;|&{\(")p Fu(.)1773 2083 y(V)l(ariable)-1861 -b Fi(const)20 b(char)g(*)f Fh(rl)p 436 2083 V 21 w(basic)p -580 2083 V 21 w(quote)p 740 2083 V 21 w(c)n(haracters)195 -2138 y Fu(List)d(of)f(quote)g(c)o(haracters)f(whic)o(h)i(can)f(cause)h -(a)f(w)o(ord)f(break.)1773 2239 y(V)l(ariable)-1861 b -Fi(const)20 b(char)g(*)f Fh(rl)p 436 2239 V 21 w(completer)p -705 2239 V 21 w(w)n(ord)p 850 2239 V 20 w(break)p 1010 -2239 V 20 w(c)n(haracters)195 2294 y Fu(The)33 b(list)g(of)f(c)o -(haracters)g(that)f(signal)j(a)e(break)g(b)q(et)o(w)o(een)h(w)o(ords)f -(for)g Ft(rl_complete_)195 2349 y(internal\(\))p Fu(.)18 -b(The)e(default)g(list)g(is)f(the)h(v)m(alue)g(of)f Ft -(rl_basic_word_break_chara)o(cters)p Fu(.)1773 2451 y(V)l(ariable)-1861 -b Fi(const)20 b(char)g(*)f Fh(rl)p 436 2451 V 21 w(completer)p -705 2451 V 21 w(quote)p 865 2451 V 20 w(c)n(haracters)195 -2506 y Fu(List)h(of)e(c)o(haracters)h(whic)o(h)g(can)h(b)q(e)f(used)h -(to)e(quote)h(a)g(substring)g(of)g(the)g(line.)33 b(Completion)195 -2560 y(o)q(ccurs)13 b(on)h(the)f(en)o(tire)g(substring,)h(and)f(within) -i(the)e(substring)g Ft(rl_completer_word_break_)195 2615 -y(characters)j Fu(are)h(treated)g(as)h(an)o(y)f(other)g(c)o(haracter,)g -(unless)i(they)e(also)h(app)q(ear)g(within)h(this)195 -2670 y(list.)p eop -%%Page: 41 43 -41 42 bop 75 -58 a Fu(Chapter)15 b(2:)k(Programming)c(with)g(GNU)g -(Readline)844 b(41)1773 149 y(V)l(ariable)-1861 b Fi(const)20 -b(char)g(*)f Fh(rl)p 436 149 18 3 v 21 w(\014lename)p -665 149 V 20 w(quote)p 824 149 V 21 w(c)n(haracters)195 -204 y Fu(A)e(list)h(of)e(c)o(haracters)g(that)g(cause)h(a)g(\014lename) -h(to)e(b)q(e)i(quoted)e(b)o(y)h(the)g(completer)h(when)f(they)195 -259 y(app)q(ear)e(in)h(a)f(completed)h(\014lename.)21 -b(The)16 b(default)g(is)f(the)h(n)o(ull)g(string.)1773 -376 y(V)l(ariable)-1861 b Fi(const)20 b(char)g(*)f Fh(rl)p -436 376 V 21 w(sp)r(ecial)p 623 376 V 22 w(pre\014xes)195 -431 y Fu(The)14 b(list)h(of)e(c)o(haracters)g(that)g(are)h(w)o(ord)f -(break)h(c)o(haracters,)f(but)h(should)h(b)q(e)f(left)g(in)h -Fk(text)f Fu(when)195 486 y(it)f(is)f(passed)h(to)f(the)g(completion)h -(function.)20 b(Programs)11 b(can)h(use)h(this)g(to)f(help)h(determine) -h(what)195 541 y(kind)i(of)e(completing)i(to)e(do.)19 -b(F)l(or)14 b(instance,)i(Bash)e(sets)h(this)g(v)m(ariable)h(to)e -Ft(")p Fu($)p Ft(@")g Fu(so)g(that)g(it)h(can)195 596 -y(complete)h(shell)h(v)m(ariables)f(and)g(hostnames.)1773 -713 y(V)l(ariable)-1861 b Fi(int)20 b Fh(rl)p 215 713 -V 21 w(completion)p 510 713 V 21 w(app)r(end)p 715 713 -V 19 w(c)n(haracter)195 768 y Fu(When)d(a)f(single)i(completion)g -(alternativ)o(e)f(matc)o(hes)f(at)g(the)h(end)g(of)f(the)h(command)f -(line,)j(this)195 823 y(c)o(haracter)10 b(is)h(app)q(ended)i(to)d(the)g -(inserted)i(completion)g(text.)18 b(The)11 b(default)g(is)g(a)g(space)g -(c)o(haracter)195 877 y(\(`)j('\).)19 b(Setting)14 b(this)f(to)g(the)g -(n)o(ull)i(c)o(haracter)e(\(`)p Ft(\\0)p Fu('\))e(prev)o(en)o(ts)i(an)o -(ything)h(b)q(eing)h(app)q(ended)f(auto-)195 932 y(matically)l(.)21 -b(This)15 b(can)f(b)q(e)h(c)o(hanged)g(in)g(custom)f(completion)i -(functions)f(to)f(pro)o(vide)h(the)f(\\most)195 987 y(sensible)i(w)o -(ord)c(separator)h(c)o(haracter")f(according)i(to)f(an)h -(application-sp)q(eci\014c)j(command)c(line)195 1042 -y(syn)o(tax)h(sp)q(eci\014cation.)1773 1159 y(V)l(ariable)-1861 -b Fi(int)20 b Fh(rl)p 215 1159 V 21 w(ignore)p 391 1159 -V 20 w(completion)p 685 1159 V 21 w(duplicates)195 1214 -y Fu(If)15 b(non-zero,)h(then)f(disallo)o(w)h(duplicates)h(in)f(the)g -(matc)o(hes.)j(Default)c(is)h(1.)1773 1331 y(V)l(ariable)-1861 -b Fi(int)20 b Fh(rl)p 215 1331 V 21 w(\014lename)p 444 -1331 V 20 w(completion)p 738 1331 V 21 w(desired)195 -1386 y Fu(Non-zero)c(means)g(that)f(the)h(results)g(of)g(the)g(matc)o -(hes)f(are)h(to)f(b)q(e)i(treated)e(as)g(\014lenames.)23 -b(This)195 1441 y(is)14 b Fl(always)j Fu(zero)c(on)g(en)o(try)l(,)g -(and)h(can)f(only)h(b)q(e)g(c)o(hanged)f(within)i(a)e(completion)h(en)o -(try)f(generator)195 1496 y(function.)38 b(If)21 b(it)g(is)g(set)g(to)f -(a)g(non-zero)h(v)m(alue,)i(directory)e(names)g(ha)o(v)o(e)g(a)f(slash) -h(app)q(ended)195 1551 y(and)d(Readline)i(attempts)c(to)h(quote)g -(completed)i(\014lenames)f(if)g(they)g(con)o(tain)g(an)o(y)f(c)o -(haracters)195 1605 y(in)f Ft(rl_filename_quote_character)o(s)d -Fu(and)i Ft(rl_filename_quoting_desired)d Fu(is)k(set)f(to)f(a)195 -1660 y(non-zero)h(v)m(alue.)1773 1778 y(V)l(ariable)-1861 -b Fi(int)20 b Fh(rl)p 215 1778 V 21 w(\014lename)p 444 -1778 V 20 w(quoting)p 653 1778 V 21 w(desired)195 1832 -y Fu(Non-zero)14 b(means)g(that)f(the)i(results)f(of)g(the)g(matc)o -(hes)f(are)h(to)f(b)q(e)i(quoted)f(using)h(double)g(quotes)195 -1887 y(\(or)c(an)h(application-sp)q(eci\014)q(c)j(quoting)d(mec)o -(hanism\))g(if)h(the)f(completed)h(\014lename)g(con)o(tains)f(an)o(y) -195 1942 y(c)o(haracters)i(in)i Ft(rl_filename_quote_chars)p -Fu(.)h(This)f(is)f Fl(always)k Fu(non-zero)d(on)f(en)o(try)l(,)f(and)i -(can)195 1997 y(only)c(b)q(e)g(c)o(hanged)g(within)h(a)f(completion)g -(en)o(try)g(generator)e(function.)20 b(The)12 b(quoting)g(is)g -(e\013ected)195 2052 y(via)j(a)g(call)i(to)d(the)i(function)g(p)q(oin)o -(ted)g(to)e(b)o(y)h Ft(rl_filename_quoting_function)p -Fu(.)1773 2169 y(V)l(ariable)-1861 b Fi(int)20 b Fh(rl)p -215 2169 V 21 w(attempted)p 495 2169 V 20 w(completion)p -789 2169 V 21 w(o)n(v)n(er)195 2224 y Fu(If)47 b(an)g(application-sp)q -(eci\014)q(c)j(completion)e(function)g(assigned)f(to)g -Ft(rl_attempted_)195 2279 y(completion_function)24 b -Fu(sets)i(this)h(v)m(ariable)h(to)e(a)g(non-zero)h(v)m(alue,)j -(Readline)f(will)f(not)195 2333 y(p)q(erform)e(its)h(default)f -(\014lename)i(completion)f(if)g(the)f(application's)i(completion)f -(function)195 2388 y(returns)15 b(no)g(matc)o(hes.)20 -b(It)15 b(should)h(b)q(e)g(set)f(only)h(b)o(y)f(an)g(application's)h -(completion)h(function.)1773 2506 y(V)l(ariable)-1861 -b Fi(int)20 b Fh(rl)p 215 2506 V 21 w(completion)p 510 -2506 V 21 w(t)n(yp)r(e)195 2560 y Fu(Set)e(to)e(a)i(c)o(haracter)f -(describing)i(the)e(t)o(yp)q(e)h(of)f(completion)i(Readline)h(is)e -(curren)o(tly)g(attempt-)195 2615 y(ing;)g(see)f(the)f(description)i -(of)f Ft(rl_complete_internal\(\))c Fu(\(see)k(Section)h(2.6.2)d -([Completion)195 2670 y(F)l(unctions],)g(page)g(38\))g(for)f(the)h -(list)h(of)f(c)o(haracters.)p eop -%%Page: 42 44 -42 43 bop 75 -58 a Fu(42)1299 b(GNU)15 b(Readline)i(Library)1773 -149 y(V)l(ariable)-1861 b Fi(int)20 b Fh(rl)p 215 149 -18 3 v 21 w(inhibit)p 399 149 V 23 w(completion)195 204 -y Fu(If)14 b(this)h(v)m(ariable)g(is)g(non-zero,)f(completion)i(is)e -(inhibited.)22 b(The)15 b(completion)g(c)o(haracter)e(will)j(b)q(e)195 -259 y(inserted)g(as)f(an)o(y)g(other)g(b)q(ound)h(to)e -Ft(self-insert)p Fu(.)1773 376 y(V)l(ariable)-1861 b -Fi(rl_compignore_func_t)22 b(*)d Fh(rl)p 704 376 V 22 -w(ignore)p 881 376 V 20 w(some)p 1028 376 V 19 w(completions)p -1344 376 V 21 w(function)195 431 y Fu(This)g(function,)i(if)e -(de\014ned,)i(is)e(called)h(b)o(y)f(the)g(completer)g(when)h(real)f -(\014lename)h(completion)195 486 y(is)e(done,)f(after)f(all)i(the)f -(matc)o(hing)g(names)g(ha)o(v)o(e)g(b)q(een)h(generated.)25 -b(It)17 b(is)h(passed)f(a)g Ft(NULL)f Fu(ter-)195 540 -y(minated)g(arra)o(y)e(of)h(matc)o(hes.)20 b(The)c(\014rst)f(elemen)o -(t)h(\()p Ft(matches[0])p Fu(\))d(is)j(the)g(maximal)g(substring)195 -595 y(common)e(to)g(all)h(matc)o(hes.)k(This)c(function)g(can)g -(re-arrange)f(the)g(list)h(of)f(matc)o(hes)g(as)g(required,)195 -650 y(but)h(eac)o(h)h(elemen)o(t)g(deleted)g(from)f(the)g(arra)o(y)f(m) -o(ust)g(b)q(e)i(freed.)1773 767 y(V)l(ariable)-1861 b -Fi(rl_icppfunc_t)21 b(*)e Fh(rl)p 521 767 V 21 w(directory)p -769 767 V 22 w(completion)p 1065 767 V 21 w(ho)r(ok)195 -822 y Fu(This)k(function,)i(if)e(de\014ned,)j(is)d(allo)o(w)o(ed)g(to)f -(mo)q(dify)h(the)g(directory)g(p)q(ortion)g(of)f(\014lenames)195 -877 y(Readline)f(completes.)29 b(It)19 b(is)f(called)i(with)f(the)f -(address)h(of)e(a)h(string)h(\(the)f(curren)o(t)g(directory)195 -932 y(name\))g(as)g(an)h(argumen)o(t,)f(and)h(ma)o(y)f(mo)q(dify)h -(that)f(string.)30 b(If)19 b(the)f(string)h(is)g(replaced)h(with)195 -986 y(a)g(new)g(string,)h(the)f(old)g(v)m(alue)h(should)g(b)q(e)g -(freed.)34 b(An)o(y)20 b(mo)q(di\014ed)i(directory)e(name)g(should)195 -1041 y(ha)o(v)o(e)14 b(a)g(trailing)i(slash.)k(The)15 -b(mo)q(di\014ed)h(v)m(alue)g(will)g(b)q(e)f(displa)o(y)o(ed)h(as)e -(part)g(of)h(the)f(completion,)195 1096 y(replacing)h(the)g(directory)f -(p)q(ortion)g(of)g(the)g(pathname)g(the)h(user)f(t)o(yp)q(ed.)20 -b(It)14 b(returns)g(an)g(in)o(teger)195 1151 y(that)i(should)h(b)q(e)g -(non-zero)g(if)g(the)g(function)g(mo)q(di\014es)h(its)e(directory)h -(argumen)o(t.)23 b(It)17 b(could)g(b)q(e)195 1205 y(used)f(to)e(expand) -i(sym)o(b)q(olic)h(links)f(or)f(shell)i(v)m(ariables)f(in)g(pathnames.) -1773 1323 y(V)l(ariable)-1861 b Fi(rl_compdisp_func_t)22 -b(*)d Fh(rl)p 652 1323 V 21 w(completion)p 947 1323 V -21 w(displa)n(y)p 1141 1323 V 22 w(matc)n(hes)p 1366 -1323 V 21 w(ho)r(ok)195 1377 y Fu(If)11 b(non-zero,)h(then)f(this)h(is) -f(the)g(address)g(of)g(a)g(function)g(to)g(call)h(when)f(completing)i -(a)d(w)o(ord)h(w)o(ould)195 1432 y(normally)h(displa)o(y)g(the)f(list)h -(of)f(p)q(ossible)h(matc)o(hes.)18 b(This)12 b(function)g(is)g(called)g -(in)g(lieu)h(of)e(Readline)195 1487 y(displa)o(ying)21 -b(the)d(list.)32 b(It)19 b(tak)o(es)f(three)h(argumen)o(ts:)26 -b(\()p Ft(char)14 b(**)p Fk(matc)o(hes)p Fu(,)19 b Ft(int)f -Fk(n)o(um)p 1688 1487 14 2 v 17 w(matc)o(hes)p Fu(,)195 -1542 y Ft(int)13 b Fk(max)p 368 1542 V 16 w(length)p -Fu(\))i(where)f Fk(matc)o(hes)h Fu(is)f(the)g(arra)o(y)f(of)g(matc)o -(hing)h(strings,)g Fk(n)o(um)p 1578 1542 V 16 w(matc)o(hes)i -Fu(is)e(the)195 1597 y(n)o(um)o(b)q(er)h(of)f(strings)h(in)h(that)e -(arra)o(y)l(,)f(and)i Fk(max)p 1012 1597 V 16 w(length)h -Fu(is)f(the)g(length)g(of)g(the)f(longest)h(string)g(in)195 -1651 y(that)e(arra)o(y)l(.)19 b(Readline)d(pro)o(vides)f(a)e(con)o(v)o -(enience)j(function,)f Ft(rl_display_match_list)p Fu(,)c(that)195 -1706 y(tak)o(es)17 b(care)g(of)g(doing)h(the)f(displa)o(y)i(to)d -(Readline's)k(output)d(stream.)26 b(That)16 b(function)j(ma)o(y)d(b)q -(e)195 1761 y(called)h(from)d(this)i(ho)q(ok.)75 1873 -y Fj(2.6.4)30 b(A)21 b(Short)f(Completion)g(Example)137 -1969 y Fu(Here)11 b(is)f(a)g(small)h(application)h(demonstrating)e(the) -g(use)h(of)e(the)i(GNU)f(Readline)i(library)l(.)19 b(It)11 -b(is)f(called)75 2024 y Ft(fileman)p Fu(,)17 b(and)h(the)g(source)g(co) -q(de)g(resides)h(in)f(`)p Ft(examples/fileman.c)p Fu('.)25 -b(This)18 b(sample)g(application)75 2079 y(pro)o(vides)c(completion)g -(of)e(command)h(names,)g(line)i(editing)g(features,)d(and)i(access)f -(to)f(the)h(history)h(list.)p eop 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Fe(.)s(.)e(.)g(.)g(.)g(.)h(.)f(.)g(.) -g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g -(.)g(.)g(.)21 b Ff(26)75 926 y Fd(rl_mark)t Fe(.)t(.)6 -b(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g -(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.) -17 b Ff(22)75 972 y Fd(rl_message)7 b Fe(.)f(.)g(.)h(.)f(.)g(.)g(.)g(.) -g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g -(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)24 b Ff(31)75 1017 y Fd(rl_modifyi)o(ng) -6 b Fe(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g -(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)22 -b Ff(30)75 1063 y Fd(rl_named_f)o(un)o(cti)o(on)5 b Fe(.)s(.)i(.)f(.)g -(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.) -g(.)g(.)g(.)g(.)19 b Ff(28)75 1109 y Fd(rl_num_cha)o(rs)o(_to)o(_r)o -(ead)s Fe(.)s(.)6 b(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g -(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)16 b Ff(22)75 1154 y Fd(rl_numeric)o(_a) -o(rg)8 b Fe(.)s(.)e(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g -(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)21 -b Ff(26)75 1200 y Fd(rl_on_new_)o(li)o(ne)8 b Fe(.)s(.)e(.)g(.)g(.)g(.) -h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g -(.)h(.)f(.)g(.)g(.)g(.)21 b Ff(30)75 1246 y Fd(rl_on_new_)o(li)o(ne_)o -(wi)o(th_)o(pro)o(mp)o(t)8 b Fe(.)t(.)e(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g -(.)g(.)g(.)g(.)h(.)f(.)21 b Ff(30)75 1291 y Fd(rl_outstre)o(am)6 -b Fe(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.) -h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)22 -b Ff(23)75 1337 y Fd(rl_parse_a)o(nd)o(_bi)o(nd)5 b Fe(.)s(.)i(.)f(.)g -(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.) -g(.)g(.)g(.)g(.)19 b Ff(28)75 1383 y Fd(rl_pending)o(_i)o(npu)o(t)6 -b Fe(.)t(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.) -g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)h(.)19 b Ff(22)75 -1428 y Fd(rl_point)s Fe(.)s(.)7 b(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g -(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.) -g(.)g(.)g(.)g(.)h(.)f(.)g(.)16 b Ff(22)75 1474 y Fd(rl_possibl)o(e_)o -(com)o(pl)o(eti)o(ons)7 b Fe(.)f(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.) -h(.)f(.)g(.)g(.)g(.)g(.)g(.)h(.)23 b Ff(38)75 1520 y -Fd(rl_pre_inp)o(ut)o(_ho)o(ok)5 b Fe(.)s(.)i(.)f(.)g(.)g(.)g(.)g(.)h(.) -f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)19 -b Ff(23)75 1566 y Fd(rl_prep_te)o(rm)o(_fu)o(nc)o(tio)o(n)9 -b Fe(.)d(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.) -f(.)g(.)g(.)g(.)25 b Ff(24)75 1611 y Fd(rl_prep_te)o(rm)o(ina)o(l)6 -b Fe(.)t(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.) -g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)h(.)19 b Ff(32)75 -1657 y Fd(rl_prompt)8 b Fe(.)e(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g -(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.) -g(.)g(.)g(.)g(.)h(.)24 b Ff(22)75 1703 y Fd(rl_read_in)o(it)o(_fi)o(le) -5 b Fe(.)s(.)i(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g -(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)19 b Ff(28)75 -1748 y Fd(rl_read_ke)o(y)7 b Fe(.)f(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h -(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.) -h(.)f(.)g(.)g(.)23 b Ff(32)75 1794 y Fd(rl_readlin)o(e_)o(nam)o(e)6 -b Fe(.)t(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.) -g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)h(.)19 b Ff(23)75 -1840 y Fd(rl_readlin)o(e_)o(sta)o(te)5 b Fe(.)s(.)i(.)f(.)g(.)g(.)g(.)g -(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.) -g(.)19 b Ff(24)75 1885 y Fd(rl_redispl)o(ay)6 b Fe(.)g(.)g(.)g(.)h(.)f -(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.) -h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)22 b Ff(30)75 1931 y -Fd(rl_redispl)o(ay)o(_fu)o(nc)o(tio)o(n)9 b Fe(.)d(.)g(.)g(.)h(.)f(.)g -(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)25 -b Ff(24)75 1977 y Fd(rl_reset_a)o(ft)o(er_)o(si)o(gna)o(l)9 -b Fe(.)d(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.) -f(.)g(.)g(.)g(.)25 b Ff(37)75 2022 y Fd(rl_reset_l)o(in)o(e_s)o(ta)o -(te)t Fe(.)s(.)6 b(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h -(.)f(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)17 b Ff(30)75 2068 -y Fd(rl_reset_t)o(er)o(min)o(al)5 b Fe(.)s(.)i(.)f(.)g(.)g(.)g(.)g(.)h -(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.) -19 b Ff(32)75 2114 y Fd(rl_resize_)o(te)o(rmi)o(na)o(l)5 -b Fe(.)s(.)i(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.) -g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)18 b Ff(37)75 2159 y -Fd(rl_restore)o(_p)o(rom)o(pt)5 b Fe(.)s(.)i(.)f(.)g(.)g(.)g(.)g(.)h(.) -f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)19 -b Ff(31)75 2205 y Fd(rl_save_pr)o(om)o(pt)8 b Fe(.)s(.)e(.)g(.)g(.)g(.) -h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g -(.)h(.)f(.)g(.)g(.)g(.)21 b Ff(31)75 2251 y Fd(rl_set_key)7 -b Fe(.)f(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.) -g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)24 -b Ff(28)1012 149 y Fd(rl_set_keym)o(ap)8 b Fe(.)s(.)e(.)h(.)f(.)g(.)g -(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.) -g(.)g(.)g(.)h(.)f(.)g(.)22 b Ff(27)1012 195 y Fd(rl_set_scre)o(en)o -(_si)o(ze)t Fe(.)t(.)6 b(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.) -g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)19 b Ff(37)1012 -242 y Fd(rl_set_sign)o(al)o(s)8 b Fe(.)s(.)e(.)h(.)f(.)g(.)g(.)g(.)g(.) -h(.)f(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g -(.)g(.)h(.)21 b Ff(37)1012 288 y Fd(rl_special_)o(pr)o(efi)o(xe)o(s)t -Fe(.)t(.)6 b(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.) -g(.)g(.)h(.)f(.)g(.)g(.)g(.)18 b Ff(41)1012 334 y Fd(rl_startup_)o(ho)o -(ok)7 b Fe(.)s(.)f(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g -(.)h(.)f(.)g(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)21 -b Ff(23)1012 380 y Fd(rl_stuff_ch)o(ar)8 b Fe(.)s(.)e(.)h(.)f(.)g(.)g -(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.) -g(.)g(.)g(.)h(.)f(.)g(.)22 b Ff(32)1012 426 y Fd(rl_terminal)o(_n)o -(ame)6 b Fe(.)s(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g -(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)20 b Ff(23)1012 -472 y Fd(rl_tty_set_)o(de)o(fau)o(lt)o(_bi)o(nd)o(ing)o(s)8 -b Fe(.)s(.)e(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)21 -b Ff(32)1012 518 y Fd(rl_unbind_c)o(om)o(man)o(d_)o(in_)o(ma)o(p)7 -b Fe(.)f(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.) -f(.)23 b Ff(28)1012 564 y Fd(rl_unbind_f)o(un)o(cti)o(on)o(_in)o(_m)o -(ap)9 b Fe(.)s(.)d(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g -(.)g(.)23 b Ff(28)1012 610 y Fd(rl_unbind_k)o(ey)8 b -Fe(.)s(.)e(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g -(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)22 -b Ff(27)1012 656 y Fd(rl_unbind_k)o(ey)o(_in)o(_m)o(ap)s -Fe(.)t(.)6 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Fd(yank-nth-ar)o(g)10 b(\(M-C-y\))d -Fe(.)s(.)f(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f -(.)g(.)g(.)g(.)g(.)h(.)20 b Ff(13)1012 2251 y Fd(yank-pop)10 -b(\(M-y\))g Fe(.)c(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g -(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)25 -b Ff(15)p eop -%%Page: 58 60 -58 59 bop 75 -58 a Fu(58)1299 b(GNU)15 b(Readline)i(Library)p -eop -%%Page: -1 61 --1 60 bop 1862 -58 a Fu(i)75 149 y Fq(T)-7 b(able)27 -b(of)f(Con)n(ten)n(ts)75 320 y Fs(1)67 b(Command)22 b(Line)i(Editing)d -Fa(.)10 b(.)h(.)f(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)h -(.)f(.)g(.)g(.)42 b Fs(1)224 389 y Fu(1.1)j(In)o(tro)q(duction)16 -b(to)f(Line)h(Editing)e Fl(.)7 b(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.) -f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f -(.)27 b Fu(1)224 444 y(1.2)45 b(Readline)17 b(In)o(teraction)8 -b Fl(.)g(.)g(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) 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b(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.) -h(.)f(.)h(.)f(.)h(.)f(.)h(.)28 b Fu(12)374 1101 y(1.4.2)44 -b(Commands)14 b(F)l(or)h(Manipulating)i(The)e(History)9 -b Fl(.)e(.)h(.)f(.)h(.)f(.)h(.)24 b Fu(12)374 1156 y(1.4.3)44 -b(Commands)14 b(F)l(or)h(Changing)h(T)l(ext)e Fl(.)8 -b(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)30 -b Fu(13)374 1211 y(1.4.4)44 b(Killing)18 b(And)e(Y)l(anking)9 -b Fl(.)e(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)24 b Fu(14)374 -1266 y(1.4.5)44 b(Sp)q(ecifying)17 b(Numeric)f(Argumen)o(ts)c -Fl(.)c(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)27 -b Fu(15)374 1320 y(1.4.6)44 b(Letting)15 b(Readline)j(T)o(yp)q(e)d(F)l -(or)g(Y)l(ou)10 b Fl(.)d(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -h(.)f(.)h(.)f(.)25 b Fu(16)374 1375 y(1.4.7)44 b(Keyb)q(oard)15 -b(Macros)6 b Fl(.)h(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)21 -b Fu(16)374 1430 y(1.4.8)44 b(Some)15 b(Miscellaneous)i(Commands)7 -b Fl(.)g(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -22 b Fu(17)224 1485 y(1.5)45 b(Readline)17 b(vi)f(Mo)q(de)e -Fl(.)7 b(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.) -f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)h(.)28 b Fu(18)75 1606 y Fs(2)67 b(Programming)23 -b(with)g(GNU)f(Readline)12 b Fa(.)f(.)g(.)f(.)g(.)g(.)g(.)h(.)f(.)35 -b Fs(19)224 1675 y Fu(2.1)45 b(Basic)16 b(Beha)o(vior)8 -b Fl(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.) -f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)h(.)f(.)h(.)f(.)23 b Fu(19)224 1729 y(2.2)45 -b(Custom)14 b(F)l(unctions)7 b Fl(.)i(.)f(.)f(.)h(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.) -f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)22 b Fu(20)374 -1784 y(2.2.1)44 b(Readline)17 b(T)o(yp)q(edefs)9 b Fl(.)g(.)e(.)h(.)f -(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.) -f(.)h(.)f(.)h(.)g(.)f(.)h(.)24 b Fu(20)374 1839 y(2.2.2)44 -b(W)l(riting)16 b(a)e(New)i(F)l(unction)6 b Fl(.)i(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -21 b Fu(21)224 1894 y(2.3)45 b(Readline)17 b(V)l(ariables)f -Fl(.)8 b(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g -(.)f(.)h(.)29 b Fu(22)224 1949 y(2.4)45 b(Readline)17 -b(Con)o(v)o(enience)g(F)l(unctions)7 b Fl(.)i(.)e(.)h(.)f(.)h(.)f(.)h -(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -23 b Fu(26)374 2003 y(2.4.1)44 b(Naming)15 b(a)g(F)l(unction)e -Fl(.)7 b(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)27 b Fu(26)374 -2058 y(2.4.2)44 b(Selecting)17 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-f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)22 -b Fu(31)374 2387 y(2.4.8)44 b(Character)14 b(Input)c -Fl(.)f(.)e(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h -(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)25 -b Fu(32)374 2442 y(2.4.9)44 b(T)l(erminal)16 b(Managemen)o(t)11 -b Fl(.)c(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.) -h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)27 b Fu(32)374 2496 y(2.4.10)43 -b(Utilit)o(y)17 b(F)l(unctions)c Fl(.)7 b(.)h(.)g(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.) -f(.)h(.)f(.)28 b Fu(33)374 2551 y(2.4.11)43 b(Alternate)16 -b(In)o(terface)f Fl(.)7 b(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h -(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)30 -b Fu(34)374 2606 y(2.4.12)43 b(An)16 b(Example)f Fl(.)8 -b(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)30 -b Fu(34)224 2661 y(2.5)45 b(Readline)17 b(Signal)g(Handling)12 -b Fl(.)c(.)g(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)27 -b Fu(35)p eop -%%Page: -2 62 --2 61 bop 75 -58 a Fu(ii)1321 b(GNU)15 b(Readline)i(Library)224 -42 y(2.6)45 b(Custom)14 b(Completers)f Fl(.)8 b(.)f(.)h(.)f(.)h(.)f(.)h -(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.) -f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)28 b Fu(37)374 -96 y(2.6.1)44 b(Ho)o(w)14 b(Completing)i(W)l(orks)10 -b Fl(.)d(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.) -f(.)h(.)f(.)h(.)f(.)h(.)f(.)25 b Fu(37)374 151 y(2.6.2)44 -b(Completion)16 b(F)l(unctions)6 b Fl(.)i(.)g(.)f(.)h(.)f(.)h(.)f(.)h -(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.) -21 b Fu(38)374 206 y(2.6.3)44 b(Completion)16 b(V)l(ariables)c -Fl(.)c(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)27 b Fu(39)374 261 -y(2.6.4)44 b(A)15 b(Short)g(Completion)h(Example)5 b -Fl(.)j(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h -(.)f(.)20 b Fu(42)75 382 y Fs(Concept)i(Index)10 b Fa(.)i(.)e(.)g(.)g -(.)g(.)h(.)f(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)h(.)f(.) -g(.)g(.)g(.)h(.)f(.)g(.)g(.)h(.)f(.)33 b Fs(53)75 517 -y(F)-6 b(unction)25 b(and)d(V)-6 b(ariable)24 b(Index)9 -b Fa(.)i(.)f(.)g(.)h(.)f(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.) -g(.)32 b Fs(55)p eop -%%Trailer -end -userdict /end-hook known{end-hook}if -%%EOF diff --git a/readline/doc/readline_3.ps b/readline/doc/readline_3.ps deleted file mode 100644 --- a/readline/doc/readline_3.ps +++ /dev/null @@ -1,1227 +0,0 @@ -%!PS-Adobe-3.0 -%%Creator: groff version 1.15 -%%CreationDate: Mon Feb 5 11:30:24 2001 -%%DocumentNeededResources: font Times-Roman -%%+ font Times-Bold -%%+ font Times-Italic -%%+ font Courier -%%DocumentSuppliedResources: procset grops 1.15 0 -%%Pages: 13 -%%PageOrder: Ascend -%%Orientation: 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-/z/braceleft/bar/braceright/tilde/.notdef/quotesinglbase/guillemotleft -/guillemotright/bullet/florin/fraction/perthousand/dagger/daggerdbl -/endash/emdash/ff/fi/fl/ffi/ffl/dotlessi/dotlessj/grave/hungarumlaut -/dotaccent/breve/caron/ring/ogonek/quotedblleft/quotedblright/oe/lslash -/quotedblbase/OE/Lslash/.notdef/exclamdown/cent/sterling/currency/yen -/brokenbar/section/dieresis/copyright/ordfeminine/guilsinglleft -/logicalnot/minus/registered/macron/degree/plusminus/twosuperior -/threesuperior/acute/mu/paragraph/periodcentered/cedilla/onesuperior -/ordmasculine/guilsinglright/onequarter/onehalf/threequarters -/questiondown/Agrave/Aacute/Acircumflex/Atilde/Adieresis/Aring/AE -/Ccedilla/Egrave/Eacute/Ecircumflex/Edieresis/Igrave/Iacute/Icircumflex -/Idieresis/Eth/Ntilde/Ograve/Oacute/Ocircumflex/Otilde/Odieresis -/multiply/Oslash/Ugrave/Uacute/Ucircumflex/Udieresis/Yacute/Thorn -/germandbls/agrave/aacute/acircumflex/atilde/adieresis/aring/ae/ccedilla -/egrave/eacute/ecircumflex/edieresis/igrave/iacute/icircumflex/idieresis -/eth/ntilde/ograve/oacute/ocircumflex/otilde/odieresis/divide/oslash -/ugrave/uacute/ucircumflex/udieresis/yacute/thorn/ydieresis]def -/Courier@0 ENC0/Courier RE/Times-Italic@0 ENC0/Times-Italic RE -/Times-Bold@0 ENC0/Times-Bold RE/Times-Roman@0 ENC0/Times-Roman RE -%%EndProlog -%%Page: 1 1 -%%BeginPageSetup -BP -%%EndPageSetup -/F0 10/Times-Roman@0 SF 342.2(READLINE\(3\) READLINE\(3\))72 48 R/F1 9 -/Times-Bold@0 SF -.18(NA)72 84 S(ME).18 E F0 -(readline \255 get a line from a user with editing)108 96 Q F1(SYNOPSIS) -72 112.8 Q/F2 10/Times-Bold@0 SF(#include )108 124.8 Q -(#include )-.18 E(#include )-.7 E/F3 10/Times-Italic@0 SF --.15(ch)108 165.6 S(ar *).15 E F2 -.18(re)108 177.6 S(adline).18 E F0 -(\()2.5 E F3(const c)A(har *pr)-.15 E(ompt)-.45 E F0(\);)A F1(COPYRIGHT) -72 194.4 Q F0(Readline is Cop)108 206.4 Q -(yright \251 1989\2552001 by the Free Softw)-.1 E(are F)-.1 E -(oundation, Inc.)-.15 E F1(DESCRIPTION)72 223.2 Q F2 -.18(re)108 235.2 S -(adline).18 E F0 .088 -(will read a line from the terminal and return it, using)2.588 F F2(pr) -2.587 E(ompt)-.18 E F0 .087(as a prompt.)2.587 F(If)5.087 E F2(pr)2.587 -E(ompt)-.18 E F0(is)2.587 E F2(NULL)2.587 E F0(or)2.587 E .42 -(the empty string, no prompt is issued.)108 247.2 R .421 -(The line returned is allocated with)5.42 F F3(malloc)2.921 E F0 .421 -(\(3\); the caller must free it).31 F(when \214nished.)108 259.2 Q -(The line returned has the \214nal ne)5 E(wline remo)-.25 E -.15(ve)-.15 -G(d, so only the te).15 E(xt of the line remains.)-.15 E F2 -.18(re)108 -276 S(adline).18 E F0(of)3.79 E 1.29 -(fers editing capabilities while the user is entering the line.)-.25 F -1.289(By def)6.289 F 1.289(ault, the line editing com-)-.1 F -(mands are similar to those of emacs.)108 288 Q 2.5(Av)5 G -(i\255style line editing interf)-2.5 E(ace is also a)-.1 E -.25(va)-.2 G -(ilable.).25 E .272 -(This manual page describes only the most basic use of)108 304.8 R F2 --.18(re)2.772 G(adline).18 E F0 5.272(.M)C .272 -(uch more functionality is a)-5.272 F -.25(va)-.2 G .272(ilable; see).25 -F F3(The GNU Readline Libr)108 316.8 Q(ary)-.15 E F0(and)2.5 E F3 -(The GNU History Libr)2.5 E(ary)-.15 E F0(for additional information.) -2.5 E F1(RETURN V)72 333.6 Q(ALUE)-1.215 E F2 -.18(re)108 345.6 S -(adline).18 E F0 1.09(returns the te)3.59 F 1.09(xt of the line read.) --.15 F 3.589(Ab)6.09 G 1.089(lank line returns the empty string.)-3.589 -F(If)6.089 E F2(EOF)3.589 E F0 1.089(is encountered)3.589 F .283 -(while reading a line, and the line is empty)108 357.6 R(,)-.65 E F2 -(NULL)2.783 E F0 .283(is returned.)2.783 F .283(If an)5.283 F F2(EOF) -2.783 E F0 .283(is read with a non\255empty line, it)2.783 F -(is treated as a ne)108 369.6 Q(wline.)-.25 E F1(NO)72 386.4 Q -.81(TA) --.36 G(TION)-.045 E F0 .181(An emacs-style notation is used to denote k) -108 398.4 R -.15(ey)-.1 G(strok).15 E 2.681(es. Control)-.1 F -.1(ke) -2.681 G .18(ys are denoted by C\255)-.05 F F3 -.1(ke)C(y)-.2 E F0 2.68 -(,e)C .18(.g., C\255n means)-2.68 F 2.625(Control\255N. Similarly)108 -410.4 R(,)-.65 E F3(meta)2.625 E F0 -.1(ke)2.625 G .125 -(ys are denoted by M\255)-.05 F F3 -.1(ke)C(y)-.2 E F0 2.625(,s)C 2.625 -(oM)-2.625 G .125(\255x means Meta\255X.)-2.625 F .126(\(On k)5.126 F --.15(ey)-.1 G .126(boards without a).15 F F3(meta)108 422.4 Q F0 -.1(ke) -3.309 G 2.109 -.65(y, M)-.05 H.65 E F3(x)A F0 .809(means ESC)3.309 F -F3(x)3.309 E F0 3.309(,i)C .809(.e., press the Escape k)-3.309 F 1.108 --.15(ey t)-.1 H .808(hen the).15 F F3(x)3.308 E F0 -.1(ke)3.308 G 4.608 --.65(y. T)-.05 H .808(his mak).65 F .808(es ESC the)-.1 F F3 .808 -(meta pr)3.308 F(e\214x)-.37 E F0(.)A .48(The combination M\255C\255)108 -434.4 R F3(x)A F0 .48(means ESC\255Control\255)2.98 F F3(x)A F0 2.98(,o) -C 2.98(rp)-2.98 G .48(ress the Escape k)-2.98 F .78 -.15(ey t)-.1 H .48 -(hen hold the Control k).15 F .78 -.15(ey w)-.1 H(hile).15 E -(pressing the)108 446.4 Q F3(x)2.5 E F0 -.1(ke)2.5 G -.65(y.)-.05 G(\)) -.65 E .62(Readline commands may be gi)108 463.2 R -.15(ve)-.25 G 3.119 -(nn).15 G(umeric)-3.119 E F3(ar)3.119 E(guments)-.37 E F0 3.119(,w).27 G -.619(hich normally act as a repeat count.)-3.119 F(Sometimes,)5.619 E -(ho)108 475.2 Q(we)-.25 E -.15(ve)-.25 G 1.418 -.4(r, i).15 H 3.118(ti) -.4 G 3.119(st)-3.118 G .619(he sign of the ar)-3.119 F .619 -(gument that is signi\214cant.)-.18 F -.15(Pa)5.619 G .619(ssing a ne) -.15 F -.05(ga)-.15 G(ti).05 E .919 -.15(ve a)-.25 H -.18(rg).15 G .619 -(ument to a command that).18 F 1.019(acts in the forw)108 487.2 R 1.018 -(ard direction \(e.g.,)-.1 F F2(kill\255line)3.518 E F0 3.518(\)c)C -1.018(auses that command to act in a backw)-3.518 F 1.018 -(ard direction.)-.1 F(Com-)6.018 E(mands whose beha)108 499.2 Q -(vior with ar)-.2 E(guments de)-.18 E(viates from this are noted.)-.25 E -.811(When a command is described as)108 516 R F3(killing)3.311 E F0(te) -3.311 E .811(xt, the te)-.15 F .811(xt deleted is sa)-.15 F -.15(ve)-.2 -G 3.311(df).15 G .812(or possible future retrie)-3.311 F -.25(va)-.25 G -3.312(l\().25 G F3(yank-)-3.312 E(ing)108 528 Q F0 2.529(\). The)B .029 -(killed te)2.529 F .029(xt is sa)-.15 F -.15(ve)-.2 G 2.529(di).15 G -2.529(na)-2.529 G F3 .029(kill ring)B F0 5.029(.C)C(onsecuti)-5.029 E -.329 -.15(ve k)-.25 H .029(ills cause the te).15 F .029 -(xt to be accumulated into one unit,)-.15 F .567(which can be yank)108 -540 R .567(ed all at once.)-.1 F .567(Commands which do not kill te) -5.567 F .567(xt separate the chunks of te)-.15 F .567(xt on the kill) --.15 F(ring.)108 552 Q F1(INITIALIZA)72 568.8 Q(TION FILE)-.855 E F0 -.091(Readline is customized by putting commands in an initialization \ -\214le \(the)108 580.8 R F3(inputr)2.591 E(c)-.37 E F0 2.591 -(\214le\). The)2.591 F .091(name of this \214le)2.591 F 1.442(is tak)108 -592.8 R 1.443(en from the v)-.1 F 1.443(alue of the)-.25 F F2(INPUTRC) -3.943 E F0(en)3.943 E 1.443(vironment v)-.4 F 3.943(ariable. If)-.25 F -1.443(that v)3.943 F 1.443(ariable is unset, the def)-.25 F 1.443 -(ault is)-.1 F F3(~/.inputr)108 604.8 Q(c)-.37 E F0 5.359(.W).31 G .359 -(hen a program which uses the readline library starts up, the init \214\ -le is read, and the k)-5.359 F .658 -.15(ey b)-.1 H(ind-).15 E 1.083 -(ings and v)108 616.8 R 1.083(ariables are set.)-.25 F 1.083 -(There are only a fe)6.083 F 3.583(wb)-.25 G 1.083(asic constructs allo) --3.583 F 1.084(wed in the readline init \214le.)-.25 F(Blank)6.084 E -.737(lines are ignored.)108 628.8 R .737(Lines be)5.737 F .737 -(ginning with a)-.15 F F2(#)3.237 E F0 .737(are comments.)3.237 F .737 -(Lines be)5.737 F .737(ginning with a)-.15 F F2($)3.237 E F0 .736 -(indicate conditional)3.236 F 2.614(constructs. Other)108 640.8 R .114 -(lines denote k)2.614 F .414 -.15(ey b)-.1 H .115(indings and v).15 F -.115(ariable settings.)-.25 F .115 -(Each program using this library may add)5.115 F(its o)108 652.8 Q -(wn commands and bindings.)-.25 E -.15(Fo)108 669.6 S 2.5(re).15 G -(xample, placing)-2.65 E(M\255Control\255u: uni)144 686.4 Q -.15(ve)-.25 -G(rsal\255ar).15 E(gument)-.18 E(or)108 698.4 Q(C\255Meta\255u: uni)144 -710.4 Q -.15(ve)-.25 G(rsal\255ar).15 E(gument)-.18 E(GNU Readline 4.2) -72 768 Q(2001 Feb 5)136.79 E(1)206.5 E EP -%%Page: 2 2 -%%BeginPageSetup -BP -%%EndPageSetup -/F0 10/Times-Roman@0 SF 342.2(READLINE\(3\) READLINE\(3\))72 48 R -(into the)108 84 Q/F1 10/Times-Italic@0 SF(inputr)2.5 E(c)-.37 E F0 -.1 -(wo)2.5 G(uld mak).1 E 2.5(eM)-.1 G(\255C\255u e)-2.5 E -.15(xe)-.15 G -(cute the readline command).15 E F1(univer)2.5 E(sal\255ar)-.1 E(gument) --.37 E F0(.).68 E 2.795(The follo)108 100.8 R 2.795 -(wing symbolic character names are recognized while processing k)-.25 F -3.095 -.15(ey b)-.1 H(indings:).15 E F1(DEL)5.295 E F0(,).53 E F1(ESC) -5.295 E F0(,).72 E F1(ESCAPE)108 112.8 Q F0(,).73 E F1(LFD)2.5 E F0(,) -.28 E F1(NEWLINE)2.5 E F0(,).73 E F1(RET)2.5 E F0(,)1.27 E F1(RETURN)2.5 -E F0(,)1.1 E F1 -.4(RU)2.5 G(BOUT).4 E F0(,)1.27 E F1(SP)2.5 E -.3(AC) --.9 G(E).3 E F0(,).73 E F1(SPC)2.5 E F0 2.5(,a).72 G(nd)-2.5 E F1 -.5 -(TA)2.5 G(B).5 E F0(.).27 E .209 -(In addition to command names, readline allo)108 129.6 R .209(ws k)-.25 -F -.15(ey)-.1 G 2.709(st).15 G 2.709(ob)-2.709 G 2.709(eb)-2.709 G .209 -(ound to a string that is inserted when the k)-2.709 F .509 -.15(ey i) --.1 H(s).15 E(pressed \(a)108 141.6 Q F1(macr)2.5 E(o)-.45 E F0(\).)A/F2 -10/Times-Bold@0 SF -.25(Ke)87 163.2 S 2.5(yB).25 G(indings)-2.5 E F0 -.382(The syntax for controlling k)108 175.2 R .682 -.15(ey b)-.1 H .382 -(indings in the).15 F F1(inputr)2.882 E(c)-.37 E F0 .382 -(\214le is simple.)2.882 F .382(All that is required is the name of the) -5.382 F .382(command or the te)108 187.2 R .383(xt of a macro and a k) --.15 F .683 -.15(ey s)-.1 H .383 -(equence to which it should be bound. The name may be speci-).15 F .853 -(\214ed in one of tw)108 199.2 R 3.353(ow)-.1 G .853 -(ays: as a symbolic k)-3.453 F 1.153 -.15(ey n)-.1 H .853 -(ame, possibly with).15 F F1(Meta\255)3.353 E F0(or)3.353 E F1(Contr) -3.353 E(ol\255)-.45 E F0(pre\214x)3.353 E .853(es, or as a k)-.15 F -.15 -(ey)-.1 G 3.145(sequence. When)108 211.2 R .645(using the form)3.145 F -F2 -.1(ke)3.145 G(yname).1 E F0(:)A F1(function-name).833 E F0(or)3.145 -E F1(macr)3.145 E(o)-.45 E F0(,)A F1 -.1(ke)3.145 G(yname)-.2 E F0 .645 -(is the name of a k)3.145 F .946 -.15(ey s)-.1 H(pelled).15 E -(out in English.)108 223.2 Q -.15(Fo)5 G 2.5(re).15 G(xample:)-2.65 E -(Control\255u: uni)144 247.2 Q -.15(ve)-.25 G(rsal\255ar).15 E(gument) --.18 E(Meta\255Rubout: backw)144 259.2 Q(ard\255kill\255w)-.1 E(ord)-.1 -E(Control\255o: "> output")144 271.2 Q .229(In the abo)108 288 R .529 --.15(ve ex)-.15 H(ample,).15 E F1(C\255u)2.729 E F0 .229 -(is bound to the function)2.729 F F2(uni)2.729 E -.1(ve)-.1 G -(rsal\255ar).1 E(gument)-.1 E F0(,)A F1(M-DEL)2.729 E F0 .228 -(is bound to the function)2.729 F F2(backward\255kill\255w)108 300 Q -(ord)-.1 E F0 3.837(,a)C(nd)-3.837 E F1(C\255o)3.837 E F0 1.337 -(is bound to run the macro e)3.837 F 1.337 -(xpressed on the right hand side \(that is, to)-.15 F(insert the te)108 -312 Q(xt)-.15 E/F3 10/Courier@0 SF 6(>o)2.5 G(utput)-6 E F0 -(into the line\).)2.5 E .056(In the second form,)108 328.8 R F2("k)2.556 -E(eyseq")-.1 E F0(:)A F1(function\255name).833 E F0(or)2.556 E F1(macr) -2.556 E(o)-.45 E F0(,)A F2 -.1(ke)2.556 G(yseq).1 E F0(dif)2.555 E .055 -(fers from)-.25 F F2 -.1(ke)2.555 G(yname).1 E F0(abo)2.555 E .355 -.15 -(ve i)-.15 H 2.555(nt).15 G .055(hat strings)-2.555 F 1.284 -(denoting an entire k)108 340.8 R 1.584 -.15(ey s)-.1 H 1.284(equence m\ -ay be speci\214ed by placing the sequence within double quotes.).15 F -(Some)6.284 E(GNU Emacs style k)108 352.8 Q .3 -.15(ey e)-.1 H -(scapes can be used, as in the follo).15 E(wing e)-.25 E(xample.)-.15 E -("\\C\255u": uni)144 376.8 Q -.15(ve)-.25 G(rsal\255ar).15 E(gument)-.18 -E("\\C\255x\\C\255r": re\255read\255init\255\214le)144 388.8 Q -("\\e[11~": "Function K)144 400.8 Q .3 -.15(ey 1)-.25 H(").15 E .238 -(In this e)108 417.6 R(xample,)-.15 E F1(C-u)2.738 E F0 .238(is ag)2.738 -F .238(ain bound to the function)-.05 F F2(uni)2.738 E -.1(ve)-.1 G -(rsal\255ar).1 E(gument)-.1 E F0(.)A F1 .237(C-x C-r)5.238 F F0 .237 -(is bound to the function)2.737 F F2 -.18(re)108 429.6 S.18 E -(ead\255init\255\214le)-.18 E F0 3.224(,a)C(nd)-3.224 E F1 .724 -(ESC [ 1 1 ~)3.224 F F0 .724(is bound to insert the te)3.224 F(xt)-.15 E -F3 .725(Function Key 1)3.225 F F0 5.725(.T)C .725(he full set of GNU) --5.725 F(Emacs style escape sequences is)108 441.6 Q F2<5c43ad>144 453.6 -Q F0(control pre\214x)20.3 E F2<5c4dad>144 465.6 Q F0(meta pre\214x) -18.08 E F2(\\e)144 477.6 Q F0(an escape character)28.78 E F2(\\\\)144 -489.6 Q F0(backslash)30.44 E F2(\\")144 501.6 Q F0 -(literal ", a double quote)27.67 E F2(\\')144 513.6 Q F0 -(literal ', a single quote)29.89 E(In addition to the GNU Emacs style e\ -scape sequences, a second set of backslash escapes is a)108 530.4 Q -.25 -(va)-.2 G(ilable:).25 E F2(\\a)144 542.4 Q F0(alert \(bell\))28.22 E F2 -(\\b)144 554.4 Q F0(backspace)27.66 E F2(\\d)144 566.4 Q F0(delete)27.66 -E F2(\\f)144 578.4 Q F0(form feed)29.89 E F2(\\n)144 590.4 Q F0(ne)27.66 -E(wline)-.25 E F2(\\r)144 602.4 Q F0(carriage return)28.78 E F2(\\t)144 -614.4 Q F0(horizontal tab)29.89 E F2(\\v)144 626.4 Q F0 -.15(ve)28.22 G -(rtical tab).15 E F2(\\)144 638.4 Q F1(nnn)A F0 -(the character whose ASCII code is the octal v)18.22 E(alue)-.25 E F1 -(nnn)2.5 E F0(\(one to three digits\))2.5 E F2(\\x)144 650.4 Q F1(nnn)A -F0(the character whose ASCII code is the he)13.22 E(xadecimal v)-.15 E -(alue)-.25 E F1(nnn)2.5 E F0(\(one to three digits\))2.5 E .74 -(When entering the te)108 667.2 R .74(xt of a macro, single or double q\ -uotes should be used to indicate a macro de\214nition.)-.15 F .089 -(Unquoted te)108 679.2 R .089(xt is assumed to be a function name.)-.15 -F .09(In the macro body)5.089 F 2.59(,t)-.65 G .09 -(he backslash escapes described abo)-2.59 F -.15(ve)-.15 G(are e)108 -691.2 Q 2.5(xpanded. Backslash)-.15 F(will quote an)2.5 E 2.5(yo)-.15 G -(ther character in the macro te)-2.5 E(xt, including " and '.)-.15 E F2 -(Bash)108 708 Q F0(allo)2.93 E .43(ws the current readline k)-.25 F .73 --.15(ey b)-.1 H .429(indings to be displayed or modi\214ed with the).15 -F F2(bind)2.929 E F0 -.2(bu)2.929 G .429(iltin command.).2 F 2.515 -(The editing mode may be switched during interacti)108 720 R 2.815 -.15 -(ve u)-.25 H 2.515(se by using the).15 F F25.015 E F0 2.516 -(option to the)5.016 F F2(set)5.016 E F0 -.2(bu)5.016 G(iltin).2 E -(GNU Readline 4.2)72 768 Q(2001 Feb 5)136.79 E(2)206.5 E EP -%%Page: 3 3 -%%BeginPageSetup -BP -%%EndPageSetup -/F0 10/Times-Roman@0 SF 342.2(READLINE\(3\) READLINE\(3\))72 48 R 3.12 -(command. Other)108 84 R .62(programs using this library pro)3.12 F .619 -(vide similar mechanisms.)-.15 F(The)5.619 E/F1 10/Times-Italic@0 SF -(inputr)3.119 E(c)-.37 E F0 .619(\214le may be edited)3.119 F -(and re-read if a program does not pro)108 96 Q(vide an)-.15 E 2.5(yo) --.15 G(ther means to incorporate ne)-2.5 E 2.5(wb)-.25 G(indings.)-2.5 E -/F2 10/Times-Bold@0 SF -.92(Va)87 112.8 S(riables).92 E F0 .043 -(Readline has v)108 124.8 R .044 -(ariables that can be used to further customize its beha)-.25 F(vior)-.2 -E 5.044(.A)-.55 G -.25(va)-2.5 G .044(riable may be set in the).25 F F1 -(inpu-)2.544 E(tr)108 136.8 Q(c)-.37 E F0 -(\214le with a statement of the form)2.5 E F2(set)144 153.6 Q F1 -(variable\255name value)2.5 E F0 .807(Except where noted, readline v)108 -170.4 R .807(ariables can tak)-.25 F 3.307(et)-.1 G .807(he v)-3.307 F -(alues)-.25 E F2(On)3.307 E F0(or)3.307 E F2(Off)3.307 E F0 .807 -(\(without re)3.307 F -.05(ga)-.15 G .807(rd to case\).).05 F .807 -(The v)5.807 F(ari-)-.25 E(ables and their def)108 182.4 Q(ault v)-.1 E -(alues are:)-.25 E F2(bell\255style \(audible\))108 199.2 Q F0 .01 -(Controls what happens when readline w)144 211.2 R .011 -(ants to ring the terminal bell.)-.1 F .011(If set to)5.011 F F2(none) -2.511 E F0 2.511(,r)C .011(eadline ne)-2.511 F -.15(ve)-.25 G(r).15 E -.94(rings the bell.)144 223.2 R .94(If set to)5.94 F F2(visible)3.44 E -F0 3.44(,r)C .94(eadline uses a visible bell if one is a)-3.44 F -.25 -(va)-.2 G 3.44(ilable. If).25 F .94(set to)3.44 F F2(audible)3.44 E F0 -(,)A(readline attempts to ring the terminal')144 235.2 Q 2.5(sb)-.55 G -(ell.)-2.5 E F2(comment\255begin \(`)108 247.2 Q(`#')-.63 E('\))-.63 E -F0 .062(The string that is inserted in)144 259.2 R F2(vi)2.562 E F0 .062 -(mode when the)2.562 F F2(insert\255comment)2.562 E F0 .062 -(command is e)2.562 F -.15(xe)-.15 G 2.562(cuted. This).15 F(com-)2.562 -E(mand is bound to)144 271.2 Q F2(M\255#)2.5 E F0(in emacs mode and to) -2.5 E F2(#)2.5 E F0(in vi command mode.)2.5 E F2(completion\255ignor)108 -283.2 Q(e\255case \(Off\))-.18 E F0(If set to)144 295.2 Q F2(On)2.5 E F0 -2.5(,r)C(eadline performs \214lename matching and completion in a case\ -\255insensiti)-2.5 E .3 -.15(ve f)-.25 H(ashion.).05 E F2 -(completion\255query\255items \(100\))108 307.2 Q F0 .53 -(This determines when the user is queried about vie)144 319.2 R .529 -(wing the number of possible completions gen-)-.25 F .56(erated by the) -144 331.2 R F2(possible\255completions)3.06 E F0 3.06(command. It)3.06 F -.561(may be set to an)3.061 F 3.061(yi)-.15 G(nte)-3.061 E .561(ger v) --.15 F .561(alue greater than or)-.25 F .783(equal to zero.)144 343.2 R -.783(If the number of possible completions is greater than or equal to \ -the v)5.783 F .782(alue of this)-.25 F -.25(va)144 355.2 S .237 -(riable, the user is ask).25 F .237(ed whether or not he wishes to vie) --.1 F 2.737(wt)-.25 G .237(hem; otherwise the)-2.737 F 2.737(ya)-.15 G -.237(re simply listed)-2.737 F(on the terminal.)144 367.2 Q F2(con)108 -379.2 Q -.1(ve)-.4 G(rt\255meta \(On\)).1 E F0 .613(If set to)144 391.2 -R F2(On)3.113 E F0 3.113(,r)C .613(eadline will con)-3.113 F -.15(ve)-.4 -G .613(rt characters with the eighth bit set to an ASCII k).15 F .912 --.15(ey s)-.1 H .612(equence by).15 F 1.315(stripping the eighth bit an\ -d pre\214xing it with an escape character \(in ef)144 403.2 R 1.316 -(fect, using escape as the)-.25 F F1(meta pr)144 415.2 Q(e\214x)-.37 E -F0(\).)A F2(disable\255completion \(Off\))108 427.2 Q F0 .038(If set to) -144 439.2 R F2(On)2.538 E F0 2.538(,r)C .038(eadline will inhibit w) --2.538 F .038(ord completion.)-.1 F .038 -(Completion characters will be inserted into the)5.038 F(line as if the) -144 451.2 Q 2.5(yh)-.15 G(ad been mapped to)-2.5 E F2(self-insert)2.5 E -F0(.)A F2(editing\255mode \(emacs\))108 463.2 Q F0 .215 -(Controls whether readline be)144 475.2 R .215(gins with a set of k)-.15 -F .515 -.15(ey b)-.1 H .216(indings similar to emacs or vi.).15 F F2 -(editing\255mode)5.216 E F0(can be set to either)144 487.2 Q F2(emacs) -2.5 E F0(or)2.5 E F2(vi)2.5 E F0(.)A F2(enable\255k)108 499.2 Q -(eypad \(Off\))-.1 E F0 .893(When set to)144 511.2 R F2(On)3.393 E F0 -3.393(,r)C .893(eadline will try to enable the application k)-3.393 F --.15(ey)-.1 G .893(pad when it is called.).15 F .892(Some sys-)5.893 F -(tems need this to enable the arro)144 523.2 Q 2.5(wk)-.25 G -.15(ey) --2.6 G(s.).15 E F2(expand\255tilde \(Off\))108 535.2 Q F0(If set to)144 -547.2 Q F2(on)2.5 E F0 2.5(,t)C(ilde e)-2.5 E -(xpansion is performed when readline attempts w)-.15 E(ord completion.) --.1 E F2(horizontal\255scr)108 559.2 Q(oll\255mode \(Off\))-.18 E F0 -.448(When set to)144 571.2 R F2(On)2.948 E F0 2.948(,m)C(ak)-2.948 E -.448(es readline use a single line for display)-.1 F 2.948(,s)-.65 G -.449(crolling the input horizontally on a)-2.948 F 1.194(single screen \ -line when it becomes longer than the screen width rather than wrapping \ -to a ne)144 583.2 R(w)-.25 E(line.)144 595.2 Q F2(input\255meta \(Off\)) -108 607.2 Q F0 .367(If set to)144 619.2 R F2(On)2.867 E F0 2.867(,r)C -.367(eadline will enable eight-bit input \(that is, it will not clear t\ -he eighth bit in the char)-2.867 F(-)-.2 E .957(acters it reads\), re) -144 631.2 R -.05(ga)-.15 G .956 -(rdless of what the terminal claims it can support.).05 F .956(The name) -5.956 F F2(meta\255\215ag)3.456 E F0 .956(is a)3.456 F(synon)144 643.2 Q -(ym for this v)-.15 E(ariable.)-.25 E F2(isear)108 655.2 Q -(ch\255terminators \(`)-.18 E(`C\255[ C\255J')-.63 E('\))-.63 E F0 .439 -(The string of characters that should terminate an incremental search w\ -ithout subsequently e)144 667.2 R -.15(xe)-.15 G(cut-).15 E .935 -(ing the character as a command.)144 679.2 R .935(If this v)5.935 F .935 -(ariable has not been gi)-.25 F -.15(ve)-.25 G 3.434(nav).15 G .934 -(alue, the characters)-3.684 F F1(ESC)3.434 E F0(and)144 691.2 Q F1 -(C\255J)2.5 E F0(will terminate an incremental search.)2.5 E F2 -.1(ke) -108 703.2 S(ymap \(emacs\)).1 E F0 2.323(Set the current readline k)144 -715.2 R -.15(ey)-.1 G 4.823(map. The).15 F 2.323(set of le)4.823 F -.05 -(ga)-.15 G 4.823(lk).05 G -.15(ey)-4.923 G 2.323(map names is).15 F F1 -2.324(emacs, emacs-standar)4.823 F(d,)-.37 E .809 -(emacs-meta, emacs-ctlx, vi, vi-mo)144 727.2 R(ve)-.1 E 3.308(,v)-.1 G -(i-command)-3.308 E F0 3.308(,a)C(nd)-3.308 E F1(vi-insert)3.308 E F0(.) -.68 E F1(vi)5.808 E F0 .808(is equi)3.308 F -.25(va)-.25 G .808(lent to) -.25 F F1(vi-command)3.308 E F0(;)A(GNU Readline 4.2)72 768 Q(2001 Feb 5) -136.79 E(3)206.5 E EP -%%Page: 4 4 -%%BeginPageSetup -BP -%%EndPageSetup -/F0 10/Times-Roman@0 SF 342.2(READLINE\(3\) READLINE\(3\))72 48 R/F1 10 -/Times-Italic@0 SF(emacs)144 84 Q F0 .697(is equi)3.196 F -.25(va)-.25 G -.697(lent to).25 F F1(emacs-standar)3.197 E(d)-.37 E F0 5.697(.T)C .697 -(he def)-5.697 F .697(ault v)-.1 F .697(alue is)-.25 F F1(emacs)3.197 E -F0 5.697(.T).27 G .697(he v)-5.697 F .697(alue of)-.25 F/F2 10 -/Times-Bold@0 SF(editing\255mode)3.197 E F0(also af)144 96 Q -(fects the def)-.25 E(ault k)-.1 E -.15(ey)-.1 G(map.).15 E F2 -(mark\255dir)108 108 Q(ectories \(On\))-.18 E F0(If set to)144 120 Q F2 -(On)2.5 E F0 2.5(,c)C(ompleted directory names ha)-2.5 E .3 -.15(ve a s) --.2 H(lash appended.).15 E F2(mark\255modi\214ed\255lines \(Off\))108 -132 Q F0(If set to)144 144 Q F2(On)2.5 E F0 2.5(,h)C -(istory lines that ha)-2.5 E .3 -.15(ve b)-.2 H -(een modi\214ed are displayed with a preceding asterisk \().15 E F2(*)A -F0(\).)A F2(output\255meta \(Off\))108 156 Q F0 .507(If set to)144 168 R -F2(On)3.007 E F0 3.007(,r)C .507(eadline will display characters with t\ -he eighth bit set directly rather than as a meta-)-3.007 F(pre\214x)144 -180 Q(ed escape sequence.)-.15 E F2 -(print\255completions\255horizontally \(Off\))108 192 Q F0 1.318 -(If set to)144 204 R F2(On)3.818 E F0 3.818(,r)C 1.319(eadline will dis\ -play completions with matches sorted horizontally in alphabetical)-3.818 -F(order)144 216 Q 2.5(,r)-.4 G(ather than do)-2.5 E(wn the screen.)-.25 -E F2(sho)108 228 Q(w\255all\255if\255ambiguous \(Off\))-.1 E F0 .478 -(This alters the def)144 240 R .478(ault beha)-.1 F .478 -(vior of the completion functions.)-.2 F .477(If set to)5.477 F F2(on) -2.977 E F0 2.977(,w)C .477(ords which ha)-3.077 F .777 -.15(ve m)-.2 H -(ore).15 E 1.264(than one possible completion cause the matches to be l\ -isted immediately instead of ringing the)144 252 R(bell.)144 264 Q F2 -(visible\255stats \(Off\))108 276 Q F0 .847(If set to)144 288 R F2(On) -3.346 E F0 3.346(,ac)C .846(haracter denoting a \214le')-3.346 F 3.346 -(st)-.55 G .846(ype as reported by)-3.346 F F1(stat)3.346 E F0 .846 -(\(2\) is appended to the \214lename)B -(when listing possible completions.)144 300 Q F2(Conditional Constructs) -87 316.8 Q F0 .05(Readline implements a f)108 328.8 R .05(acility simil\ -ar in spirit to the conditional compilation features of the C preproces\ -sor)-.1 F .097(which allo)108 340.8 R .097(ws k)-.25 F .396 -.15(ey b) --.1 H .096(indings and v).15 F .096 -(ariable settings to be performed as the result of tests.)-.25 F .096 -(There are four parser)5.096 F(directi)108 352.8 Q -.15(ve)-.25 G 2.5 -(su).15 G(sed.)-2.5 E F2($if)108 369.6 Q F0(The)24.89 E F2($if)2.962 E -F0 .462(construct allo)2.962 F .463(ws bindings to be made based on the\ - editing mode, the terminal being used,)-.25 F .478 -(or the application using readline.)144 381.6 R .477(The te)5.477 F .477 -(xt of the test e)-.15 F .477 -(xtends to the end of the line; no characters)-.15 F -(are required to isolate it.)144 393.6 Q F2(mode)144 410.4 Q F0(The) -12.67 E F2(mode=)3.711 E F0 1.211(form of the)3.711 F F2($if)3.711 E F0 -(directi)3.711 E 1.511 -.15(ve i)-.25 H 3.711(su).15 G 1.211 -(sed to test whether readline is in emacs or vi)-3.711 F 3.065 -(mode. This)180 422.4 R .565(may be used in conjunction with the)3.065 F -F2 .565(set k)3.065 F(eymap)-.1 E F0 .565(command, for instance, to) -3.065 F .029(set bindings in the)180 434.4 R F1(emacs-standar)2.529 E(d) --.37 E F0(and)2.529 E F1(emacs-ctlx)2.529 E F0 -.1(ke)2.529 G .029 -(ymaps only if readline is starting out)-.05 F(in emacs mode.)180 446.4 -Q F2(term)144 463.2 Q F0(The)15.46 E F2(term=)3.197 E F0 .696 -(form may be used to include terminal-speci\214c k)3.197 F .996 -.15 -(ey b)-.1 H .696(indings, perhaps to bind).15 F .654(the k)180 475.2 R -.954 -.15(ey s)-.1 H .654(equences output by the terminal').15 F 3.154 -(sf)-.55 G .654(unction k)-3.154 F -.15(ey)-.1 G 3.154(s. The).15 F -.1 -(wo)3.154 G .654(rd on the right side of).1 F(the)180 487.2 Q F2(=)3.004 -E F0 .504(is tested ag)3.004 F .503(ainst the full name of the terminal\ - and the portion of the terminal name)-.05 F(before the \214rst)180 -499.2 Q F22.5 E F0 5(.T)C(his allo)-5 E(ws)-.25 E F1(sun)2.5 E F0 -(to match both)2.5 E F1(sun)2.5 E F0(and)2.5 E F1(sun\255cmd)2.5 E F0 -2.5(,f).77 G(or instance.)-2.5 E F2(application)144 516 Q F0(The)180 528 -Q F2(application)3.003 E F0 .503 -(construct is used to include application-speci\214c settings.)3.003 F -.503(Each program)5.503 F .114(using the readline library sets the)180 -540 R F1 .114(application name)2.614 F F0 2.614(,a)C .114 -(nd an initialization \214le can test for a)-2.614 F .5(particular v)180 -552 R 3(alue. This)-.25 F .501(could be used to bind k)3 F .801 -.15 -(ey s)-.1 H .501(equences to functions useful for a spe-).15 F .397 -(ci\214c program.)180 564 R -.15(Fo)5.397 G 2.896(ri).15 G .396 -(nstance, the follo)-2.896 F .396(wing command adds a k)-.25 F .696 -.15 -(ey s)-.1 H .396(equence that quotes the).15 F(current or pre)180 576 Q -(vious w)-.25 E(ord in Bash:)-.1 E F2($if)180 600 Q F0(Bash)2.5 E 2.5 -(#Q)180 612 S(uote the current or pre)-2.5 E(vious w)-.25 E(ord)-.1 E -("\\C-xq": "\\eb\\"\\ef\\"")180 624 Q F2($endif)180 636 Q($endif)108 -652.8 Q F0(This command, as seen in the pre)9.33 E(vious e)-.25 E -(xample, terminates an)-.15 E F2($if)2.5 E F0(command.)2.5 E F2($else) -108 669.6 Q F0(Commands in this branch of the)15.45 E F2($if)2.5 E F0 -(directi)2.5 E .3 -.15(ve a)-.25 H(re e).15 E -.15(xe)-.15 G -(cuted if the test f).15 E(ails.)-.1 E F2($include)108 686.4 Q F0 .356 -(This directi)144 698.4 R .656 -.15(ve t)-.25 H(ak).15 E .356 -(es a single \214lename as an ar)-.1 F .357 -(gument and reads commands and bindings from that)-.18 F 2.5(\214le. F) -144 710.4 R(or e)-.15 E(xample, the follo)-.15 E(wing directi)-.25 E .3 --.15(ve w)-.25 H(ould read).05 E F1(/etc/inputr)2.5 E(c)-.37 E F0(:)A -(GNU Readline 4.2)72 768 Q(2001 Feb 5)136.79 E(4)206.5 E EP -%%Page: 5 5 -%%BeginPageSetup -BP -%%EndPageSetup -/F0 10/Times-Roman@0 SF 342.2(READLINE\(3\) READLINE\(3\))72 48 R/F1 10 -/Times-Bold@0 SF($include)144 84 Q/F2 10/Times-Italic@0 SF(/etc/inputr) -5.833 E(c)-.37 E/F3 9/Times-Bold@0 SF(SEARCHING)72 100.8 Q F0 1.004 -(Readline pro)108 112.8 R 1.003(vides commands for searching through th\ -e command history for lines containing a speci\214ed)-.15 F 2.5 -(string. There)108 124.8 R(are tw)2.5 E 2.5(os)-.1 G(earch modes:)-2.5 E -F2(incr)2.5 E(emental)-.37 E F0(and)2.5 E F2(non-incr)2.5 E(emental)-.37 -E F0(.).51 E .697(Incremental searches be)108 141.6 R .697 -(gin before the user has \214nished typing the search string.)-.15 F -.698(As each character of the)5.698 F .113 -(search string is typed, readline displays the ne)108 153.6 R .112 -(xt entry from the history matching the string typed so f)-.15 F(ar)-.1 -E 5.112(.A)-.55 G(n)-5.112 E .544 -(incremental search requires only as man)108 165.6 R 3.044(yc)-.15 G -.544(haracters as needed to \214nd the desired history entry)-3.044 F -5.545(.T)-.65 G 3.045(os)-6.345 G(earch)-3.045 E(backw)108 177.6 Q .181 -(ard in the history for a particular string, type)-.1 F F1(C\255r)2.681 -E F0 5.181(.T)C(yping)-5.981 E F1(C\255s)2.68 E F0 .18(searches forw) -2.68 F .18(ard through the history)-.1 F(.)-.65 E .354 -(The characters present in the v)108 189.6 R .354(alue of the)-.25 F F1 -(isear)2.854 E(ch-terminators)-.18 E F0 -.25(va)2.854 G .354 -(riable are used to terminate an incremen-).25 F .6(tal search.)108 -201.6 R .6(If that v)5.6 F .6(ariable has not been assigned a v)-.25 F -.6(alue the)-.25 F F2(Escape)3.1 E F0(and)3.1 E F1(C\255J)3.1 E F0 .6 -(characters will terminate an)3.1 F .122(incremental search.)108 213.6 R -F1(C\255G)5.122 E F0 .122 -(will abort an incremental search and restore the original line.)2.622 F -.123(When the search is)5.123 F(terminated, the history entry containin\ -g the search string becomes the current line.)108 225.6 Q 2.407 -.8 -(To \214)108 242.4 T .806 -(nd other matching entries in the history list, type).8 F F1(C\255s) -3.306 E F0(or)3.306 E F1(C\255r)3.306 E F0 .806(as appropriate.)3.306 F -.806(This will search back-)5.806 F -.1(wa)108 254.4 S 1.308(rd or forw) -.1 F 1.309(ard in the history for the ne)-.1 F 1.309 -(xt line matching the search string typed so f)-.15 F(ar)-.1 E 6.309(.A) --.55 G 1.609 -.15(ny o)-6.309 H 1.309(ther k).15 F -.15(ey)-.1 G .317 -(sequence bound to a readline command will terminate the search and e) -108 266.4 R -.15(xe)-.15 G .317(cute that command.).15 F -.15(Fo)5.317 G -2.817(ri).15 G(nstance,)-2.817 E 3.48(an)108 278.4 S -.25(ew)-3.48 G .98 -(line will terminate the search and accept the line, thereby e).25 F --.15(xe)-.15 G .981(cuting the command from the history).15 F 3.062 -(list. A)108 290.4 R(mo)3.062 E -.15(ve)-.15 G .562 -(ment command will terminate the search, mak).15 F 3.062(et)-.1 G .562 -(he last line found the current line, and be)-3.062 F(gin)-.15 E -(editing.)108 302.4 Q .567(Non-incremental searches read the entire sea\ -rch string before starting to search for matching history lines.)108 -319.2 R(The search string may be typed by the user or be part of the co\ -ntents of the current line.)108 331.2 Q F3(EDITING COMMANDS)72 348 Q F0 -1.392(The follo)108 360 R 1.391 -(wing is a list of the names of the commands and the def)-.25 F 1.391 -(ault k)-.1 F 1.691 -.15(ey s)-.1 H 1.391(equences to which the).15 F -3.891(ya)-.15 G(re)-3.891 E 2.5(bound. Command)108 372 R -(names without an accompan)2.5 E(ying k)-.15 E .3 -.15(ey s)-.1 H -(equence are unbound by def).15 E(ault.)-.1 E .054(In the follo)108 -388.8 R .054(wing descriptions,)-.25 F F2(point)2.554 E F0 .055 -(refers to the current cursor position, and)2.554 F F2(mark)2.555 E F0 -.055(refers to a cursor position)2.555 F(sa)108 400.8 Q -.15(ve)-.2 G -2.5(db).15 G 2.5(yt)-2.5 G(he)-2.5 E F1(set\255mark)2.5 E F0 2.5 -(command. The)2.5 F(te)2.5 E -(xt between the point and mark is referred to as the)-.15 E F2 -.37(re) -2.5 G(gion)-.03 E F0(.)A F1(Commands f)87 417.6 Q(or Mo)-.25 E(ving)-.1 -E(beginning\255of\255line \(C\255a\))108 429.6 Q F0(Mo)144 441.6 Q .3 --.15(ve t)-.15 H 2.5(ot).15 G(he start of the current line.)-2.5 E F1 -(end\255of\255line \(C\255e\))108 453.6 Q F0(Mo)144 465.6 Q .3 -.15 -(ve t)-.15 H 2.5(ot).15 G(he end of the line.)-2.5 E F1 -.25(fo)108 -477.6 S(rward\255char \(C\255f\)).25 E F0(Mo)144 489.6 Q .3 -.15(ve f) --.15 H(orw).15 E(ard a character)-.1 E(.)-.55 E F1 -(backward\255char \(C\255b\))108 501.6 Q F0(Mo)144 513.6 Q .3 -.15(ve b) --.15 H(ack a character).15 E(.)-.55 E F1 -.25(fo)108 525.6 S(rward\255w) -.25 E(ord \(M\255f\))-.1 E F0(Mo)144 537.6 Q .823 -.15(ve f)-.15 H(orw) -.15 E .523(ard to the end of the ne)-.1 F .523(xt w)-.15 F 3.023(ord. W) --.1 F .522(ords are composed of alphanumeric characters \(let-)-.8 F -(ters and digits\).)144 549.6 Q F1(backward\255w)108 561.6 Q -(ord \(M\255b\))-.1 E F0(Mo)144 573.6 Q 1.71 -.15(ve b)-.15 H 1.41 -(ack to the start of the current or pre).15 F 1.41(vious w)-.25 F 3.91 -(ord. W)-.1 F 1.41(ords are composed of alphanumeric)-.8 F -(characters \(letters and digits\).)144 585.6 Q F1(clear\255scr)108 -597.6 Q(een \(C\255l\))-.18 E F0 .993(Clear the screen lea)144 609.6 R -.993(ving the current line at the top of the screen.)-.2 F -.4(Wi)5.993 -G .993(th an ar).4 F .993(gument, refresh the)-.18 F -(current line without clearing the screen.)144 621.6 Q F1 -.18(re)108 -633.6 S(draw\255curr).18 E(ent\255line)-.18 E F0 -(Refresh the current line.)144 645.6 Q F1(Commands f)87 662.4 Q -(or Manipulating the History)-.25 E(accept\255line \(Newline, Retur)108 -674.4 Q(n\))-.15 E F0 .364(Accept the line re)144 686.4 R -.05(ga)-.15 G -.364(rdless of where the cursor is.).05 F .364 -(If this line is non-empty)5.364 F 2.864(,i)-.65 G 2.864(tm)-2.864 G -.365(ay be added to the)-2.864 F .741 -(history list for future recall with)144 698.4 R F1(add_history\(\)) -3.241 E F0 5.741(.I)C 3.241(ft)-5.741 G .74 -(he line is a modi\214ed history line, the history)-3.241 F -(line is restored to its original state.)144 710.4 Q(GNU Readline 4.2)72 -768 Q(2001 Feb 5)136.79 E(5)206.5 E EP -%%Page: 6 6 -%%BeginPageSetup -BP -%%EndPageSetup -/F0 10/Times-Roman@0 SF 342.2(READLINE\(3\) READLINE\(3\))72 48 R/F1 10 -/Times-Bold@0 SF(pr)108 84 Q -.15(ev)-.18 G(ious\255history \(C\255p\)) -.15 E F0(Fetch the pre)144 96 Q(vious command from the history list, mo) --.25 E(ving back in the list.)-.15 E F1(next\255history \(C\255n\))108 -108 Q F0(Fetch the ne)144 120 Q(xt command from the history list, mo) --.15 E(ving forw)-.15 E(ard in the list.)-.1 E F1 -(beginning\255of\255history \(M\255<\))108 132 Q F0(Mo)144 144 Q .3 -.15 -(ve t)-.15 H 2.5(ot).15 G(he \214rst line in the history)-2.5 E(.)-.65 E -F1(end\255of\255history \(M\255>\))108 156 Q F0(Mo)144 168 Q .3 -.15 -(ve t)-.15 H 2.5(ot).15 G(he end of the input history)-2.5 E 2.5(,i)-.65 -G(.e., the line currently being entered.)-2.5 E F1 -2.29 -.18(re v)108 -180 T(erse\255sear).08 E(ch\255history \(C\255r\))-.18 E F0 1.47 -(Search backw)144 192 R 1.471(ard starting at the current line and mo) --.1 F 1.471(ving `up' through the history as necessary)-.15 F(.)-.65 E -(This is an incremental search.)144 204 Q F1 -.25(fo)108 216 S -(rward\255sear).25 E(ch\255history \(C\255s\))-.18 E F0 1.132 -(Search forw)144 228 R 1.132(ard starting at the current line and mo)-.1 -F 1.131(ving `do)-.15 F 1.131(wn' through the history as necessary)-.25 -F(.)-.65 E(This is an incremental search.)144 240 Q F1(non\255incr)108 -252 Q(emental\255r)-.18 E -2.3 -.15(ev e)-.18 H(rse\255sear).15 E -(ch\255history \(M\255p\))-.18 E F0 .164(Search backw)144 264 R .164(ar\ -d through the history starting at the current line using a non-incremen\ -tal search for)-.1 F 2.5(as)144 276 S(tring supplied by the user)-2.5 E -(.)-.55 E F1(non\255incr)108 288 Q(emental\255f)-.18 E(orward\255sear) --.25 E(ch\255history \(M\255n\))-.18 E F0 1.354(Search forw)144 300 R -1.354(ard through the history using a non-incremental search for a stri\ -ng supplied by the)-.1 F(user)144 312 Q(.)-.55 E F1(history\255sear)108 -324 Q(ch\255f)-.18 E(orward)-.25 E F0 .248(Search forw)144 336 R .249(a\ -rd through the history for the string of characters between the start o\ -f the current line)-.1 F(and the current cursor position \(the)144 348 Q -/F2 10/Times-Italic@0 SF(point)2.5 E F0 2.5(\). This)B -(is a non-incremental search.)2.5 E F1(history\255sear)108 360 Q -(ch\255backward)-.18 E F0 .951(Search backw)144 372 R .951(ard through \ -the history for the string of characters between the start of the curre\ -nt)-.1 F(line and the point.)144 384 Q -(This is a non-incremental search.)5 E F1(yank\255nth\255ar)108 396 Q -2.5(g\()-.1 G<4dad43ad7929>-2.5 E F0 .622(Insert the \214rst ar)144 408 -R .622(gument to the pre)-.18 F .622 -(vious command \(usually the second w)-.25 F .622(ord on the pre)-.1 F -.622(vious line\))-.25 F .682(at point \(the current cursor position\).) -144 420 R -.4(Wi)5.682 G .682(th an ar).4 F(gument)-.18 E F2(n)3.182 E -F0 3.182(,i).24 G .682(nsert the)-3.182 F F2(n)3.182 E F0 .682(th w)B -.681(ord from the pre)-.1 F(vious)-.25 E .729(command \(the w)144 432 R -.729(ords in the pre)-.1 F .729(vious command be)-.25 F .729(gin with w) --.15 F .729(ord 0\).)-.1 F 3.23(An)5.73 G -2.25 -.15(eg a)-3.23 H(ti).15 -E 1.03 -.15(ve a)-.25 H -.18(rg).15 G .73(ument inserts).18 F(the)144 -444 Q F2(n)2.5 E F0(th w)A(ord from the end of the pre)-.1 E -(vious command.)-.25 E F1(yank\255last\255ar)108 456 Q 2.5(g\()-.1 G --1.667(M\255. ,)-2.5 F -1.667(M\255_ \))2.5 F F0 1.308 -(Insert the last ar)144 468 R 1.308(gument to the pre)-.18 F 1.307 -(vious command \(the last w)-.25 F 1.307(ord of the pre)-.1 F 1.307 -(vious history entry\).)-.25 F -.4(Wi)144 480 S .735(th an ar).4 F .735 -(gument, beha)-.18 F 1.035 -.15(ve ex)-.2 H .735(actly lik).15 F(e)-.1 E -F1(yank\255nth\255ar)3.235 E(g)-.1 E F0 5.736(.S)C(uccessi)-5.736 E -1.036 -.15(ve c)-.25 H .736(alls to).15 F F1(yank\255last\255ar)3.236 E -(g)-.1 E F0(mo)3.236 E -.15(ve)-.15 G -(back through the history list, inserting the last ar)144 492 Q -(gument of each line in turn.)-.18 E F1(Commands f)87 508.8 Q -(or Changing T)-.25 E(ext)-.92 E(delete\255char \(C\255d\))108 520.8 Q -F0 .487(Delete the character under the cursor)144 532.8 R 5.487(.I)-.55 -G 2.987(fp)-5.487 G .487(oint is at the be)-2.987 F .486 -(ginning of the line, there are no charac-)-.15 F -(ters in the line, and the last character typed w)144 544.8 Q -(as not bound to)-.1 E F1(delete\255char)2.5 E F0 2.5(,t)C(hen return) --2.5 E/F3 9/Times-Bold@0 SF(EOF)2.5 E/F4 9/Times-Roman@0 SF(.)A F1 -(backward\255delete\255char \(Rubout\))108 556.8 Q F0 .552 -(Delete the character behind the cursor)144 568.8 R 5.553(.W)-.55 G .553 -(hen gi)-5.553 F -.15(ve)-.25 G 3.053(nan).15 G .553(umeric ar)-3.053 F -.553(gument, sa)-.18 F .853 -.15(ve t)-.2 H .553(he deleted te).15 F -.553(xt on)-.15 F(the kill ring.)144 580.8 Q F1 -.25(fo)108 592.8 S -(rward\255backward\255delete\255char).25 E F0 .474 -(Delete the character under the cursor)144 604.8 R 2.974(,u)-.4 G .474 -(nless the cursor is at the end of the line, in which case the)-2.974 F -(character behind the cursor is deleted.)144 616.8 Q F1 -(quoted\255insert \(C\255q, C\255v\))108 628.8 Q F0 1.228(Add the ne)144 -640.8 R 1.228(xt character that you type to the line v)-.15 F 3.728 -(erbatim. This)-.15 F 1.228(is ho)3.728 F 3.729(wt)-.25 G 3.729(oi) --3.729 G 1.229(nsert characters lik)-3.729 F(e)-.1 E F1(C\255q)144 652.8 -Q F0 2.5(,f)C(or e)-2.5 E(xample.)-.15 E F1(tab\255insert \(M-T)108 -664.8 Q(AB\))-.9 E F0(Insert a tab character)144 676.8 Q(.)-.55 E F1 -(self\255insert \(a, b, A, 1, !, ...\))108 688.8 Q F0 -(Insert the character typed.)144 700.8 Q(GNU Readline 4.2)72 768 Q -(2001 Feb 5)136.79 E(6)206.5 E EP -%%Page: 7 7 -%%BeginPageSetup -BP -%%EndPageSetup -/F0 10/Times-Roman@0 SF 342.2(READLINE\(3\) READLINE\(3\))72 48 R/F1 10 -/Times-Bold@0 SF(transpose\255chars \(C\255t\))108 84 Q F0 .322 -(Drag the character before point forw)144 96 R .321(ard o)-.1 F -.15(ve) --.15 G 2.821(rt).15 G .321(he character at point, mo)-2.821 F .321 -(ving point forw)-.15 F .321(ard as well.)-.1 F 1.03 -(If point is at the end of the line, then transpose the tw)144 108 R -3.531(oc)-.1 G 1.031(haracters before point.)-3.531 F(Ne)6.031 E -.05 -(ga)-.15 G(ti).05 E 1.331 -.15(ve a)-.25 H -.18(rg).15 G(u-).18 E -(ments don')144 120 Q 2.5(tw)-.18 G(ork.)-2.6 E F1(transpose\255w)108 -132 Q(ords \(M\255t\))-.1 E F0 .566(Drag the w)144 144 R .566 -(ord behind the cursor past the w)-.1 F .565(ord in front of the cursor) --.1 F 3.065(,m)-.4 G -.15(ov)-3.065 G .565(ing the cursor o).15 F -.15 -(ve)-.15 G 3.065(rt).15 G(hat)-3.065 E -.1(wo)144 156 S(rd as well.).1 E -F1(upcase\255w)108 168 Q(ord \(M\255u\))-.1 E F0 1.698 -(Uppercase the current \(or follo)144 180 R 1.698(wing\) w)-.25 F 4.198 -(ord. W)-.1 F 1.698(ith a ne)-.4 F -.05(ga)-.15 G(ti).05 E 1.999 -.15 -(ve a)-.25 H -.18(rg).15 G 1.699(ument, uppercase the pre).18 F(vious) --.25 E -.1(wo)144 192 S(rd, b).1 E(ut do not mo)-.2 E .3 -.15(ve p)-.15 -H(oint.).15 E F1(do)108 204 Q(wncase\255w)-.1 E(ord \(M\255l\))-.1 E F0 -(Lo)144 216 Q 1.648(wercase the current \(or follo)-.25 F 1.648 -(wing\) w)-.25 F 4.148(ord. W)-.1 F 1.647(ith a ne)-.4 F -.05(ga)-.15 G -(ti).05 E 1.947 -.15(ve a)-.25 H -.18(rg).15 G 1.647(ument, lo).18 F -1.647(wercase the pre)-.25 F(vious)-.25 E -.1(wo)144 228 S(rd, b).1 E -(ut do not mo)-.2 E .3 -.15(ve p)-.15 H(oint.).15 E F1(capitalize\255w) -108 240 Q(ord \(M\255c\))-.1 E F0 1.974 -(Capitalize the current \(or follo)144 252 R 1.974(wing\) w)-.25 F 4.474 -(ord. W)-.1 F 1.974(ith a ne)-.4 F -.05(ga)-.15 G(ti).05 E 2.274 -.15 -(ve a)-.25 H -.18(rg).15 G 1.975(ument, capitalize the pre).18 F(vious) --.25 E -.1(wo)144 264 S(rd, b).1 E(ut do not mo)-.2 E .3 -.15(ve p)-.15 -H(oint.).15 E F1(Killing and Y)87 280.8 Q(anking)-.85 E -(kill\255line \(C\255k\))108 292.8 Q F0(Kill the te)144 304.8 Q -(xt from the current cursor position to the end of the line.)-.15 E F1 -(backward\255kill\255line \(C\255x Rubout\))108 316.8 Q F0(Kill backw) -144 328.8 Q(ard to the be)-.1 E(ginning of the line.)-.15 E F1 -(unix\255line\255discard \(C\255u\))108 340.8 Q F0(Kill backw)144 352.8 -Q(ard from point to the be)-.1 E(ginning of the line.)-.15 E -(The killed te)5 E(xt is sa)-.15 E -.15(ve)-.2 G 2.5(do).15 G 2.5(nt) --2.5 G(he kill-ring.)-2.5 E F1(kill\255whole\255line)108 364.8 Q F0(Kil\ -l all characters on the current line, no matter where the cursor is.)144 -376.8 Q F1(kill\255w)108 388.8 Q(ord \(M\255d\))-.1 E F0 1.044 -(Kill from the cursor to the end of the current w)144 400.8 R 1.043 -(ord, or if between w)-.1 F 1.043(ords, to the end of the ne)-.1 F(xt) --.15 E -.1(wo)144 412.8 S 2.5(rd. W).1 F -(ord boundaries are the same as those used by)-.8 E F1 -.25(fo)2.5 G -(rward\255w).25 E(ord)-.1 E F0(.)A F1(backward\255kill\255w)108 424.8 Q -(ord \(M\255Rubout\))-.1 E F0 3.26(Kill the w)144 436.8 R 3.26 -(ord behind the cursor)-.1 F 8.26(.W)-.55 G 3.26 -(ord boundaries are the same as those used by)-9.06 F F1(back-)5.76 E -(ward\255w)144 448.8 Q(ord)-.1 E F0(.)A F1(unix\255w)108 460.8 Q -(ord\255rubout \(C\255w\))-.1 E F0 .482(Kill the w)144 472.8 R .482 -(ord behind the cursor)-.1 F 2.982(,u)-.4 G .482 -(sing white space as a w)-2.982 F .482(ord boundary)-.1 F 5.482(.T)-.65 -G .482(he w)-5.482 F .481(ord boundaries are)-.1 F(dif)144 484.8 Q -(ferent from)-.25 E F1(backward\255kill\255w)2.5 E(ord)-.1 E F0(.)A F1 -(delete\255horizontal\255space \(M\255\\\))108 496.8 Q F0 -(Delete all spaces and tabs around point.)144 508.8 Q F1(kill\255r)108 -520.8 Q(egion)-.18 E F0 1.13(Kill the te)144 532.8 R 1.13 -(xt between the point and)-.15 F/F2 10/Times-Italic@0 SF(mark)3.63 E F0 -(\(sa)3.63 E -.15(ve)-.2 G 3.63(dc).15 G 1.13(ursor position\).)-3.63 F -1.13(This te)6.13 F 1.13(xt is referred to as the)-.15 F F2 -.37(re)144 -544.8 S(gion)-.03 E F0(.)A F1(copy\255r)108 556.8 Q(egion\255as\255kill) --.18 E F0(Cop)144 568.8 Q 2.5(yt)-.1 G(he te)-2.5 E(xt in the re)-.15 E -(gion to the kill b)-.15 E(uf)-.2 E(fer)-.25 E(.)-.55 E F1 -(copy\255backward\255w)108 580.8 Q(ord)-.1 E F0(Cop)144 592.8 Q 4.801 -(yt)-.1 G 2.301(he w)-4.801 F 2.301(ord before point to the kill b)-.1 F -(uf)-.2 E(fer)-.25 E 7.301(.T)-.55 G 2.301(he w)-7.301 F 2.3 -(ord boundaries are the same as)-.1 F F1(back-)4.8 E(ward\255w)144 604.8 -Q(ord)-.1 E F0(.)A F1(copy\255f)108 616.8 Q(orward\255w)-.25 E(ord)-.1 E -F0(Cop)144 628.8 Q 4.507(yt)-.1 G 2.007(he w)-4.507 F 2.007(ord follo) --.1 F 2.007(wing point to the kill b)-.25 F(uf)-.2 E(fer)-.25 E 7.008 -(.T)-.55 G 2.008(he w)-7.008 F 2.008(ord boundaries are the same as)-.1 -F F1 -.25(fo)4.508 G -.37(r-).25 G(ward\255w)144 640.8 Q(ord)-.1 E F0(.) -A F1(yank \(C\255y\))108 652.8 Q F0 -1(Ya)144 664.8 S -(nk the top of the kill ring into the b)1 E(uf)-.2 E(fer at the cursor) --.25 E(.)-.55 E F1(yank\255pop \(M\255y\))108 676.8 Q F0 -(Rotate the kill ring, and yank the ne)144 688.8 Q 2.5(wt)-.25 G 2.5 -(op. Only)-2.5 F -.1(wo)2.5 G(rks follo).1 E(wing)-.25 E F1(yank)2.5 E -F0(or)2.5 E F1(yank\255pop)2.5 E F0(.)A F1(Numeric Ar)87 705.6 Q -(guments)-.1 E F0(GNU Readline 4.2)72 768 Q(2001 Feb 5)136.79 E(7)206.5 -E EP -%%Page: 8 8 -%%BeginPageSetup -BP -%%EndPageSetup -/F0 10/Times-Roman@0 SF 342.2(READLINE\(3\) READLINE\(3\))72 48 R/F1 10 -/Times-Bold@0 SF(digit\255ar)108 84 Q -(gument \(M\2550, M\2551, ..., M\255\255\))-.1 E F0 .642 -(Add this digit to the ar)144 96 R .641 -(gument already accumulating, or start a ne)-.18 F 3.141(wa)-.25 G -.18 -(rg)-3.141 G 3.141(ument. M\255\255).18 F .641(starts a ne)3.141 F(g-) --.15 E(ati)144 108 Q .3 -.15(ve a)-.25 H -.18(rg).15 G(ument.).18 E F1 -(uni)108 120 Q -.1(ve)-.1 G(rsal\255ar).1 E(gument)-.1 E F0 .778 -(This is another w)144 132 R .779(ay to specify an ar)-.1 F 3.279 -(gument. If)-.18 F .779(this command is follo)3.279 F .779 -(wed by one or more digits,)-.25 F 1.376 -(optionally with a leading minus sign, those digits de\214ne the ar)144 -144 R 3.876(gument. If)-.18 F 1.376(the command is fol-)3.876 F(lo)144 -156 Q 1.17(wed by digits, e)-.25 F -.15(xe)-.15 G(cuting).15 E F1(uni) -3.67 E -.1(ve)-.1 G(rsal\255ar).1 E(gument)-.1 E F0(ag)3.67 E 1.17 -(ain ends the numeric ar)-.05 F 1.17(gument, b)-.18 F 1.17(ut is other) --.2 F(-)-.2 E .899(wise ignored.)144 168 R .898 -(As a special case, if this command is immediately follo)5.899 F .898 -(wed by a character that is)-.25 F .243 -(neither a digit or minus sign, the ar)144 180 R .243 -(gument count for the ne)-.18 F .243(xt command is multiplied by four) --.15 F 5.243(.T)-.55 G(he)-5.243 E(ar)144 192 Q .378 -(gument count is initially one, so e)-.18 F -.15(xe)-.15 G .378 -(cuting this function the \214rst time mak).15 F .378(es the ar)-.1 F -.378(gument count)-.18 F(four)144 204 Q 2.5(,as)-.4 G(econd time mak) --2.5 E(es the ar)-.1 E(gument count sixteen, and so on.)-.18 E F1 -(Completing)87 220.8 Q(complete \(T)108 232.8 Q(AB\))-.9 E F0 1.908 -(Attempt to perform completion on the te)144 244.8 R 1.908 -(xt before point.)-.15 F 1.909(The actual completion performed is)6.909 -F(application-speci\214c.)144 256.8 Q F1(Bash)5.518 E F0 3.018(,f)C .518 -(or instance, attempts completion treating the te)-3.018 F .517 -(xt as a v)-.15 F .517(ariable \(if the)-.25 F(te)144 268.8 Q .656 -(xt be)-.15 F .656(gins with)-.15 F F1($)3.156 E F0 .656 -(\), username \(if the te)B .656(xt be)-.15 F .656(gins with)-.15 F F1 -(~)3.156 E F0 .656(\), hostname \(if the te)B .656(xt be)-.15 F .656 -(gins with)-.15 F F1(@)3.157 E F0 .657(\), or)B .93 -(command \(including aliases and functions\) in turn.)144 280.8 R .929 -(If none of these produces a match, \214lename)5.929 F 1.273 -(completion is attempted.)144 292.8 R F1(Gdb)6.273 E F0 3.773(,o)C 3.773 -(nt)-3.773 G 1.273(he other hand, allo)-3.773 F 1.273 -(ws completion of program functions and)-.25 F -.25(va)144 304.8 S(riab\ -les, and only attempts \214lename completion under certain circumstance\ -s.).25 E F1(possible\255completions \(M\255?\))108 316.8 Q F0 -(List the possible completions of the te)144 328.8 Q(xt before point.) --.15 E F1(insert\255completions \(M\255*\))108 340.8 Q F0 .783 -(Insert all completions of the te)144 352.8 R .783 -(xt before point that w)-.15 F .783(ould ha)-.1 F 1.083 -.15(ve b)-.2 H -.783(een generated by).15 F F1(possible\255com-)3.282 E(pletions)144 -364.8 Q F0(.)A F1(menu\255complete)108 376.8 Q F0 .928(Similar to)144 -388.8 R F1(complete)3.428 E F0 3.428(,b)C .929(ut replaces the w)-3.628 -F .929(ord to be completed with a single match from the list of)-.1 F -1.194(possible completions.)144 400.8 R 1.194(Repeated e)6.194 F -.15 -(xe)-.15 G 1.194(cution of).15 F F1(menu\255complete)3.694 E F0 1.193 -(steps through the list of possible)3.694 F .828 -(completions, inserting each match in turn.)144 412.8 R .828 -(At the end of the list of completions, the bell is rung)5.828 F 2.049 -(and the original te)144 424.8 R 2.049(xt is restored.)-.15 F 2.048 -(An ar)7.048 F 2.048(gument of)-.18 F/F2 10/Times-Italic@0 SF(n)4.548 E -F0(mo)4.548 E -.15(ve)-.15 G(s).15 E F2(n)4.548 E F0 2.048 -(positions forw)4.548 F 2.048(ard in the list of)-.1 F .648 -(matches; a ne)144 436.8 R -.05(ga)-.15 G(ti).05 E .948 -.15(ve a)-.25 H --.18(rg).15 G .649(ument may be used to mo).18 F .949 -.15(ve b)-.15 H -(ackw).15 E .649(ard through the list.)-.1 F .649(This command is)5.649 -F(intended to be bound to)144 448.8 Q F1 -.9(TA)2.5 G(B).9 E F0 2.5(,b)C -(ut is unbound by def)-2.7 E(ault.)-.1 E F1 -(delete\255char\255or\255list)108 460.8 Q F0 .374 -(Deletes the character under the cursor if not at the be)144 472.8 R -.373(ginning or end of the line \(lik)-.15 F(e)-.1 E F1(delete-char) -2.873 E F0(\).)A(If at the end of the line, beha)144 484.8 Q -.15(ve)-.2 -G 2.5(si).15 G(dentically to)-2.5 E F1(possible-completions)2.5 E F0(.)A -F1 -.25(Ke)87 501.6 S(yboard Macr).25 E(os)-.18 E(start\255kbd\255macr) -108 513.6 Q 2.5(o\()-.18 G(C\255x \()-2.5 E(\)).833 E F0(Be)144 525.6 Q -(gin sa)-.15 E(ving the characters typed into the current k)-.2 E -.15 -(ey)-.1 G(board macro.).15 E F1(end\255kbd\255macr)108 537.6 Q 2.5(o\() --.18 G(C\255x \))-2.5 E(\)).833 E F0(Stop sa)144 549.6 Q -(ving the characters typed into the current k)-.2 E -.15(ey)-.1 G -(board macro and store the de\214nition.).15 E F1 -(call\255last\255kbd\255macr)108 561.6 Q 2.5(o\()-.18 G(C\255x e\))-2.5 -E F0(Re-e)144 573.6 Q -.15(xe)-.15 G .999(cute the last k).15 F -.15(ey) --.1 G .999(board macro de\214ned, by making the characters in the macro\ - appear as if).15 F(typed at the k)144 585.6 Q -.15(ey)-.1 G(board.).15 -E F1(Miscellaneous)87 602.4 Q -.18(re)108 614.4 S.18 E -(ead\255init\255\214le \(C\255x C\255r\))-.18 E F0 1.777 -(Read in the contents of the)144 626.4 R F2(inputr)4.277 E(c)-.37 E F0 -1.776(\214le, and incorporate an)4.276 F 4.276(yb)-.15 G 1.776 -(indings or v)-4.276 F 1.776(ariable assignments)-.25 F(found there.)144 -638.4 Q F1(abort \(C\255g\))108 650.4 Q F0 3.248 -(Abort the current editing command and ring the terminal')144 662.4 R -5.749(sb)-.55 G 3.249(ell \(subject to the setting of)-5.749 F F1 -(bell\255style)144 674.4 Q F0(\).)A F1(do\255upper)108 686.4 Q -(case\255v)-.18 E(ersion \(M\255a, M\255b, M\255)-.1 E F2(x)A F1 2.5(,.) -C(..\))-2.5 E F0 1.756(If the meta\214ed character)144 698.4 R F2(x) -4.256 E F0 1.755(is lo)4.256 F 1.755 -(wercase, run the command that is bound to the corresponding)-.25 F -(uppercase character)144 710.4 Q(.)-.55 E(GNU Readline 4.2)72 768 Q -(2001 Feb 5)136.79 E(8)206.5 E EP -%%Page: 9 9 -%%BeginPageSetup -BP -%%EndPageSetup -/F0 10/Times-Roman@0 SF 342.2(READLINE\(3\) READLINE\(3\))72 48 R/F1 10 -/Times-Bold@0 SF(pr)108 84 Q(e\214x\255meta \(ESC\))-.18 E F0 -(Metafy the ne)144 96 Q(xt character typed.)-.15 E/F2 9/Times-Bold@0 SF -(ESC)5 E F1(f)2.25 E F0(is equi)2.5 E -.25(va)-.25 G(lent to).25 E F1 -(Meta\255f)2.5 E F0(.)A F1(undo \(C\255_, C\255x C\255u\))108 108 Q F0 -(Incremental undo, separately remembered for each line.)144 120 Q F1 --2.29 -.18(re v)108 132 T(ert\255line \(M\255r\)).08 E F0 1.095 -(Undo all changes made to this line.)144 144 R 1.095(This is lik)6.095 F -3.595(ee)-.1 G -.15(xe)-3.745 G 1.095(cuting the).15 F F1(undo)3.595 E -F0 1.095(command enough times to)3.595 F -(return the line to its initial state.)144 156 Q F1 -(tilde\255expand \(M\255&\))108 168 Q F0(Perform tilde e)144 180 Q -(xpansion on the current w)-.15 E(ord.)-.1 E F1 -(set\255mark \(C\255@, M\255\))108 192 Q F0 .591 -(Set the mark to the current point.)144 204 R .591(If a numeric ar)5.591 -F .59(gument is supplied, the mark is set to that posi-)-.18 F(tion.)144 -216 Q F1(exchange\255point\255and\255mark \(C\255x C\255x\))108 228 Q F0 -(Sw)144 240 Q .282(ap the point with the mark.)-.1 F .283 -(The current cursor position is set to the sa)5.283 F -.15(ve)-.2 G -2.783(dp).15 G .283(osition, and the old)-2.783 F(cursor position is sa) -144 252 Q -.15(ve)-.2 G 2.5(da).15 G 2.5(st)-2.5 G(he mark.)-2.5 E F1 -(character\255sear)108 264 Q(ch \(C\255]\))-.18 E F0 3.036(Ac)144 276 S -.536(haracter is read and point is mo)-3.036 F -.15(ve)-.15 G 3.035(dt) -.15 G 3.035(ot)-3.035 G .535(he ne)-3.035 F .535 -(xt occurrence of that character)-.15 F 5.535(.A)-.55 G(ne)-2.5 E -.05 -(ga)-.15 G(ti).05 E .835 -.15(ve c)-.25 H(ount).15 E(searches for pre) -144 288 Q(vious occurrences.)-.25 E F1(character\255sear)108 300 Q -(ch\255backward \(M\255C\255]\))-.18 E F0 3.543(Ac)144 312 S 1.043 -(haracter is read and point is mo)-3.543 F -.15(ve)-.15 G 3.544(dt).15 G -3.544(ot)-3.544 G 1.044(he pre)-3.544 F 1.044 -(vious occurrence of that character)-.25 F 6.044(.A)-.55 G(ne)-2.5 E --.05(ga)-.15 G(ti).05 E -.15(ve)-.25 G -(count searches for subsequent occurrences.)144 324 Q F1 -(insert\255comment \(M\255#\))108 336 Q F0 .291(The v)144 348 R .291 -(alue of the readline)-.25 F F1(comment\255begin)2.791 E F0 -.25(va) -2.791 G .291(riable is inserted at the be).25 F .29 -(ginning of the current line,)-.15 F 1.277 -(and the line is accepted as if a ne)144 360 R 1.277 -(wline had been typed.)-.25 F 1.277(The def)6.277 F 1.277(ault v)-.1 F -1.277(alue of)-.25 F F1(comment\255begin)3.777 E F0(mak)144 372 Q -(es the current line a shell comment.)-.1 E F1(dump\255functions)108 384 -Q F0 .627(Print all of the functions and their k)144 396 R .927 -.15 -(ey b)-.1 H .626(indings to the readline output stream.).15 F .626 -(If a numeric ar)5.626 F(gu-)-.18 E -(ment is supplied, the output is formatted in such a w)144 408 Q -(ay that it can be made part of an)-.1 E/F3 10/Times-Italic@0 SF(inputr) -2.5 E(c)-.37 E F0(\214le.)2.5 E F1(dump\255v)108 420 Q(ariables)-.1 E F0 -.283(Print all of the settable v)144 432 R .283(ariables and their v) --.25 F .283(alues to the readline output stream.)-.25 F .283 -(If a numeric ar)5.283 F(gu-)-.18 E -(ment is supplied, the output is formatted in such a w)144 444 Q -(ay that it can be made part of an)-.1 E F3(inputr)2.5 E(c)-.37 E F0 -(\214le.)2.5 E F1(dump\255macr)108 456 Q(os)-.18 E F0 .756 -(Print all of the readline k)144 468 R 1.056 -.15(ey s)-.1 H .756 -(equences bound to macros and the strings the).15 F 3.256(yo)-.15 G -3.256(uput. If)-3.256 F 3.255(an)3.255 G(umeric)-3.255 E(ar)144 480 Q -.528(gument is supplied, the output is formatted in such a w)-.18 F .528 -(ay that it can be made part of an)-.1 F F3(inputr)3.028 E(c)-.37 E F0 -(\214le.)144 492 Q F1(emacs\255editing\255mode \(C\255e\))108 504 Q F0 -(When in)144 516 Q F1(vi)2.5 E F0(editing mode, this causes a switch to) -2.5 E F1(emacs)2.5 E F0(editing mode.)2.5 E F1 -(vi\255editing\255mode \(M\255C\255j\))108 528 Q F0(When in)144 540 Q F1 -(emacs)2.5 E F0(editing mode, this causes a switch to)2.5 E F1(vi)2.5 E -F0(editing mode.)2.5 E F2(DEF)72 556.8 Q -.45(AU)-.81 G 1.656 -.828 -(LT K).45 H(EY BINDINGS).828 E F0 .065(The follo)108 568.8 R .065 -(wing is a list of the def)-.25 F .065(ault emacs and vi bindings.)-.1 F -.064(Characters with the eighth bit set are written as)5.064 F .615 -(M\255, and are referred to as)108 580.8 R F3(meta\214ed) -3.115 E F0 3.115(characters. The)3.115 F .616 -(printable ASCII characters not mentioned)3.116 F 1.116 -(in the list of emacs standard bindings are bound to the)108 592.8 R F1 -(self\255insert)3.615 E F0 1.115(function, which just inserts the gi) -3.615 F -.15(ve)-.25 G(n).15 E .945(character into the input line.)108 -604.8 R .945(In vi insertion mode, all characters not speci\214cally me\ -ntioned are bound to)5.945 F F1(self\255insert)108 616.8 Q F0 5.359(.C)C -.359(haracters assigned to signal generation by)-5.359 F F3(stty)2.859 E -F0 .359(\(1\) or the terminal dri).32 F -.15(ve)-.25 G 1.159 -.4(r, s) -.15 H .358(uch as C-Z or C-C,).4 F .187(retain that function.)108 628.8 -R .187(Upper and lo)5.187 F .188(wer case meta\214ed characters are bou\ -nd to the same function in the emacs)-.25 F .305(mode meta k)108 640.8 R --.15(ey)-.1 G 2.805(map. The).15 F .305(remaining characters are unboun\ -d, which causes readline to ring the bell \(subject)2.805 F -(to the setting of the)108 652.8 Q F1(bell\255style)2.5 E F0 -.25(va)2.5 -G(riable\).).25 E F1(Emacs Mode)87 669.6 Q F0(Emacs Standard bindings) -151.2 681.6 Q 2.5("C-@" set-mark)151.2 705.6 R 2.5("C-A" be)151.2 717.6 -R(ginning-of-line)-.15 E 2.5("C-B" backw)151.2 729.6 R(ard-char)-.1 E -(GNU Readline 4.2)72 768 Q(2001 Feb 5)136.79 E(9)206.5 E EP -%%Page: 10 10 -%%BeginPageSetup -BP -%%EndPageSetup -/F0 10/Times-Roman@0 SF 342.2(READLINE\(3\) READLINE\(3\))72 48 R 2.5 -("C-D" delete-char)151.2 84 R 2.5("C-E" end-of-line)151.2 96 R 2.5 -("C-F" forw)151.2 108 R(ard-char)-.1 E 2.5("C-G" abort)151.2 120 R 2.5 -("C-H" backw)151.2 132 R(ard-delete-char)-.1 E 2.5("C-I" complete)151.2 -144 R 2.5("C-J" accept-line)151.2 156 R 2.5("C-K" kill-line)151.2 168 R -2.5("C-L" clear)151.2 180 R(-screen)-.2 E 2.5("C-M" accept-line)151.2 -192 R 2.5("C-N" ne)151.2 204 R(xt-history)-.15 E 2.5("C-P" pre)151.2 216 -R(vious-history)-.25 E 2.5("C-Q" quoted-insert)151.2 228 R 2.5("C-R" re) -151.2 240 R -.15(ve)-.25 G(rse-search-history).15 E 2.5("C-S" forw)151.2 -252 R(ard-search-history)-.1 E 2.5("C-T" transpose-chars)151.2 264 R 2.5 -("C-U" unix-line-discard)151.2 276 R 2.5("C-V" quoted-insert)151.2 288 R -2.5("C-W" unix-w)151.2 300 R(ord-rubout)-.1 E 2.5("C-Y" yank)151.2 312 R -2.5("C-]" character)151.2 324 R(-search)-.2 E 2.5("C-_" undo)151.2 336 R -3.333("")151.2 348 S(to "/")-.833 E(self-insert)5 E 2.5("0" to)151.2 360 -R 2.5("9" self-insert)2.5 F 2.5(":" to)151.2 372 R 2.5("~" self-insert) -2.5 F 2.5("C-?" backw)151.2 384 R(ard-delete-char)-.1 E -(Emacs Meta bindings)151.2 400.8 Q 2.5("M-C-G" abort)151.2 424.8 R 2.5 -("M-C-H" backw)151.2 436.8 R(ard-kill-w)-.1 E(ord)-.1 E 2.5 -("M-C-I" tab-insert)151.2 448.8 R 2.5("M-C-J" vi-editing-mode)151.2 -460.8 R 2.5("M-C-M" vi-editing-mode)151.2 472.8 R 2.5("M-C-R" re)151.2 -484.8 R -.15(ve)-.25 G(rt-line).15 E 2.5("M-C-Y" 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deleted file mode 100644 index 72da63ace1817194aaa4a18e8fd1b1706eee6ba9..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 GIT binary patch literal 0 Hc$@ - - - -GNU Readline Library - - -

    GNU Readline Library User Interface

    -

    Edition 4.2-beta, for Readline Library Version 4.2-beta.

    -

    Feb 2001

    -
    Brian Fox, Free Software Foundation
    -
    Chet Ramey, Case Western Reserve University
    -

    -

    -

    Table of Contents

    - -

    - -

    -This document describes the end user interface of the GNU Readline Library, -a utility which aids in the consistency of user interface across discrete -programs that need to provide a command line interface. - -

    -

    -Published by the Free Software Foundation
    -59 Temple Place, Suite 330,
    -Boston, MA 02111 USA - -

    -

    -Permission is granted to make and distribute verbatim copies of -this manual provided the copyright notice and this permission notice -are preserved on all copies. - -

    -

    -Permission is granted to copy and distribute modified versions of this -manual under the conditions for verbatim copying, provided that the entire -resulting derived work is distributed under the terms of a permission -notice identical to this one. - -

    -

    -Permission is granted to copy and distribute translations of this manual -into another language, under the above conditions for modified versions, -except that this permission notice may be stated in a translation approved -by the Free Software Foundation. - -

    -

    -Copyright (C) 1988-2001 Free Software Foundation, Inc. - -

    - - - -

    Command Line Editing

    - -

    -This chapter describes the basic features of the GNU -command line editing interface. - -

    - - - - - -

    Introduction to Line Editing

    - -

    -The following paragraphs describe the notation used to represent -keystrokes. - -

    -

    -The text C-k is read as `Control-K' and describes the character -produced when the k key is pressed while the Control key -is depressed. - -

    -

    -The text M-k is read as `Meta-K' and describes the character -produced when the Meta key (if you have one) is depressed, and the k -key is pressed. -The Meta key is labeled ALT on many keyboards. -On keyboards with two keys labeled ALT (usually to either side of -the space bar), the ALT on the left side is generally set to -work as a Meta key. -The ALT key on the right may also be configured to work as a -Meta key or may be configured as some other modifier, such as a -Compose key for typing accented characters. - -

    -

    -If you do not have a Meta or ALT key, or another key working as -a Meta key, the identical keystroke can be generated by typing ESC -first, and then typing k. -Either process is known as metafying the k key. - -

    -

    -The text M-C-k is read as `Meta-Control-k' and describes the -character produced by metafying C-k. - -

    -

    -In addition, several keys have their own names. Specifically, -DEL, ESC, LFD, SPC, RET, and TAB all -stand for themselves when seen in this text, or in an init file -(see section Readline Init File). -If your keyboard lacks a LFD key, typing C-j will -produce the desired character. -The RET key may be labeled Return or Enter on -some keyboards. - -

    - - -

    Readline Interaction

    -

    - - -

    -

    -Often during an interactive session you type in a long line of text, -only to notice that the first word on the line is misspelled. The -Readline library gives you a set of commands for manipulating the text -as you type it in, allowing you to just fix your typo, and not forcing -you to retype the majority of the line. Using these editing commands, -you move the cursor to the place that needs correction, and delete or -insert the text of the corrections. Then, when you are satisfied with -the line, you simply press RET. You do not have to be at the -end of the line to press RET; the entire line is accepted -regardless of the location of the cursor within the line. - -

    - - - - - -

    Readline Bare Essentials

    -

    - - - - -

    -

    -In order to enter characters into the line, simply type them. The typed -character appears where the cursor was, and then the cursor moves one -space to the right. If you mistype a character, you can use your -erase character to back up and delete the mistyped character. - -

    -

    -Sometimes you may mistype a character, and -not notice the error until you have typed several other characters. In -that case, you can type C-b to move the cursor to the left, and then -correct your mistake. Afterwards, you can move the cursor to the right -with C-f. - -

    -

    -When you add text in the middle of a line, you will notice that characters -to the right of the cursor are `pushed over' to make room for the text -that you have inserted. Likewise, when you delete text behind the cursor, -characters to the right of the cursor are `pulled back' to fill in the -blank space created by the removal of the text. A list of the bare -essentials for editing the text of an input line follows. - -

    -
    - -
    C-b -
    -Move back one character. -
    C-f -
    -Move forward one character. -
    DEL or Backspace -
    -Delete the character to the left of the cursor. -
    C-d -
    -Delete the character underneath the cursor. -
    Printing characters -
    -Insert the character into the line at the cursor. -
    C-_ or C-x C-u -
    -Undo the last editing command. You can undo all the way back to an -empty line. -
    - -

    -(Depending on your configuration, the Backspace key be set to -delete the character to the left of the cursor and the DEL key set -to delete the character underneath the cursor, like C-d, rather -than the character to the left of the cursor.) - -

    - - -

    Readline Movement Commands

    - -

    -The above table describes the most basic keystrokes that you need -in order to do editing of the input line. For your convenience, many -other commands have been added in addition to C-b, C-f, -C-d, and DEL. Here are some commands for moving more rapidly -about the line. - -

    -
    - -
    C-a -
    -Move to the start of the line. -
    C-e -
    -Move to the end of the line. -
    M-f -
    -Move forward a word, where a word is composed of letters and digits. -
    M-b -
    -Move backward a word. -
    C-l -
    -Clear the screen, reprinting the current line at the top. -
    - -

    -Notice how C-f moves forward a character, while M-f moves -forward a word. It is a loose convention that control keystrokes -operate on characters while meta keystrokes operate on words. - -

    - - -

    Readline Killing Commands

    - -

    - - - -

    -

    -Killing text means to delete the text from the line, but to save -it away for later use, usually by yanking (re-inserting) -it back into the line. -(`Cut' and `paste' are more recent jargon for `kill' and `yank'.) - -

    -

    -If the description for a command says that it `kills' text, then you can -be sure that you can get the text back in a different (or the same) -place later. - -

    -

    -When you use a kill command, the text is saved in a kill-ring. -Any number of consecutive kills save all of the killed text together, so -that when you yank it back, you get it all. The kill -ring is not line specific; the text that you killed on a previously -typed line is available to be yanked back later, when you are typing -another line. - - -

    -

    -Here is the list of commands for killing text. - -

    -
    - -
    C-k -
    -Kill the text from the current cursor position to the end of the line. - -
    M-d -
    -Kill from the cursor to the end of the current word, or, if between -words, to the end of the next word. -Word boundaries are the same as those used by M-f. - -
    M-DEL -
    -Kill from the cursor the start of the previous word, or, if between -words, to the start of the previous word. -Word boundaries are the same as those used by M-b. - -
    C-w -
    -Kill from the cursor to the previous whitespace. This is different than -M-DEL because the word boundaries differ. - -
    - -

    -Here is how to yank the text back into the line. Yanking -means to copy the most-recently-killed text from the kill buffer. - -

    -
    - -
    C-y -
    -Yank the most recently killed text back into the buffer at the cursor. - -
    M-y -
    -Rotate the kill-ring, and yank the new top. You can only do this if -the prior command is C-y or M-y. -
    - - - -

    Readline Arguments

    - -

    -You can pass numeric arguments to Readline commands. Sometimes the -argument acts as a repeat count, other times it is the sign of the -argument that is significant. If you pass a negative argument to a -command which normally acts in a forward direction, that command will -act in a backward direction. For example, to kill text back to the -start of the line, you might type `M-- C-k'. - -

    -

    -The general way to pass numeric arguments to a command is to type meta -digits before the command. If the first `digit' typed is a minus -sign (`-'), then the sign of the argument will be negative. Once -you have typed one meta digit to get the argument started, you can type -the remainder of the digits, and then the command. For example, to give -the C-d command an argument of 10, you could type `M-1 0 C-d', -which will delete the next ten characters on the input line. - -

    - - -

    Searching for Commands in the History

    - -

    -Readline provides commands for searching through the command history -for lines containing a specified string. -There are two search modes: incremental and non-incremental. - -

    -

    -Incremental searches begin before the user has finished typing the -search string. -As each character of the search string is typed, Readline displays -the next entry from the history matching the string typed so far. -An incremental search requires only as many characters as needed to -find the desired history entry. -To search backward in the history for a particular string, type -C-r. Typing C-s searches forward through the history. -The characters present in the value of the isearch-terminators variable -are used to terminate an incremental search. -If that variable has not been assigned a value, the ESC and -C-J characters will terminate an incremental search. -C-g will abort an incremental search and restore the original line. -When the search is terminated, the history entry containing the -search string becomes the current line. - -

    -

    -To find other matching entries in the history list, type C-r or -C-s as appropriate. -This will search backward or forward in the history for the next -entry matching the search string typed so far. -Any other key sequence bound to a Readline command will terminate -the search and execute that command. -For instance, a RET will terminate the search and accept -the line, thereby executing the command from the history list. -A movement command will terminate the search, make the last line found -the current line, and begin editing. - -

    -

    -Non-incremental searches read the entire search string before starting -to search for matching history lines. The search string may be -typed by the user or be part of the contents of the current line. - -

    - - -

    Readline Init File

    -

    - - -

    -

    -Although the Readline library comes with a set of Emacs-like -keybindings installed by default, it is possible to use a different set -of keybindings. -Any user can customize programs that use Readline by putting -commands in an inputrc file, conventionally in his home directory. -The name of this -file is taken from the value of the environment variable @env{INPUTRC}. If -that variable is unset, the default is `~/.inputrc'. - -

    -

    -When a program which uses the Readline library starts up, the -init file is read, and the key bindings are set. - -

    -

    -In addition, the C-x C-r command re-reads this init file, thus -incorporating any changes that you might have made to it. - -

    - - - - - -

    Readline Init File Syntax

    - -

    -There are only a few basic constructs allowed in the -Readline init file. Blank lines are ignored. -Lines beginning with a `#' are comments. -Lines beginning with a `$' indicate conditional -constructs (see section Conditional Init Constructs). Other lines -denote variable settings and key bindings. - -

    -
    - -
    Variable Settings -
    -You can modify the run-time behavior of Readline by -altering the values of variables in Readline -using the set command within the init file. Here is how to -change from the default Emacs-like key binding to use -vi line editing commands: - - -
    -set editing-mode vi
-
    - -A great deal of run-time behavior is changeable with the following -variables. - -
    - -
    bell-style -
    - -Controls what happens when Readline wants to ring the terminal bell. -If set to `none', Readline never rings the bell. If set to -`visible', Readline uses a visible bell if one is available. -If set to `audible' (the default), Readline attempts to ring -the terminal's bell. - -
    comment-begin -
    - -The string to insert at the beginning of the line when the -insert-comment command is executed. The default value -is "#". - -
    completion-ignore-case -
    -If set to `on', Readline performs filename matching and completion -in a case-insensitive fashion. -The default value is `off'. - -
    completion-query-items -
    - -The number of possible completions that determines when the user is -asked whether he wants to see the list of possibilities. If the -number of possible completions is greater than this value, -Readline will ask the user whether or not he wishes to view -them; otherwise, they are simply listed. -This variable must be set to an integer value greater than or equal to 0. -The default limit is 100. - -
    convert-meta -
    - -If set to `on', Readline will convert characters with the -eighth bit set to an ASCII key sequence by stripping the eighth -bit and prefixing an ESC character, converting them to a -meta-prefixed key sequence. The default value is `on'. - -
    disable-completion -
    - -If set to `On', Readline will inhibit word completion. -Completion characters will be inserted into the line as if they had -been mapped to self-insert. The default is `off'. - -
    editing-mode -
    - -The editing-mode variable controls which default set of -key bindings is used. By default, Readline starts up in Emacs editing -mode, where the keystrokes are most similar to Emacs. This variable can be -set to either `emacs' or `vi'. - -
    enable-keypad -
    - -When set to `on', Readline will try to enable the application -keypad when it is called. Some systems need this to enable the -arrow keys. The default is `off'. - -
    expand-tilde -
    - -If set to `on', tilde expansion is performed when Readline -attempts word completion. The default is `off'. - -
    horizontal-scroll-mode -
    - -This variable can be set to either `on' or `off'. Setting it -to `on' means that the text of the lines being edited will scroll -horizontally on a single screen line when they are longer than the width -of the screen, instead of wrapping onto a new screen line. By default, -this variable is set to `off'. - -
    input-meta -
    - - -If set to `on', Readline will enable eight-bit input (it -will not clear the eighth bit in the characters it reads), -regardless of what the terminal claims it can support. The -default value is `off'. The name meta-flag is a -synonym for this variable. - -
    isearch-terminators -
    - -The string of characters that should terminate an incremental search without -subsequently executing the character as a command (see section Searching for Commands in the History). -If this variable has not been given a value, the characters ESC and -C-J will terminate an incremental search. - -
    keymap -
    - -Sets Readline's idea of the current keymap for key binding commands. -Acceptable keymap names are -emacs, -emacs-standard, -emacs-meta, -emacs-ctlx, -vi, -vi-move, -vi-command, and -vi-insert. -vi is equivalent to vi-command; emacs is -equivalent to emacs-standard. The default value is emacs. -The value of the editing-mode variable also affects the -default keymap. - -
    mark-directories -
    -If set to `on', completed directory names have a slash -appended. The default is `on'. - -
    mark-modified-lines -
    - -This variable, when set to `on', causes Readline to display an -asterisk (`*') at the start of history lines which have been modified. -This variable is `off' by default. - -
    output-meta -
    - -If set to `on', Readline will display characters with the -eighth bit set directly rather than as a meta-prefixed escape -sequence. The default is `off'. - -
    print-completions-horizontally -
    -If set to `on', Readline will display completions with matches -sorted horizontally in alphabetical order, rather than down the screen. -The default is `off'. - -
    show-all-if-ambiguous -
    - -This alters the default behavior of the completion functions. If -set to `on', -words which have more than one possible completion cause the -matches to be listed immediately instead of ringing the bell. -The default value is `off'. - -
    visible-stats -
    - -If set to `on', a character denoting a file's type -is appended to the filename when listing possible -completions. The default is `off'. - -
    - -
    Key Bindings -
    -The syntax for controlling key bindings in the init file is -simple. First you need to find the name of the command that you -want to change. The following sections contain tables of the command -name, the default keybinding, if any, and a short description of what -the command does. - -Once you know the name of the command, simply place on a line -in the init file the name of the key -you wish to bind the command to, a colon, and then the name of the -command. The name of the key -can be expressed in different ways, depending on what you find most -comfortable. - -
    - -
    keyname: function-name or macro -
    -keyname is the name of a key spelled out in English. For example: - -
    -Control-u: universal-argument
-Meta-Rubout: backward-kill-word
-Control-o: "> output"
-
    - -In the above example, C-u is bound to the function -universal-argument, -M-DEL is bound to the function backward-kill-word, and -C-o is bound to run the macro -expressed on the right hand side (that is, to insert the text -`> output' into the line). - -A number of symbolic character names are recognized while -processing this key binding syntax: -DEL, -ESC, -ESCAPE, -LFD, -NEWLINE, -RET, -RETURN, -RUBOUT, -SPACE, -SPC, -and -TAB. - -
    "keyseq": function-name or macro -
    -keyseq differs from keyname above in that strings -denoting an entire key sequence can be specified, by placing -the key sequence in double quotes. Some GNU Emacs style key -escapes can be used, as in the following example, but the -special character names are not recognized. - - -
    -"\C-u": universal-argument
-"\C-x\C-r": re-read-init-file
-"\e[11~": "Function Key 1"
-
    - -In the above example, C-u is again bound to the function -universal-argument (just as it was in the first example), -`C-x C-r' is bound to the function re-read-init-file, -and `ESC [ 1 1 ~' is bound to insert -the text `Function Key 1'. - -
    - -The following GNU Emacs style escape sequences are available when -specifying key sequences: - -
    - -
    \C- -
    -control prefix -
    \M- -
    -meta prefix -
    \e -
    -an escape character -
    \\ -
    -backslash -
    \" -
    -", a double quotation mark -
    \' -
    -', a single quote or apostrophe -
    - -In addition to the GNU Emacs style escape sequences, a second -set of backslash escapes is available: - -
    - -
    \a -
    -alert (bell) -
    \b -
    -backspace -
    \d -
    -delete -
    \f -
    -form feed -
    \n -
    -newline -
    \r -
    -carriage return -
    \t -
    -horizontal tab -
    \v -
    -vertical tab -
    \nnn -
    -the character whose ASCII code is the octal value nnn -(one to three digits) -
    \xnnn -
    -the character whose ASCII code is the hexadecimal value nnn -(one to three digits) -
    - -When entering the text of a macro, single or double quotes must -be used to indicate a macro definition. -Unquoted text is assumed to be a function name. -In the macro body, the backslash escapes described above are expanded. -Backslash will quote any other character in the macro text, -including `"' and `''. -For example, the following binding will make `C-x \' -insert a single `\' into the line: - -
    -"\C-x\\": "\\"
-
    - -
    - - - -

    Conditional Init Constructs

    - -

    -Readline implements a facility similar in spirit to the conditional -compilation features of the C preprocessor which allows key -bindings and variable settings to be performed as the result -of tests. There are four parser directives used. - -

    -
    - -
    $if -
    -The $if construct allows bindings to be made based on the -editing mode, the terminal being used, or the application using -Readline. The text of the test extends to the end of the line; -no characters are required to isolate it. - -
    - -
    mode -
    -The mode= form of the $if directive is used to test -whether Readline is in emacs or vi mode. -This may be used in conjunction -with the `set keymap' command, for instance, to set bindings in -the emacs-standard and emacs-ctlx keymaps only if -Readline is starting out in emacs mode. - -
    term -
    -The term= form may be used to include terminal-specific -key bindings, perhaps to bind the key sequences output by the -terminal's function keys. The word on the right side of the -`=' is tested against both the full name of the terminal and -the portion of the terminal name before the first `-'. This -allows sun to match both sun and sun-cmd, -for instance. - -
    application -
    -The application construct is used to include -application-specific settings. Each program using the Readline -library sets the application name, and you can test for it. -This could be used to bind key sequences to functions useful for -a specific program. For instance, the following command adds a -key sequence that quotes the current or previous word in Bash: - -
    -$if Bash
-# Quote the current or previous word
-"\C-xq": "\eb\"\ef\""
-$endif
-
    - -
    - -
    $endif -
    -This command, as seen in the previous example, terminates an -$if command. - -
    $else -
    -Commands in this branch of the $if directive are executed if -the test fails. - -
    $include -
    -This directive takes a single filename as an argument and reads commands -and bindings from that file. - -
    -$include /etc/inputrc
-
    - -
    - - - -

    Sample Init File

    - -

    -Here is an example of an inputrc file. This illustrates key -binding, variable assignment, and conditional syntax. - -

    - -
    -# This file controls the behaviour of line input editing for
-# programs that use the Gnu Readline library.  Existing programs
-# include FTP, Bash, and Gdb.
-#
-# You can re-read the inputrc file with C-x C-r.
-# Lines beginning with '#' are comments.
-#
-# First, include any systemwide bindings and variable assignments from
-# /etc/Inputrc
-$include /etc/Inputrc
-
-#
-# Set various bindings for emacs mode.
-
-set editing-mode emacs 
-
-$if mode=emacs
-
-Meta-Control-h:	backward-kill-word	Text after the function name is ignored
-
-#
-# Arrow keys in keypad mode
-#
-#"\M-OD":        backward-char
-#"\M-OC":        forward-char
-#"\M-OA":        previous-history
-#"\M-OB":        next-history
-#
-# Arrow keys in ANSI mode
-#
-"\M-[D":        backward-char
-"\M-[C":        forward-char
-"\M-[A":        previous-history
-"\M-[B":        next-history
-#
-# Arrow keys in 8 bit keypad mode
-#
-#"\M-\C-OD":       backward-char
-#"\M-\C-OC":       forward-char
-#"\M-\C-OA":       previous-history
-#"\M-\C-OB":       next-history
-#
-# Arrow keys in 8 bit ANSI mode
-#
-#"\M-\C-[D":       backward-char
-#"\M-\C-[C":       forward-char
-#"\M-\C-[A":       previous-history
-#"\M-\C-[B":       next-history
-
-C-q: quoted-insert
-
-$endif
-
-# An old-style binding.  This happens to be the default.
-TAB: complete
-
-# Macros that are convenient for shell interaction
-$if Bash
-# edit the path
-"\C-xp": "PATH=${PATH}\e\C-e\C-a\ef\C-f"
-# prepare to type a quoted word -- insert open and close double quotes
-# and move to just after the open quote
-"\C-x\"": "\"\"\C-b"
-# insert a backslash (testing backslash escapes in sequences and macros)
-"\C-x\\": "\\"
-# Quote the current or previous word
-"\C-xq": "\eb\"\ef\""
-# Add a binding to refresh the line, which is unbound
-"\C-xr": redraw-current-line
-# Edit variable on current line.
-"\M-\C-v": "\C-a\C-k$\C-y\M-\C-e\C-a\C-y="
-$endif
-
-# use a visible bell if one is available
-set bell-style visible
-
-# don't strip characters to 7 bits when reading
-set input-meta on
-
-# allow iso-latin1 characters to be inserted rather than converted to
-# prefix-meta sequences
-set convert-meta off
-
-# display characters with the eighth bit set directly rather than
-# as meta-prefixed characters
-set output-meta on
-
-# if there are more than 150 possible completions for a word, ask the
-# user if he wants to see all of them
-set completion-query-items 150
-
-# For FTP
-$if Ftp
-"\C-xg": "get \M-?"
-"\C-xt": "put \M-?"
-"\M-.": yank-last-arg
-$endif
-
    - - - -

    Bindable Readline Commands

    - - - - -

    -This section describes Readline commands that may be bound to key -sequences. - -

    -

    -Command names without an accompanying key sequence are unbound by default. -In the following descriptions, point refers to the current cursor -position, and mark refers to a cursor position saved by the -set-mark command. -The text between the point and mark is referred to as the region. - -

    - - -

    Commands For Moving

    -
    - -
    beginning-of-line (C-a) -
    - -Move to the start of the current line. - -
    end-of-line (C-e) -
    - -Move to the end of the line. - -
    forward-char (C-f) -
    - -Move forward a character. - -
    backward-char (C-b) -
    - -Move back a character. - -
    forward-word (M-f) -
    - -Move forward to the end of the next word. Words are composed of -letters and digits. - -
    backward-word (M-b) -
    - -Move back to the start of the current or previous word. Words are -composed of letters and digits. - -
    clear-screen (C-l) -
    - -Clear the screen and redraw the current line, -leaving the current line at the top of the screen. - -
    redraw-current-line () -
    - -Refresh the current line. By default, this is unbound. - -
    - - - -

    Commands For Manipulating The History

    - -
    - -
    accept-line (Newline or Return) -
    - -Accept the line regardless of where the cursor is. -If this line is -non-empty, it may be added to the history list for future recall with -add_history(). -If this line is a modified history line, then restore the history line -to its original state. - -
    previous-history (C-p) -
    - -Move `up' through the history list. - -
    next-history (C-n) -
    - -Move `down' through the history list. - -
    beginning-of-history (M-<) -
    - -Move to the first line in the history. - -
    end-of-history (M->) -
    - -Move to the end of the input history, i.e., the line currently -being entered. - -
    reverse-search-history (C-r) -
    - -Search backward starting at the current line and moving `up' through -the history as necessary. This is an incremental search. - -
    forward-search-history (C-s) -
    - -Search forward starting at the current line and moving `down' through -the the history as necessary. This is an incremental search. - -
    non-incremental-reverse-search-history (M-p) -
    - -Search backward starting at the current line and moving `up' -through the history as necessary using a non-incremental search -for a string supplied by the user. - -
    non-incremental-forward-search-history (M-n) -
    - -Search forward starting at the current line and moving `down' -through the the history as necessary using a non-incremental search -for a string supplied by the user. - -
    history-search-forward () -
    - -Search forward through the history for the string of characters -between the start of the current line and the point. -This is a non-incremental search. -By default, this command is unbound. - -
    history-search-backward () -
    - -Search backward through the history for the string of characters -between the start of the current line and the point. This -is a non-incremental search. By default, this command is unbound. - -
    yank-nth-arg (M-C-y) -
    - -Insert the first argument to the previous command (usually -the second word on the previous line). With an argument n, -insert the nth word from the previous command (the words -in the previous command begin with word 0). A negative argument -inserts the nth word from the end of the previous command. - -
    yank-last-arg (M-. or M-_) -
    - -Insert last argument to the previous command (the last word of the -previous history entry). With an -argument, behave exactly like yank-nth-arg. -Successive calls to yank-last-arg move back through the history -list, inserting the last argument of each line in turn. - -
    - - - -

    Commands For Changing Text

    - -
    - -
    delete-char (C-d) -
    - -Delete the character under the cursor. If the cursor is at the -beginning of the line, there are no characters in the line, and -the last character typed was not bound to delete-char, then -return EOF. - -
    backward-delete-char (Rubout) -
    - -Delete the character behind the cursor. A numeric argument means -to kill the characters instead of deleting them. - -
    forward-backward-delete-char () -
    - -Delete the character under the cursor, unless the cursor is at the -end of the line, in which case the character behind the cursor is -deleted. By default, this is not bound to a key. - -
    quoted-insert (C-q or C-v) -
    - -Add the next character typed to the line verbatim. This is -how to insert key sequences like C-q, for example. - -
    tab-insert (M-TAB) -
    - -Insert a tab character. - -
    self-insert (a, b, A, 1, !, ...) -
    - -Insert yourself. - -
    transpose-chars (C-t) -
    - -Drag the character before the cursor forward over -the character at the cursor, moving the -cursor forward as well. If the insertion point -is at the end of the line, then this -transposes the last two characters of the line. -Negative arguments have no effect. - -
    transpose-words (M-t) -
    - -Drag the word before point past the word after point, -moving point past that word as well. - -
    upcase-word (M-u) -
    - -Uppercase the current (or following) word. With a negative argument, -uppercase the previous word, but do not move the cursor. - -
    downcase-word (M-l) -
    - -Lowercase the current (or following) word. With a negative argument, -lowercase the previous word, but do not move the cursor. - -
    capitalize-word (M-c) -
    - -Capitalize the current (or following) word. With a negative argument, -capitalize the previous word, but do not move the cursor. - -
    - - - -

    Killing And Yanking

    - -
    - -
    kill-line (C-k) -
    - -Kill the text from point to the end of the line. - -
    backward-kill-line (C-x Rubout) -
    - -Kill backward to the beginning of the line. - -
    unix-line-discard (C-u) -
    - -Kill backward from the cursor to the beginning of the current line. - -
    kill-whole-line () -
    - -Kill all characters on the current line, no matter point is. -By default, this is unbound. - -
    kill-word (M-d) -
    - -Kill from point to the end of the current word, or if between -words, to the end of the next word. -Word boundaries are the same as forward-word. - -
    backward-kill-word (M-DEL) -
    - -Kill the word behind point. -Word boundaries are the same as backward-word. - -
    unix-word-rubout (C-w) -
    - -Kill the word behind point, using white space as a word boundary. -The killed text is saved on the kill-ring. - -
    delete-horizontal-space () -
    - -Delete all spaces and tabs around point. By default, this is unbound. - -
    kill-region () -
    - -Kill the text in the current region. -By default, this command is unbound. - -
    copy-region-as-kill () -
    - -Copy the text in the region to the kill buffer, so it can be yanked -right away. By default, this command is unbound. - -
    copy-backward-word () -
    - -Copy the word before point to the kill buffer. -The word boundaries are the same as backward-word. -By default, this command is unbound. - -
    copy-forward-word () -
    - -Copy the word following point to the kill buffer. -The word boundaries are the same as forward-word. -By default, this command is unbound. - -
    yank (C-y) -
    - -Yank the top of the kill ring into the buffer at the current -cursor position. - -
    yank-pop (M-y) -
    - -Rotate the kill-ring, and yank the new top. You can only do this if -the prior command is yank or yank-pop. -
    - - - -

    Specifying Numeric Arguments

    -
    - -
    digit-argument (M-0, M-1, ... M--) -
    - -Add this digit to the argument already accumulating, or start a new -argument. M-- starts a negative argument. - -
    universal-argument () -
    - -This is another way to specify an argument. -If this command is followed by one or more digits, optionally with a -leading minus sign, those digits define the argument. -If the command is followed by digits, executing universal-argument -again ends the numeric argument, but is otherwise ignored. -As a special case, if this command is immediately followed by a -character that is neither a digit or minus sign, the argument count -for the next command is multiplied by four. -The argument count is initially one, so executing this function the -first time makes the argument count four, a second time makes the -argument count sixteen, and so on. -By default, this is not bound to a key. -
    - - - -

    Letting Readline Type For You

    - -
    - -
    complete (TAB) -
    - -Attempt to perform completion on the text before point. -The actual completion performed is application-specific. -The default is filename completion. - -
    possible-completions (M-?) -
    - -List the possible completions of the text before the cursor. - -
    insert-completions (M-*) -
    - -Insert all completions of the text before point that would have -been generated by possible-completions. - -
    menu-complete () -
    - -Similar to complete, but replaces the word to be completed -with a single match from the list of possible completions. -Repeated execution of menu-complete steps through the list -of possible completions, inserting each match in turn. -At the end of the list of completions, the bell is rung and the -original text is restored. -An argument of n moves n positions forward in the list -of matches; a negative argument may be used to move backward -through the list. -This command is intended to be bound to TAB, but is unbound -by default. - -
    delete-char-or-list () -
    - -Deletes the character under the cursor if not at the beginning or -end of the line (like delete-char). -If at the end of the line, behaves identically to -possible-completions. -This command is unbound by default. - -
    - - - -

    Keyboard Macros

    -
    - -
    start-kbd-macro (C-x () -
    - -Begin saving the characters typed into the current keyboard macro. - -
    end-kbd-macro (C-x )) -
    - -Stop saving the characters typed into the current keyboard macro -and save the definition. - -
    call-last-kbd-macro (C-x e) -
    - -Re-execute the last keyboard macro defined, by making the characters -in the macro appear as if typed at the keyboard. - -
    - - - -

    Some Miscellaneous Commands

    -
    - -
    re-read-init-file (C-x C-r) -
    - -Read in the contents of the inputrc file, and incorporate -any bindings or variable assignments found there. - -
    abort (C-g) -
    - -Abort the current editing command and -ring the terminal's bell (subject to the setting of -bell-style). - -
    do-uppercase-version (M-a, M-b, M-x, ...) -
    - -If the metafied character x is lowercase, run the command -that is bound to the corresponding uppercase character. - -
    prefix-meta (ESC) -
    - -Make the next character typed be metafied. This is for keyboards -without a meta key. Typing `ESC f' is equivalent to typing -M-f. - -
    undo (C-_ or C-x C-u) -
    - -Incremental undo, separately remembered for each line. - -
    revert-line (M-r) -
    - -Undo all changes made to this line. This is like executing the undo -command enough times to get back to the beginning. - -
    tilde-expand (M-~) -
    - -Perform tilde expansion on the current word. - -
    set-mark (C-@) -
    - -Set the mark to the current point. If a -numeric argument is supplied, the mark is set to that position. - -
    exchange-point-and-mark (C-x C-x) -
    - -Swap the point with the mark. The current cursor position is set to -the saved position, and the old cursor position is saved as the mark. - -
    character-search (C-]) -
    - -A character is read and point is moved to the next occurrence of that -character. A negative count searches for previous occurrences. - -
    character-search-backward (M-C-]) -
    - -A character is read and point is moved to the previous occurrence -of that character. A negative count searches for subsequent -occurrences. - -
    insert-comment (M-#) -
    - -The value of the comment-begin -variable is inserted at the beginning of the current line, -and the line is accepted as if a newline had been typed. - -
    dump-functions () -
    - -Print all of the functions and their key bindings to the -Readline output stream. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an inputrc file. This command is unbound by default. - -
    dump-variables () -
    - -Print all of the settable variables and their values to the -Readline output stream. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an inputrc file. This command is unbound by default. - -
    dump-macros () -
    - -Print all of the Readline key sequences bound to macros and the -strings they output. If a numeric argument is supplied, -the output is formatted in such a way that it can be made part -of an inputrc file. This command is unbound by default. - -
    - - - -

    Readline vi Mode

    - -

    -While the Readline library does not have a full set of vi -editing functions, it does contain enough to allow simple editing -of the line. The Readline vi mode behaves as specified in -the POSIX 1003.2 standard. - -

    -

    -In order to switch interactively between emacs and vi -editing modes, use the command M-C-j (toggle-editing-mode). -The Readline default is emacs mode. - -

    -

    -When you enter a line in vi mode, you are already placed in -`insertion' mode, as if you had typed an `i'. Pressing ESC -switches you into `command' mode, where you can edit the text of the -line with the standard vi movement keys, move to previous -history lines with `k' and subsequent lines with `j', and -so forth. - -

    - -

    -This document was generated on 5 Febuary 2001 using the -texi2html -translator version 1.52.

    - - diff --git a/readline/doc/rluserman.info b/readline/doc/rluserman.info deleted file mode 100644 --- a/readline/doc/rluserman.info +++ /dev/null @@ -1,1194 +0,0 @@ -This is rluserman.info, produced by makeinfo version 4.0 from -/usr/homes/chet/src/bash/readline-src/doc/rluserman.texinfo. - -INFO-DIR-SECTION Libraries -START-INFO-DIR-ENTRY -* RLuserman: (rluserman). The GNU readline library User's Manual. -END-INFO-DIR-ENTRY - - This document describes the end user interface of the GNU Readline -Library, a utility which aids in the consistency of user interface -across discrete programs that need to provide a command line interface. - - Copyright (C) 1988-2001 Free Software Foundation, Inc. - - Permission is granted to make and distribute verbatim copies of this -manual provided the copyright notice and this permission notice pare -preserved on all copies. - - Permission is granted to copy and distribute modified versions of -this manual under the conditions for verbatim copying, provided that -the entire resulting derived work is distributed under the terms of a -permission notice identical to this one. - - Permission is granted to copy and distribute translations of this -manual into another language, under the above conditions for modified -versions, except that this permission notice may be stated in a -translation approved by the Free Software Foundation. - - -File: rluserman.info, Node: Top, Next: Command Line Editing, Up: (dir) - -GNU Readline Library -******************** - - This document describes the end user interface of the GNU Readline -Library, a utility which aids in the consistency of user interface -across discrete programs that need to provide a command line interface. - -* Menu: - -* Command Line Editing:: GNU Readline User's Manual. - - -File: rluserman.info, Node: Command Line Editing, Prev: Top, Up: Top - -Command Line Editing -******************** - - This chapter describes the basic features of the GNU command line -editing interface. - -* Menu: - -* Introduction and Notation:: Notation used in this text. -* Readline Interaction:: The minimum set of commands for editing a line. -* Readline Init File:: Customizing Readline from a user's view. -* Bindable Readline Commands:: A description of most of the Readline commands - available for binding -* Readline vi Mode:: A short description of how to make Readline - behave like the vi editor. - - -File: rluserman.info, Node: Introduction and Notation, Next: Readline Interaction, Up: Command Line Editing - -Introduction to Line Editing -============================ - - The following paragraphs describe the notation used to represent -keystrokes. - - The text `C-k' is read as `Control-K' and describes the character -produced when the key is pressed while the Control key is depressed. - - The text `M-k' is read as `Meta-K' and describes the character -produced when the Meta key (if you have one) is depressed, and the -key is pressed. The Meta key is labeled on many keyboards. On -keyboards with two keys labeled (usually to either side of the -space bar), the on the left side is generally set to work as a -Meta key. The key on the right may also be configured to work as -a Meta key or may be configured as some other modifier, such as a -Compose key for typing accented characters. - - If you do not have a Meta or key, or another key working as a -Meta key, the identical keystroke can be generated by typing -_first_, and then typing . Either process is known as "metafying" -the key. - - The text `M-C-k' is read as `Meta-Control-k' and describes the -character produced by "metafying" `C-k'. - - In addition, several keys have their own names. Specifically, -, , , , , and all stand for themselves -when seen in this text, or in an init file (*note Readline Init File::). -If your keyboard lacks a key, typing will produce the -desired character. The key may be labeled or on -some keyboards. - - -File: rluserman.info, Node: Readline Interaction, Next: Readline Init File, Prev: Introduction and Notation, Up: Command Line Editing - -Readline Interaction -==================== - - Often during an interactive session you type in a long line of text, -only to notice that the first word on the line is misspelled. The -Readline library gives you a set of commands for manipulating the text -as you type it in, allowing you to just fix your typo, and not forcing -you to retype the majority of the line. Using these editing commands, -you move the cursor to the place that needs correction, and delete or -insert the text of the corrections. Then, when you are satisfied with -the line, you simply press . You do not have to be at the end of -the line to press ; the entire line is accepted regardless of the -location of the cursor within the line. - -* Menu: - -* Readline Bare Essentials:: The least you need to know about Readline. -* Readline Movement Commands:: Moving about the input line. -* Readline Killing Commands:: How to delete text, and how to get it back! -* Readline Arguments:: Giving numeric arguments to commands. -* Searching:: Searching through previous lines. - - -File: rluserman.info, Node: Readline Bare Essentials, Next: Readline Movement Commands, Up: Readline Interaction - -Readline Bare Essentials ------------------------- - - In order to enter characters into the line, simply type them. The -typed character appears where the cursor was, and then the cursor moves -one space to the right. If you mistype a character, you can use your -erase character to back up and delete the mistyped character. - - Sometimes you may mistype a character, and not notice the error -until you have typed several other characters. In that case, you can -type `C-b' to move the cursor to the left, and then correct your -mistake. Afterwards, you can move the cursor to the right with `C-f'. - - When you add text in the middle of a line, you will notice that -characters to the right of the cursor are `pushed over' to make room -for the text that you have inserted. Likewise, when you delete text -behind the cursor, characters to the right of the cursor are `pulled -back' to fill in the blank space created by the removal of the text. A -list of the bare essentials for editing the text of an input line -follows. - -`C-b' - Move back one character. - -`C-f' - Move forward one character. - - or - Delete the character to the left of the cursor. - -`C-d' - Delete the character underneath the cursor. - -Printing characters - Insert the character into the line at the cursor. - -`C-_' or `C-x C-u' - Undo the last editing command. You can undo all the way back to an - empty line. - -(Depending on your configuration, the key be set to delete -the character to the left of the cursor and the key set to delete -the character underneath the cursor, like `C-d', rather than the -character to the left of the cursor.) - - -File: rluserman.info, Node: Readline Movement Commands, Next: Readline Killing Commands, Prev: Readline Bare Essentials, Up: Readline Interaction - -Readline Movement Commands --------------------------- - - The above table describes the most basic keystrokes that you need in -order to do editing of the input line. For your convenience, many -other commands have been added in addition to `C-b', `C-f', `C-d', and -. Here are some commands for moving more rapidly about the line. - -`C-a' - Move to the start of the line. - -`C-e' - Move to the end of the line. - -`M-f' - Move forward a word, where a word is composed of letters and - digits. - -`M-b' - Move backward a word. - -`C-l' - Clear the screen, reprinting the current line at the top. - - Notice how `C-f' moves forward a character, while `M-f' moves -forward a word. It is a loose convention that control keystrokes -operate on characters while meta keystrokes operate on words. - - -File: rluserman.info, Node: Readline Killing Commands, Next: Readline Arguments, Prev: Readline Movement Commands, Up: Readline Interaction - -Readline Killing Commands -------------------------- - - "Killing" text means to delete the text from the line, but to save -it away for later use, usually by "yanking" (re-inserting) it back into -the line. (`Cut' and `paste' are more recent jargon for `kill' and -`yank'.) - - If the description for a command says that it `kills' text, then you -can be sure that you can get the text back in a different (or the same) -place later. - - When you use a kill command, the text is saved in a "kill-ring". -Any number of consecutive kills save all of the killed text together, so -that when you yank it back, you get it all. The kill ring is not line -specific; the text that you killed on a previously typed line is -available to be yanked back later, when you are typing another line. - - Here is the list of commands for killing text. - -`C-k' - Kill the text from the current cursor position to the end of the - line. - -`M-d' - Kill from the cursor to the end of the current word, or, if between - words, to the end of the next word. Word boundaries are the same - as those used by `M-f'. - -`M-' - Kill from the cursor the start of the previous word, or, if between - words, to the start of the previous word. Word boundaries are the - same as those used by `M-b'. - -`C-w' - Kill from the cursor to the previous whitespace. This is - different than `M-' because the word boundaries differ. - - Here is how to "yank" the text back into the line. Yanking means to -copy the most-recently-killed text from the kill buffer. - -`C-y' - Yank the most recently killed text back into the buffer at the - cursor. - -`M-y' - Rotate the kill-ring, and yank the new top. You can only do this - if the prior command is `C-y' or `M-y'. - - -File: rluserman.info, Node: Readline Arguments, Next: Searching, Prev: Readline Killing Commands, Up: Readline Interaction - -Readline Arguments ------------------- - - You can pass numeric arguments to Readline commands. Sometimes the -argument acts as a repeat count, other times it is the sign of the -argument that is significant. If you pass a negative argument to a -command which normally acts in a forward direction, that command will -act in a backward direction. For example, to kill text back to the -start of the line, you might type `M-- C-k'. - - The general way to pass numeric arguments to a command is to type -meta digits before the command. If the first `digit' typed is a minus -sign (`-'), then the sign of the argument will be negative. Once you -have typed one meta digit to get the argument started, you can type the -remainder of the digits, and then the command. For example, to give -the `C-d' command an argument of 10, you could type `M-1 0 C-d', which -will delete the next ten characters on the input line. - - -File: rluserman.info, Node: Searching, Prev: Readline Arguments, Up: Readline Interaction - -Searching for Commands in the History -------------------------------------- - - Readline provides commands for searching through the command history -for lines containing a specified string. There are two search modes: -"incremental" and "non-incremental". - - Incremental searches begin before the user has finished typing the -search string. As each character of the search string is typed, -Readline displays the next entry from the history matching the string -typed so far. An incremental search requires only as many characters -as needed to find the desired history entry. To search backward in the -history for a particular string, type `C-r'. Typing `C-s' searches -forward through the history. The characters present in the value of -the `isearch-terminators' variable are used to terminate an incremental -search. If that variable has not been assigned a value, the and -`C-J' characters will terminate an incremental search. `C-g' will -abort an incremental search and restore the original line. When the -search is terminated, the history entry containing the search string -becomes the current line. - - To find other matching entries in the history list, type `C-r' or -`C-s' as appropriate. This will search backward or forward in the -history for the next entry matching the search string typed so far. -Any other key sequence bound to a Readline command will terminate the -search and execute that command. For instance, a will terminate -the search and accept the line, thereby executing the command from the -history list. A movement command will terminate the search, make the -last line found the current line, and begin editing. - - Non-incremental searches read the entire search string before -starting to search for matching history lines. The search string may be -typed by the user or be part of the contents of the current line. - - -File: rluserman.info, Node: Readline Init File, Next: Bindable Readline Commands, Prev: Readline Interaction, Up: Command Line Editing - -Readline Init File -================== - - Although the Readline library comes with a set of Emacs-like -keybindings installed by default, it is possible to use a different set -of keybindings. Any user can customize programs that use Readline by -putting commands in an "inputrc" file, conventionally in his home -directory. The name of this file is taken from the value of the -environment variable `INPUTRC'. If that variable is unset, the default -is `~/.inputrc'. - - When a program which uses the Readline library starts up, the init -file is read, and the key bindings are set. - - In addition, the `C-x C-r' command re-reads this init file, thus -incorporating any changes that you might have made to it. - -* Menu: - -* Readline Init File Syntax:: Syntax for the commands in the inputrc file. - -* Conditional Init Constructs:: Conditional key bindings in the inputrc file. - -* Sample Init File:: An example inputrc file. - - -File: rluserman.info, Node: Readline Init File Syntax, Next: Conditional Init Constructs, Up: Readline Init File - -Readline Init File Syntax -------------------------- - - There are only a few basic constructs allowed in the Readline init -file. Blank lines are ignored. Lines beginning with a `#' are -comments. Lines beginning with a `$' indicate conditional constructs -(*note Conditional Init Constructs::). Other lines denote variable -settings and key bindings. - -Variable Settings - You can modify the run-time behavior of Readline by altering the - values of variables in Readline using the `set' command within the - init file. Here is how to change from the default Emacs-like key - binding to use `vi' line editing commands: - - set editing-mode vi - - A great deal of run-time behavior is changeable with the following - variables. - - `bell-style' - Controls what happens when Readline wants to ring the - terminal bell. If set to `none', Readline never rings the - bell. If set to `visible', Readline uses a visible bell if - one is available. If set to `audible' (the default), - Readline attempts to ring the terminal's bell. - - `comment-begin' - The string to insert at the beginning of the line when the - `insert-comment' command is executed. The default value is - `"#"'. - - `completion-ignore-case' - If set to `on', Readline performs filename matching and - completion in a case-insensitive fashion. The default value - is `off'. - - `completion-query-items' - The number of possible completions that determines when the - user is asked whether he wants to see the list of - possibilities. If the number of possible completions is - greater than this value, Readline will ask the user whether - or not he wishes to view them; otherwise, they are simply - listed. This variable must be set to an integer value - greater than or equal to 0. The default limit is `100'. - - `convert-meta' - If set to `on', Readline will convert characters with the - eighth bit set to an ASCII key sequence by stripping the - eighth bit and prefixing an character, converting them - to a meta-prefixed key sequence. The default value is `on'. - - `disable-completion' - If set to `On', Readline will inhibit word completion. - Completion characters will be inserted into the line as if - they had been mapped to `self-insert'. The default is `off'. - - `editing-mode' - The `editing-mode' variable controls which default set of key - bindings is used. By default, Readline starts up in Emacs - editing mode, where the keystrokes are most similar to Emacs. - This variable can be set to either `emacs' or `vi'. - - `enable-keypad' - When set to `on', Readline will try to enable the application - keypad when it is called. Some systems need this to enable - the arrow keys. The default is `off'. - - `expand-tilde' - If set to `on', tilde expansion is performed when Readline - attempts word completion. The default is `off'. - - `horizontal-scroll-mode' - This variable can be set to either `on' or `off'. Setting it - to `on' means that the text of the lines being edited will - scroll horizontally on a single screen line when they are - longer than the width of the screen, instead of wrapping onto - a new screen line. By default, this variable is set to `off'. - - `input-meta' - If set to `on', Readline will enable eight-bit input (it will - not clear the eighth bit in the characters it reads), - regardless of what the terminal claims it can support. The - default value is `off'. The name `meta-flag' is a synonym - for this variable. - - `isearch-terminators' - The string of characters that should terminate an incremental - search without subsequently executing the character as a - command (*note Searching::). If this variable has not been - given a value, the characters and `C-J' will terminate - an incremental search. - - `keymap' - Sets Readline's idea of the current keymap for key binding - commands. Acceptable `keymap' names are `emacs', - `emacs-standard', `emacs-meta', `emacs-ctlx', `vi', `vi-move', - `vi-command', and `vi-insert'. `vi' is equivalent to - `vi-command'; `emacs' is equivalent to `emacs-standard'. The - default value is `emacs'. The value of the `editing-mode' - variable also affects the default keymap. - - `mark-directories' - If set to `on', completed directory names have a slash - appended. The default is `on'. - - `mark-modified-lines' - This variable, when set to `on', causes Readline to display an - asterisk (`*') at the start of history lines which have been - modified. This variable is `off' by default. - - `output-meta' - If set to `on', Readline will display characters with the - eighth bit set directly rather than as a meta-prefixed escape - sequence. The default is `off'. - - `print-completions-horizontally' - If set to `on', Readline will display completions with matches - sorted horizontally in alphabetical order, rather than down - the screen. The default is `off'. - - `show-all-if-ambiguous' - This alters the default behavior of the completion functions. - If set to `on', words which have more than one possible - completion cause the matches to be listed immediately instead - of ringing the bell. The default value is `off'. - - `visible-stats' - If set to `on', a character denoting a file's type is - appended to the filename when listing possible completions. - The default is `off'. - -Key Bindings - The syntax for controlling key bindings in the init file is - simple. First you need to find the name of the command that you - want to change. The following sections contain tables of the - command name, the default keybinding, if any, and a short - description of what the command does. - - Once you know the name of the command, simply place on a line in - the init file the name of the key you wish to bind the command to, - a colon, and then the name of the command. The name of the key - can be expressed in different ways, depending on what you find most - comfortable. - - KEYNAME: FUNCTION-NAME or MACRO - KEYNAME is the name of a key spelled out in English. For - example: - Control-u: universal-argument - Meta-Rubout: backward-kill-word - Control-o: "> output" - - In the above example, `C-u' is bound to the function - `universal-argument', `M-DEL' is bound to the function - `backward-kill-word', and `C-o' is bound to run the macro - expressed on the right hand side (that is, to insert the text - `> output' into the line). - - A number of symbolic character names are recognized while - processing this key binding syntax: DEL, ESC, ESCAPE, LFD, - NEWLINE, RET, RETURN, RUBOUT, SPACE, SPC, and TAB. - - "KEYSEQ": FUNCTION-NAME or MACRO - KEYSEQ differs from KEYNAME above in that strings denoting an - entire key sequence can be specified, by placing the key - sequence in double quotes. Some GNU Emacs style key escapes - can be used, as in the following example, but the special - character names are not recognized. - - "\C-u": universal-argument - "\C-x\C-r": re-read-init-file - "\e[11~": "Function Key 1" - - In the above example, `C-u' is again bound to the function - `universal-argument' (just as it was in the first example), - `C-x C-r' is bound to the function `re-read-init-file', and - ` <[> <1> <1> <~>' is bound to insert the text `Function - Key 1'. - - The following GNU Emacs style escape sequences are available when - specifying key sequences: - - `\C-' - control prefix - - `\M-' - meta prefix - - `\e' - an escape character - - `\\' - backslash - - `\"' - <">, a double quotation mark - - `\'' - <'>, a single quote or apostrophe - - In addition to the GNU Emacs style escape sequences, a second set - of backslash escapes is available: - - `\a' - alert (bell) - - `\b' - backspace - - `\d' - delete - - `\f' - form feed - - `\n' - newline - - `\r' - carriage return - - `\t' - horizontal tab - - `\v' - vertical tab - - `\NNN' - the character whose ASCII code is the octal value NNN (one to - three digits) - - `\xNNN' - the character whose ASCII code is the hexadecimal value NNN - (one to three digits) - - When entering the text of a macro, single or double quotes must be - used to indicate a macro definition. Unquoted text is assumed to - be a function name. In the macro body, the backslash escapes - described above are expanded. Backslash will quote any other - character in the macro text, including `"' and `''. For example, - the following binding will make `C-x \' insert a single `\' into - the line: - "\C-x\\": "\\" - - -File: rluserman.info, Node: Conditional Init Constructs, Next: Sample Init File, Prev: Readline Init File Syntax, Up: Readline Init File - -Conditional Init Constructs ---------------------------- - - Readline implements a facility similar in spirit to the conditional -compilation features of the C preprocessor which allows key bindings -and variable settings to be performed as the result of tests. There -are four parser directives used. - -`$if' - The `$if' construct allows bindings to be made based on the - editing mode, the terminal being used, or the application using - Readline. The text of the test extends to the end of the line; no - characters are required to isolate it. - - `mode' - The `mode=' form of the `$if' directive is used to test - whether Readline is in `emacs' or `vi' mode. This may be - used in conjunction with the `set keymap' command, for - instance, to set bindings in the `emacs-standard' and - `emacs-ctlx' keymaps only if Readline is starting out in - `emacs' mode. - - `term' - The `term=' form may be used to include terminal-specific key - bindings, perhaps to bind the key sequences output by the - terminal's function keys. The word on the right side of the - `=' is tested against both the full name of the terminal and - the portion of the terminal name before the first `-'. This - allows `sun' to match both `sun' and `sun-cmd', for instance. - - `application' - The APPLICATION construct is used to include - application-specific settings. Each program using the - Readline library sets the APPLICATION NAME, and you can test - for it. This could be used to bind key sequences to - functions useful for a specific program. For instance, the - following command adds a key sequence that quotes the current - or previous word in Bash: - $if Bash - # Quote the current or previous word - "\C-xq": "\eb\"\ef\"" - $endif - -`$endif' - This command, as seen in the previous example, terminates an `$if' - command. - -`$else' - Commands in this branch of the `$if' directive are executed if the - test fails. - -`$include' - This directive takes a single filename as an argument and reads - commands and bindings from that file. - $include /etc/inputrc - - -File: rluserman.info, Node: Sample Init File, Prev: Conditional Init Constructs, Up: Readline Init File - -Sample Init File ----------------- - - Here is an example of an INPUTRC file. This illustrates key -binding, variable assignment, and conditional syntax. - - - # This file controls the behaviour of line input editing for - # programs that use the Gnu Readline library. Existing programs - # include FTP, Bash, and Gdb. - # - # You can re-read the inputrc file with C-x C-r. - # Lines beginning with '#' are comments. - # - # First, include any systemwide bindings and variable assignments from - # /etc/Inputrc - $include /etc/Inputrc - - # - # Set various bindings for emacs mode. - - set editing-mode emacs - - $if mode=emacs - - Meta-Control-h: backward-kill-word Text after the function name is ignored - - # - # Arrow keys in keypad mode - # - #"\M-OD": backward-char - #"\M-OC": forward-char - #"\M-OA": previous-history - #"\M-OB": next-history - # - # Arrow keys in ANSI mode - # - "\M-[D": backward-char - "\M-[C": forward-char - "\M-[A": previous-history - "\M-[B": next-history - # - # Arrow keys in 8 bit keypad mode - # - #"\M-\C-OD": backward-char - #"\M-\C-OC": forward-char - #"\M-\C-OA": previous-history - #"\M-\C-OB": next-history - # - # Arrow keys in 8 bit ANSI mode - # - #"\M-\C-[D": backward-char - #"\M-\C-[C": forward-char - #"\M-\C-[A": previous-history - #"\M-\C-[B": next-history - - C-q: quoted-insert - - $endif - - # An old-style binding. This happens to be the default. - TAB: complete - - # Macros that are convenient for shell interaction - $if Bash - # edit the path - "\C-xp": "PATH=${PATH}\e\C-e\C-a\ef\C-f" - # prepare to type a quoted word -- insert open and close double quotes - # and move to just after the open quote - "\C-x\"": "\"\"\C-b" - # insert a backslash (testing backslash escapes in sequences and macros) - "\C-x\\": "\\" - # Quote the current or previous word - "\C-xq": "\eb\"\ef\"" - # Add a binding to refresh the line, which is unbound - "\C-xr": redraw-current-line - # Edit variable on current line. - "\M-\C-v": "\C-a\C-k$\C-y\M-\C-e\C-a\C-y=" - $endif - - # use a visible bell if one is available - set bell-style visible - - # don't strip characters to 7 bits when reading - set input-meta on - - # allow iso-latin1 characters to be inserted rather than converted to - # prefix-meta sequences - set convert-meta off - - # display characters with the eighth bit set directly rather than - # as meta-prefixed characters - set output-meta on - - # if there are more than 150 possible completions for a word, ask the - # user if he wants to see all of them - set completion-query-items 150 - - # For FTP - $if Ftp - "\C-xg": "get \M-?" - "\C-xt": "put \M-?" - "\M-.": yank-last-arg - $endif - - -File: rluserman.info, Node: Bindable Readline Commands, Next: Readline vi Mode, Prev: Readline Init File, Up: Command Line Editing - -Bindable Readline Commands -========================== - -* Menu: - -* Commands For Moving:: Moving about the line. -* Commands For History:: Getting at previous lines. -* Commands For Text:: Commands for changing text. -* Commands For Killing:: Commands for killing and yanking. -* Numeric Arguments:: Specifying numeric arguments, repeat counts. -* Commands For Completion:: Getting Readline to do the typing for you. -* Keyboard Macros:: Saving and re-executing typed characters -* Miscellaneous Commands:: Other miscellaneous commands. - - This section describes Readline commands that may be bound to key -sequences. - - Command names without an accompanying key sequence are unbound by -default. In the following descriptions, "point" refers to the current -cursor position, and "mark" refers to a cursor position saved by the -`set-mark' command. The text between the point and mark is referred to -as the "region". - - -File: rluserman.info, Node: Commands For Moving, Next: Commands For History, Up: Bindable Readline Commands - -Commands For Moving -------------------- - -`beginning-of-line (C-a)' - Move to the start of the current line. - -`end-of-line (C-e)' - Move to the end of the line. - -`forward-char (C-f)' - Move forward a character. - -`backward-char (C-b)' - Move back a character. - -`forward-word (M-f)' - Move forward to the end of the next word. Words are composed of - letters and digits. - -`backward-word (M-b)' - Move back to the start of the current or previous word. Words are - composed of letters and digits. - -`clear-screen (C-l)' - Clear the screen and redraw the current line, leaving the current - line at the top of the screen. - -`redraw-current-line ()' - Refresh the current line. By default, this is unbound. - - -File: rluserman.info, Node: Commands For History, Next: Commands For Text, Prev: Commands For Moving, Up: Bindable Readline Commands - -Commands For Manipulating The History -------------------------------------- - -`accept-line (Newline or Return)' - Accept the line regardless of where the cursor is. If this line is - non-empty, it may be added to the history list for future recall - with `add_history()'. If this line is a modified history line, - then restore the history line to its original state. - -`previous-history (C-p)' - Move `up' through the history list. - -`next-history (C-n)' - Move `down' through the history list. - -`beginning-of-history (M-<)' - Move to the first line in the history. - -`end-of-history (M->)' - Move to the end of the input history, i.e., the line currently - being entered. - -`reverse-search-history (C-r)' - Search backward starting at the current line and moving `up' - through the history as necessary. This is an incremental search. - -`forward-search-history (C-s)' - Search forward starting at the current line and moving `down' - through the the history as necessary. This is an incremental - search. - -`non-incremental-reverse-search-history (M-p)' - Search backward starting at the current line and moving `up' - through the history as necessary using a non-incremental search - for a string supplied by the user. - -`non-incremental-forward-search-history (M-n)' - Search forward starting at the current line and moving `down' - through the the history as necessary using a non-incremental search - for a string supplied by the user. - -`history-search-forward ()' - Search forward through the history for the string of characters - between the start of the current line and the point. This is a - non-incremental search. By default, this command is unbound. - -`history-search-backward ()' - Search backward through the history for the string of characters - between the start of the current line and the point. This is a - non-incremental search. By default, this command is unbound. - -`yank-nth-arg (M-C-y)' - Insert the first argument to the previous command (usually the - second word on the previous line). With an argument N, insert the - Nth word from the previous command (the words in the previous - command begin with word 0). A negative argument inserts the Nth - word from the end of the previous command. - -`yank-last-arg (M-. or M-_)' - Insert last argument to the previous command (the last word of the - previous history entry). With an argument, behave exactly like - `yank-nth-arg'. Successive calls to `yank-last-arg' move back - through the history list, inserting the last argument of each line - in turn. - - -File: rluserman.info, Node: Commands For Text, Next: Commands For Killing, Prev: Commands For History, Up: Bindable Readline Commands - -Commands For Changing Text --------------------------- - -`delete-char (C-d)' - Delete the character under the cursor. If the cursor is at the - beginning of the line, there are no characters in the line, and - the last character typed was not bound to `delete-char', then - return EOF. - -`backward-delete-char (Rubout)' - Delete the character behind the cursor. A numeric argument means - to kill the characters instead of deleting them. - -`forward-backward-delete-char ()' - Delete the character under the cursor, unless the cursor is at the - end of the line, in which case the character behind the cursor is - deleted. By default, this is not bound to a key. - -`quoted-insert (C-q or C-v)' - Add the next character typed to the line verbatim. This is how to - insert key sequences like `C-q', for example. - -`tab-insert (M-)' - Insert a tab character. - -`self-insert (a, b, A, 1, !, ...)' - Insert yourself. - -`transpose-chars (C-t)' - Drag the character before the cursor forward over the character at - the cursor, moving the cursor forward as well. If the insertion - point is at the end of the line, then this transposes the last two - characters of the line. Negative arguments have no effect. - -`transpose-words (M-t)' - Drag the word before point past the word after point, moving point - past that word as well. - -`upcase-word (M-u)' - Uppercase the current (or following) word. With a negative - argument, uppercase the previous word, but do not move the cursor. - -`downcase-word (M-l)' - Lowercase the current (or following) word. With a negative - argument, lowercase the previous word, but do not move the cursor. - -`capitalize-word (M-c)' - Capitalize the current (or following) word. With a negative - argument, capitalize the previous word, but do not move the cursor. - - -File: rluserman.info, Node: Commands For Killing, Next: Numeric Arguments, Prev: Commands For Text, Up: Bindable Readline Commands - -Killing And Yanking -------------------- - -`kill-line (C-k)' - Kill the text from point to the end of the line. - -`backward-kill-line (C-x Rubout)' - Kill backward to the beginning of the line. - -`unix-line-discard (C-u)' - Kill backward from the cursor to the beginning of the current line. - -`kill-whole-line ()' - Kill all characters on the current line, no matter point is. By - default, this is unbound. - -`kill-word (M-d)' - Kill from point to the end of the current word, or if between - words, to the end of the next word. Word boundaries are the same - as `forward-word'. - -`backward-kill-word (M-)' - Kill the word behind point. Word boundaries are the same as - `backward-word'. - -`unix-word-rubout (C-w)' - Kill the word behind point, using white space as a word boundary. - The killed text is saved on the kill-ring. - -`delete-horizontal-space ()' - Delete all spaces and tabs around point. By default, this is - unbound. - -`kill-region ()' - Kill the text in the current region. By default, this command is - unbound. - -`copy-region-as-kill ()' - Copy the text in the region to the kill buffer, so it can be yanked - right away. By default, this command is unbound. - -`copy-backward-word ()' - Copy the word before point to the kill buffer. The word - boundaries are the same as `backward-word'. By default, this - command is unbound. - -`copy-forward-word ()' - Copy the word following point to the kill buffer. The word - boundaries are the same as `forward-word'. By default, this - command is unbound. - -`yank (C-y)' - Yank the top of the kill ring into the buffer at the current - cursor position. - -`yank-pop (M-y)' - Rotate the kill-ring, and yank the new top. You can only do this - if the prior command is `yank' or `yank-pop'. - - -File: rluserman.info, Node: Numeric Arguments, Next: Commands For Completion, Prev: Commands For Killing, Up: Bindable Readline Commands - -Specifying Numeric Arguments ----------------------------- - -`digit-argument (M-0, M-1, ... M--)' - Add this digit to the argument already accumulating, or start a new - argument. `M--' starts a negative argument. - -`universal-argument ()' - This is another way to specify an argument. If this command is - followed by one or more digits, optionally with a leading minus - sign, those digits define the argument. If the command is - followed by digits, executing `universal-argument' again ends the - numeric argument, but is otherwise ignored. As a special case, if - this command is immediately followed by a character that is - neither a digit or minus sign, the argument count for the next - command is multiplied by four. The argument count is initially - one, so executing this function the first time makes the argument - count four, a second time makes the argument count sixteen, and so - on. By default, this is not bound to a key. - - -File: rluserman.info, Node: Commands For Completion, Next: Keyboard Macros, Prev: Numeric Arguments, Up: Bindable Readline Commands - -Letting Readline Type For You ------------------------------ - -`complete ()' - Attempt to perform completion on the text before point. The - actual completion performed is application-specific. The default - is filename completion. - -`possible-completions (M-?)' - List the possible completions of the text before the cursor. - -`insert-completions (M-*)' - Insert all completions of the text before point that would have - been generated by `possible-completions'. - -`menu-complete ()' - Similar to `complete', but replaces the word to be completed with - a single match from the list of possible completions. Repeated - execution of `menu-complete' steps through the list of possible - completions, inserting each match in turn. At the end of the list - of completions, the bell is rung and the original text is restored. - An argument of N moves N positions forward in the list of matches; - a negative argument may be used to move backward through the list. - This command is intended to be bound to , but is unbound by - default. - -`delete-char-or-list ()' - Deletes the character under the cursor if not at the beginning or - end of the line (like `delete-char'). If at the end of the line, - behaves identically to `possible-completions'. This command is - unbound by default. - - -File: rluserman.info, Node: Keyboard Macros, Next: Miscellaneous Commands, Prev: Commands For Completion, Up: Bindable Readline Commands - -Keyboard Macros ---------------- - -`start-kbd-macro (C-x ()' - Begin saving the characters typed into the current keyboard macro. - -`end-kbd-macro (C-x ))' - Stop saving the characters typed into the current keyboard macro - and save the definition. - -`call-last-kbd-macro (C-x e)' - Re-execute the last keyboard macro defined, by making the - characters in the macro appear as if typed at the keyboard. - - -File: rluserman.info, Node: Miscellaneous Commands, Prev: Keyboard Macros, Up: Bindable Readline Commands - -Some Miscellaneous Commands ---------------------------- - -`re-read-init-file (C-x C-r)' - Read in the contents of the INPUTRC file, and incorporate any - bindings or variable assignments found there. - -`abort (C-g)' - Abort the current editing command and ring the terminal's bell - (subject to the setting of `bell-style'). - -`do-uppercase-version (M-a, M-b, M-X, ...)' - If the metafied character X is lowercase, run the command that is - bound to the corresponding uppercase character. - -`prefix-meta ()' - Make the next character typed be metafied. This is for keyboards - without a meta key. Typing ` f' is equivalent to typing - `M-f'. - -`undo (C-_ or C-x C-u)' - Incremental undo, separately remembered for each line. - -`revert-line (M-r)' - Undo all changes made to this line. This is like executing the - `undo' command enough times to get back to the beginning. - -`tilde-expand (M-~)' - Perform tilde expansion on the current word. - -`set-mark (C-@)' - Set the mark to the current point. If a numeric argument is - supplied, the mark is set to that position. - -`exchange-point-and-mark (C-x C-x)' - Swap the point with the mark. The current cursor position is set - to the saved position, and the old cursor position is saved as the - mark. - -`character-search (C-])' - A character is read and point is moved to the next occurrence of - that character. A negative count searches for previous - occurrences. - -`character-search-backward (M-C-])' - A character is read and point is moved to the previous occurrence - of that character. A negative count searches for subsequent - occurrences. - -`insert-comment (M-#)' - The value of the `comment-begin' variable is inserted at the - beginning of the current line, and the line is accepted as if a - newline had been typed. - -`dump-functions ()' - Print all of the functions and their key bindings to the Readline - output stream. If a numeric argument is supplied, the output is - formatted in such a way that it can be made part of an INPUTRC - file. This command is unbound by default. - -`dump-variables ()' - Print all of the settable variables and their values to the - Readline output stream. If a numeric argument is supplied, the - output is formatted in such a way that it can be made part of an - INPUTRC file. This command is unbound by default. - -`dump-macros ()' - Print all of the Readline key sequences bound to macros and the - strings they output. If a numeric argument is supplied, the - output is formatted in such a way that it can be made part of an - INPUTRC file. This command is unbound by default. - - -File: rluserman.info, Node: Readline vi Mode, Prev: Bindable Readline Commands, Up: Command Line Editing - -Readline vi Mode -================ - - While the Readline library does not have a full set of `vi' editing -functions, it does contain enough to allow simple editing of the line. -The Readline `vi' mode behaves as specified in the POSIX 1003.2 -standard. - - In order to switch interactively between `emacs' and `vi' editing -modes, use the command `M-C-j' (toggle-editing-mode). The Readline -default is `emacs' mode. - - When you enter a line in `vi' mode, you are already placed in -`insertion' mode, as if you had typed an `i'. Pressing switches -you into `command' mode, where you can edit the text of the line with -the standard `vi' movement keys, move to previous history lines with -`k' and subsequent lines with `j', and so forth. - - - -Tag Table: -Node: Top1208 -Node: Command Line Editing1604 -Node: Introduction and Notation2218 -Node: Readline Interaction3837 -Node: Readline Bare Essentials5025 -Node: Readline Movement Commands6807 -Node: Readline Killing Commands7765 -Node: Readline Arguments9676 -Node: Searching10713 -Node: Readline Init File12670 -Node: Readline Init File Syntax13732 -Node: Conditional Init Constructs23349 -Node: Sample Init File25789 -Node: Bindable Readline Commands28960 -Node: Commands For Moving30011 -Node: Commands For History30861 -Node: Commands For Text33644 -Node: Commands For Killing35650 -Node: Numeric Arguments37624 -Node: Commands For Completion38753 -Node: Keyboard Macros40243 -Node: Miscellaneous Commands40803 -Node: Readline vi Mode43620 - -End Tag Table diff --git 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b(.)h(.)f(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)g(.)h(.)f(.)g(.)g(.)h -(.)f(.)g(.)g(.)42 b Fk(1)224 389 y Fm(1.1)j(In)o(tro)q(duction)16 -b(to)f(Line)h(Editing)e Fd(.)7 b(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.) -f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f -(.)27 b Fm(1)224 444 y(1.2)45 b(Readline)17 b(In)o(teraction)8 -b Fd(.)g(.)g(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)23 b Fm(1)374 499 y(1.2.1)44 b(Readline)17 -b(Bare)e(Essen)o(tials)f Fd(.)7 b(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h -(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)27 -b Fm(1)374 553 y(1.2.2)44 b(Readline)17 b(Mo)o(v)o(emen)o(t)d(Commands) -7 b Fd(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f -(.)h(.)21 b Fm(2)374 608 y(1.2.3)44 b(Readline)17 b(Killing)h(Commands) -11 b Fd(.)c(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h -(.)f(.)h(.)f(.)h(.)25 b Fm(2)374 663 y(1.2.4)44 b(Readline)17 -b(Argumen)o(ts)12 b Fd(.)c(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)27 -b Fm(3)374 718 y(1.2.5)44 b(Searc)o(hing)16 b(for)e(Commands)h(in)h -(the)f(History)e Fd(.)8 b(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)27 -b Fm(3)224 773 y(1.3)45 b(Readline)17 b(Init)g(File)e -Fd(.)7 b(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)h(.)f(.)29 b Fm(4)374 827 y(1.3.1)44 b(Readline)17 -b(Init)f(File)h(Syn)o(tax)7 b Fd(.)g(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.) -f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)21 -b Fm(4)374 882 y(1.3.2)44 b(Conditional)16 b(Init)g(Constructs)5 -b Fd(.)i(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -h(.)f(.)h(.)g(.)f(.)19 b Fm(8)374 937 y(1.3.3)44 b(Sample)16 -b(Init)g(File)11 b Fd(.)e(.)e(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h 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-Fd(.)c(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)27 -b Fm(15)374 1320 y(1.4.6)44 b(Letting)15 b(Readline)j(T)o(yp)q(e)d(F)l -(or)g(Y)l(ou)10 b Fd(.)d(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -h(.)f(.)h(.)f(.)25 b Fm(16)374 1375 y(1.4.7)44 b(Keyb)q(oard)15 -b(Macros)6 b Fd(.)h(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)21 -b Fm(16)374 1430 y(1.4.8)44 b(Some)15 b(Miscellaneous)i(Commands)7 -b Fd(.)g(.)g(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.) -22 b Fm(17)224 1485 y(1.5)45 b(Readline)17 b(vi)f(Mo)q(de)e -Fd(.)7 b(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.) -f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)f(.)h(.)g(.)f(.)h(.)f(.)h(.)f -(.)h(.)f(.)h(.)28 b Fm(18)p eop -%%Page: -2 22 --2 21 bop 75 -58 a Fm(ii)1321 b(GNU)15 b(Readline)i(Library)p -eop -%%Trailer -end -userdict /end-hook known{end-hook}if -%%EOF diff --git a/readline/examples/excallback.c b/readline/examples/excallback.c new file mode 100644 --- /dev/null +++ b/readline/examples/excallback.c @@ -0,0 +1,188 @@ +/* +From: Jeff Solomon +Date: Fri, 9 Apr 1999 10:13:27 -0700 (PDT) +To: chet@po.cwru.edu +Subject: new readline example +Message-ID: <14094.12094.527305.199695@mrclean.Stanford.EDU> + +Chet, + +I've been using readline 4.0. Specifically, I've been using the perl +version Term::ReadLine::Gnu. It works great. + +Anyway, I've been playing around the alternate interface and I wanted +to contribute a little C program, callback.c, to you that you could +use as an example of the alternate interface in the /examples +directory of the readline distribution. + +My example shows how, using the alternate interface, you can +interactively change the prompt (which is very nice imo). Also, I +point out that you must roll your own terminal setting when using the +alternate interface because readline depreps (using your parlance) the +terminal while in the user callback. I try to demostrate what I mean +with an example. I've included the program below. + +To compile, I just put the program in the examples directory and made +the appropriate changes to the EXECUTABLES and OBJECTS line and added +an additional target 'callback'. + +I compiled on my Sun Solaris2.6 box using Sun's cc. + +Let me know what you think. + +Jeff +*/ + +#if defined (HAVE_CONFIG_H) +#include +#endif + +#include +#include + +#ifdef HAVE_UNISTD_H +#include +#endif + +#include /* xxx - should make this more general */ + +#ifdef READLINE_LIBRARY +# include "readline.h" +#else +# include +#endif + +/* This little examples demonstrates the alternate interface to using readline. + * In the alternate interface, the user maintains control over program flow and + * only calls readline when STDIN is readable. Using the alternate interface, + * you can do anything else while still using readline (like talking to a + * network or another program) without blocking. + * + * Specifically, this program highlights two importants features of the + * alternate interface. The first is the ability to interactively change the + * prompt, which can't be done using the regular interface since rl_prompt is + * read-only. + * + * The second feature really highlights a subtle point when using the alternate + * interface. That is, readline will not alter the terminal when inside your + * callback handler. So let's so, your callback executes a user command that + * takes a non-trivial amount of time to complete (seconds). While your + * executing the command, the user continues to type keystrokes and expects them + * to be re-echoed on the new prompt when it returns. Unfortunately, the default + * terminal configuration doesn't do this. After the prompt returns, the user + * must hit one additional keystroke and then will see all of his previous + * keystrokes. To illustrate this, compile and run this program. Type "sleep" at + * the prompt and then type "bar" before the prompt returns (you have 3 + * seconds). Notice how "bar" is re-echoed on the prompt after the prompt + * returns? This is what you expect to happen. Now comment out the 4 lines below + * the line that says COMMENT LINE BELOW. Recompile and rerun the program and do + * the same thing. When the prompt returns, you should not see "bar". Now type + * "f", see how "barf" magically appears? This behavior is un-expected and not + * desired. + */ + +void process_line(char *line); +int change_prompt(void); +char *get_prompt(void); + +int prompt = 1; +char prompt_buf[40], line_buf[256]; +tcflag_t old_lflag; +cc_t old_vtime; +struct termios term; + +int +main() +{ + fd_set fds; + + /* Adjust the terminal slightly before the handler is installed. Disable + * canonical mode processing and set the input character time flag to be + * non-blocking. + */ + if( tcgetattr(STDIN_FILENO, &term) < 0 ) { + perror("tcgetattr"); + exit(1); + } + old_lflag = term.c_lflag; + old_vtime = term.c_cc[VTIME]; + term.c_lflag &= ~ICANON; + term.c_cc[VTIME] = 1; + /* COMMENT LINE BELOW - see above */ + if( tcsetattr(STDIN_FILENO, TCSANOW, &term) < 0 ) { + perror("tcsetattr"); + exit(1); + } + + rl_add_defun("change-prompt", change_prompt, CTRL('t')); + rl_callback_handler_install(get_prompt(), process_line); + + while(1) { + FD_ZERO(&fds); + FD_SET(fileno(stdin), &fds); + + if( select(FD_SETSIZE, &fds, NULL, NULL, NULL) < 0) { + perror("select"); + exit(1); + } + + if( FD_ISSET(fileno(stdin), &fds) ) { + rl_callback_read_char(); + } + } +} + +void +process_line(char *line) +{ + if( line == NULL ) { + fprintf(stderr, "\n", line); + + /* reset the old terminal setting before exiting */ + term.c_lflag = old_lflag; + term.c_cc[VTIME] = old_vtime; + if( tcsetattr(STDIN_FILENO, TCSANOW, &term) < 0 ) { + perror("tcsetattr"); + exit(1); + } + exit(0); + } + + if( strcmp(line, "sleep") == 0 ) { + sleep(3); + } else { + fprintf(stderr, "|%s|\n", line); + } + + free (line); +} + +int +change_prompt(void) +{ + /* toggle the prompt variable */ + prompt = !prompt; + + /* save away the current contents of the line */ + strcpy(line_buf, rl_line_buffer); + + /* install a new handler which will change the prompt and erase the current line */ + rl_callback_handler_install(get_prompt(), process_line); + + /* insert the old text on the new line */ + rl_insert_text(line_buf); + + /* redraw the current line - this is an undocumented function. It invokes the + * redraw-current-line command. + */ + rl_refresh_line(0, 0); +} + +char * +get_prompt(void) +{ + /* The prompts can even be different lengths! */ + sprintf(prompt_buf, "%s", + prompt ? "Hit ctrl-t to toggle prompt> " : "Pretty cool huh?> "); + return prompt_buf; +} diff --git a/readline/examples/rlfe.c b/readline/examples/rlfe.c new file mode 100644 --- /dev/null +++ b/readline/examples/rlfe.c @@ -0,0 +1,1042 @@ +/* A front-end using readline to "cook" input lines for Kawa. + * + * Copyright (C) 1999 Per Bothner + * + * This front-end program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as published + * by the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * Some code from Johnson & Troan: "Linux Application Development" + * (Addison-Wesley, 1998) was used directly or for inspiration. + */ + +/* PROBLEMS/TODO: + * + * Only tested under Linux; needs to be ported. + * + * When running mc -c under the Linux console, mc does not recognize + * mouse clicks, which mc does when not running under fep. + * + * Pasting selected text containing tabs is like hitting the tab character, + * which invokes readline completion. We don't want this. I don't know + * if this is fixable without integrating fep into a terminal emulator. + * + * Echo suppression is a kludge, but can only be avoided with better kernel + * support: We need a tty mode to disable "real" echoing, while still + * letting the inferior think its tty driver to doing echoing. + * Stevens's book claims SCR$ and BSD4.3+ have TIOCREMOTE. + * + * The latest readline may have some hooks we can use to avoid having + * to back up the prompt. + * + * Desirable readline feature: When in cooked no-echo mode (e.g. password), + * echo characters are they are types with '*', but remove them when done. + * + * A synchronous output while we're editing an input line should be + * inserted in the output view *before* the input line, so that the + * lines being edited (with the prompt) float at the end of the input. + * + * A "page mode" option to emulate more/less behavior: At each page of + * output, pause for a user command. This required parsing the output + * to keep track of line lengths. It also requires remembering the + * output, if we want an option to scroll back, which suggests that + * this should be integrated with a terminal emulator like xterm. + */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifdef READLINE_LIBRARY +# include "readline.h" +# include "history.h" +#else +# include +# include +#endif + +#ifndef COMMAND +#define COMMAND "/bin/sh" +#endif +#ifndef COMMAND_ARGS +#define COMMAND_ARGS COMMAND +#endif + +#ifndef HAVE_MEMMOVE +#ifndef memmove +# if __GNUC__ > 1 +# define memmove(d, s, n) __builtin_memcpy(d, s, n) +# else +# define memmove(d, s, n) memcpy(d, s, n) +# endif +#else +# define memmove(d, s, n) memcpy(d, s, n) +#endif +#endif + +#define APPLICATION_NAME "Rlfe" + +#ifndef errno +extern int errno; +#endif + +extern int optind; +extern char *optarg; + +static char *progname; +static char *progversion; + +static int in_from_inferior_fd; +static int out_to_inferior_fd; + +/* Unfortunately, we cannot safely display echo from the inferior process. + The reason is that the echo bit in the pty is "owned" by the inferior, + and if we try to turn it off, we could confuse the inferior. + Thus, when echoing, we get echo twice: First readline echoes while + we're actually editing. Then we send the line to the inferior, and the + terminal driver send back an extra echo. + The work-around is to remember the input lines, and when we see that + line come back, we supress the output. + A better solution (supposedly available on SVR4) would be a smarter + terminal driver, with more flags ... */ +#define ECHO_SUPPRESS_MAX 1024 +char echo_suppress_buffer[ECHO_SUPPRESS_MAX]; +int echo_suppress_start = 0; +int echo_suppress_limit = 0; + +/* #define DEBUG */ + +static FILE *logfile = NULL; + +#ifdef DEBUG +FILE *debugfile = NULL; +#define DPRINT0(FMT) (fprintf(debugfile, FMT), fflush(debugfile)) +#define DPRINT1(FMT, V1) (fprintf(debugfile, FMT, V1), fflush(debugfile)) +#define DPRINT2(FMT, V1, V2) (fprintf(debugfile, FMT, V1, V2), fflush(debugfile)) +#else +#define DPRINT0(FMT) /* Do nothing */ +#define DPRINT1(FMT, V1) /* Do nothing */ +#define DPRINT2(FMT, V1, V2) /* Do nothing */ +#endif + +struct termios orig_term; + +static int rlfe_directory_completion_hook __P((char **)); +static int rlfe_directory_rewrite_hook __P((char **)); +static char *rlfe_filename_completion_function __P((const char *, int)); + +/* Pid of child process. */ +static pid_t child = -1; + +static void +sig_child (int signo) +{ + int status; + wait (&status); + DPRINT0 ("(Child process died.)\n"); + tcsetattr(STDIN_FILENO, TCSANOW, &orig_term); + exit (0); +} + +volatile int propagate_sigwinch = 0; + +/* sigwinch_handler + * propagate window size changes from input file descriptor to + * master side of pty. + */ +void sigwinch_handler(int signal) { + propagate_sigwinch = 1; +} + +/* get_master_pty() takes a double-indirect character pointer in which + * to put a slave name, and returns an integer file descriptor. + * If it returns < 0, an error has occurred. + * Otherwise, it has returned the master pty file descriptor, and fills + * in *name with the name of the corresponding slave pty. + * Once the slave pty has been opened, you are responsible to free *name. + */ + +int get_master_pty(char **name) { + int i, j; + /* default to returning error */ + int master = -1; + + /* create a dummy name to fill in */ + *name = strdup("/dev/ptyXX"); + + /* search for an unused pty */ + for (i=0; i<16 && master <= 0; i++) { + for (j=0; j<16 && master <= 0; j++) { + (*name)[5] = 'p'; + (*name)[8] = "pqrstuvwxyzPQRST"[i]; + (*name)[9] = "0123456789abcdef"[j]; + /* open the master pty */ + if ((master = open(*name, O_RDWR)) < 0) { + if (errno == ENOENT) { + /* we are out of pty devices */ + free (*name); + return (master); + } + } + else { + /* By substituting a letter, we change the master pty + * name into the slave pty name. + */ + (*name)[5] = 't'; + if (access(*name, R_OK|W_OK) != 0) + { + close(master); + master = -1; + } + } + } + } + if ((master < 0) && (i == 16) && (j == 16)) { + /* must have tried every pty unsuccessfully */ + free (*name); + return (master); + } + + (*name)[5] = 't'; + + return (master); +} + +/* get_slave_pty() returns an integer file descriptor. + * If it returns < 0, an error has occurred. + * Otherwise, it has returned the slave file descriptor. + */ + +int get_slave_pty(char *name) { + struct group *gptr; + gid_t gid; + int slave = -1; + + /* chown/chmod the corresponding pty, if possible. + * This will only work if the process has root permissions. + * Alternatively, write and exec a small setuid program that + * does just this. + */ + if ((gptr = getgrnam("tty")) != 0) { + gid = gptr->gr_gid; + } else { + /* if the tty group does not exist, don't change the + * group on the slave pty, only the owner + */ + gid = -1; + } + + /* Note that we do not check for errors here. If this is code + * where these actions are critical, check for errors! + */ + chown(name, getuid(), gid); + /* This code only makes the slave read/writeable for the user. + * If this is for an interactive shell that will want to + * receive "write" and "wall" messages, OR S_IWGRP into the + * second argument below. + */ + chmod(name, S_IRUSR|S_IWUSR); + + /* open the corresponding slave pty */ + slave = open(name, O_RDWR); + return (slave); +} + +/* Certain special characters, such as ctrl/C, we want to pass directly + to the inferior, rather than letting readline handle them. */ + +static char special_chars[20]; +static int special_chars_count; + +static void +add_special_char(int ch) +{ + if (ch != 0) + special_chars[special_chars_count++] = ch; +} + +static int eof_char; + +static int +is_special_char(int ch) +{ + int i; +#if 0 + if (ch == eof_char && rl_point == rl_end) + return 1; +#endif + for (i = special_chars_count; --i >= 0; ) + if (special_chars[i] == ch) + return 1; + return 0; +} + +static char buf[1024]; +/* buf[0 .. buf_count-1] is the what has been emitted on the current line. + It is used as the readline prompt. */ +static int buf_count = 0; + +int num_keys = 0; + +static void +null_prep_terminal (int meta) +{ +} + +static void +null_deprep_terminal () +{ +} + +char pending_special_char; + +static void +line_handler (char *line) +{ + if (line == NULL) + { + char buf[1]; + DPRINT0("saw eof!\n"); + buf[0] = '\004'; /* ctrl/d */ + write (out_to_inferior_fd, buf, 1); + } + else + { + static char enter[] = "\r"; + /* Send line to inferior: */ + int length = strlen (line); + if (length > ECHO_SUPPRESS_MAX-2) + { + echo_suppress_start = 0; + echo_suppress_limit = 0; + } + else + { + if (echo_suppress_limit + length > ECHO_SUPPRESS_MAX - 2) + { + if (echo_suppress_limit - echo_suppress_start + length + <= ECHO_SUPPRESS_MAX - 2) + { + memmove (echo_suppress_buffer, + echo_suppress_buffer + echo_suppress_start, + echo_suppress_limit - echo_suppress_start); + echo_suppress_limit -= echo_suppress_start; + echo_suppress_start = 0; + } + else + { + echo_suppress_limit = 0; + } + echo_suppress_start = 0; + } + memcpy (echo_suppress_buffer + echo_suppress_limit, + line, length); + echo_suppress_limit += length; + echo_suppress_buffer[echo_suppress_limit++] = '\r'; + echo_suppress_buffer[echo_suppress_limit++] = '\n'; + } + write (out_to_inferior_fd, line, length); + if (pending_special_char == 0) + { + write (out_to_inferior_fd, enter, sizeof(enter)-1); + if (*line) + add_history (line); + } + free (line); + } + rl_callback_handler_remove (); + buf_count = 0; + num_keys = 0; + if (pending_special_char != 0) + { + write (out_to_inferior_fd, &pending_special_char, 1); + pending_special_char = 0; + } +} + +/* Value of rl_getc_function. + Use this because readline should read from stdin, not rl_instream, + points to the pty (so readline has monitor its terminal modes). */ + +int +my_rl_getc (FILE *dummy) +{ + int ch = rl_getc (stdin); + if (is_special_char (ch)) + { + pending_special_char = ch; + return '\r'; + } + return ch; +} + +static void +usage() +{ + fprintf (stderr, "%s: usage: %s [-l filename] [-a] [-n appname] [-hv] [command [arguments...]]\n", + progname, progname); +} + +int +main(int argc, char** argv) +{ + char *path; + int i, append; + int master; + char *name, *logfname, *appname; + int in_from_tty_fd; + struct sigaction act; + struct winsize ws; + struct termios t; + int maxfd; + fd_set in_set; + static char empty_string[1] = ""; + char *prompt = empty_string; + int ioctl_err = 0; + + if ((progname = strrchr (argv[0], '/')) == 0) + progname = argv[0]; + else + progname++; + progversion = RL_LIBRARY_VERSION; + + append = 0; + appname = APPLICATION_NAME; + logfname = (char *)NULL; + + while ((i = getopt (argc, argv, "ahl:n:v")) != EOF) + { + switch (i) + { + case 'l': + logfname = optarg; + break; + case 'n': + appname = optarg; + break; + case 'a': + append = 1; + break; + case 'h': + usage (); + exit (0); + case 'v': + fprintf (stderr, "%s version %s\n", progname, progversion); + exit (0); + default: + usage (); + exit (2); + } + } + + argc -= optind; + argv += optind; + + if (logfname) + { + logfile = fopen (logfname, append ? "a" : "w"); + if (logfile == 0) + fprintf (stderr, "%s: warning: could not open log file %s: %s\n", + progname, logfname, strerror (errno)); + } + + rl_readline_name = appname; + +#ifdef DEBUG + debugfile = fopen("LOG", "w"); +#endif + + if ((master = get_master_pty(&name)) < 0) + { + perror("ptypair: could not open master pty"); + exit(1); + } + + DPRINT1("pty name: '%s'\n", name); + + /* set up SIGWINCH handler */ + act.sa_handler = sigwinch_handler; + sigemptyset(&(act.sa_mask)); + act.sa_flags = 0; + if (sigaction(SIGWINCH, &act, NULL) < 0) + { + perror("ptypair: could not handle SIGWINCH "); + exit(1); + } + + if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) < 0) + { + perror("ptypair: could not get window size"); + exit(1); + } + + if ((child = fork()) < 0) + { + perror("cannot fork"); + exit(1); + } + + if (child == 0) + { + int slave; /* file descriptor for slave pty */ + + /* We are in the child process */ + close(master); + +#ifdef TIOCSCTTY + if ((slave = get_slave_pty(name)) < 0) + { + perror("ptypair: could not open slave pty"); + exit(1); + } + free(name); +#endif + + /* We need to make this process a session group leader, because + * it is on a new PTY, and things like job control simply will + * not work correctly unless there is a session group leader + * and process group leader (which a session group leader + * automatically is). This also disassociates us from our old + * controlling tty. + */ + if (setsid() < 0) + { + perror("could not set session leader"); + } + + /* Tie us to our new controlling tty. */ +#ifdef TIOCSCTTY + if (ioctl(slave, TIOCSCTTY, NULL)) + { + perror("could not set new controlling tty"); + } +#else + if ((slave = get_slave_pty(name)) < 0) + { + perror("ptypair: could not open slave pty"); + exit(1); + } + free(name); +#endif + + /* make slave pty be standard in, out, and error */ + dup2(slave, STDIN_FILENO); + dup2(slave, STDOUT_FILENO); + dup2(slave, STDERR_FILENO); + + /* at this point the slave pty should be standard input */ + if (slave > 2) + { + close(slave); + } + + /* Try to restore window size; failure isn't critical */ + if (ioctl(STDOUT_FILENO, TIOCSWINSZ, &ws) < 0) + { + perror("could not restore window size"); + } + + /* now start the shell */ + { + static char* command_args[] = { COMMAND_ARGS, NULL }; + if (argc < 1) + execvp(COMMAND, command_args); + else + execvp(argv[0], &argv[0]); + } + + /* should never be reached */ + exit(1); + } + + /* parent */ + signal (SIGCHLD, sig_child); + free(name); + + /* Note that we only set termios settings for standard input; + * the master side of a pty is NOT a tty. + */ + tcgetattr(STDIN_FILENO, &orig_term); + + t = orig_term; + eof_char = t.c_cc[VEOF]; + /* add_special_char(t.c_cc[VEOF]);*/ + add_special_char(t.c_cc[VINTR]); + add_special_char(t.c_cc[VQUIT]); + add_special_char(t.c_cc[VSUSP]); +#if defined (VDISCARD) + add_special_char(t.c_cc[VDISCARD]); +#endif + +#if 0 + t.c_lflag |= (ICANON | ISIG | ECHO | ECHOCTL | ECHOE | \ + ECHOK | ECHOKE | ECHONL | ECHOPRT ); +#else + t.c_lflag &= ~(ICANON | ISIG | ECHO | ECHOCTL | ECHOE | \ + ECHOK | ECHOKE | ECHONL | ECHOPRT ); +#endif + t.c_iflag |= IGNBRK; + t.c_cc[VMIN] = 1; + t.c_cc[VTIME] = 0; + tcsetattr(STDIN_FILENO, TCSANOW, &t); + in_from_inferior_fd = master; + out_to_inferior_fd = master; + rl_instream = fdopen (master, "r"); + rl_getc_function = my_rl_getc; + + rl_prep_term_function = null_prep_terminal; + rl_deprep_term_function = null_deprep_terminal; + rl_callback_handler_install (prompt, line_handler); + +#if 1 + rl_directory_completion_hook = rlfe_directory_completion_hook; + rl_completion_entry_function = rlfe_filename_completion_function; +#else + rl_directory_rewrite_hook = rlfe_directory_rewrite_hook; +#endif + + in_from_tty_fd = STDIN_FILENO; + FD_ZERO (&in_set); + maxfd = in_from_inferior_fd > in_from_tty_fd ? in_from_inferior_fd + : in_from_tty_fd; + for (;;) + { + int num; + FD_SET (in_from_inferior_fd, &in_set); + FD_SET (in_from_tty_fd, &in_set); + + num = select(maxfd+1, &in_set, NULL, NULL, NULL); + + if (propagate_sigwinch) + { + struct winsize ws; + if (ioctl (STDIN_FILENO, TIOCGWINSZ, &ws) >= 0) + { + ioctl (master, TIOCSWINSZ, &ws); + } + propagate_sigwinch = 0; + continue; + } + + if (num <= 0) + { + perror ("select"); + exit (-1); + } + if (FD_ISSET (in_from_tty_fd, &in_set)) + { + extern int readline_echoing_p; + struct termios term_master; + int do_canon = 1; + int ioctl_ret; + + DPRINT1("[tty avail num_keys:%d]\n", num_keys); + + /* If we can't get tty modes for the master side of the pty, we + can't handle non-canonical-mode programs. Always assume the + master is in canonical echo mode if we can't tell. */ + ioctl_ret = tcgetattr(master, &term_master); + + if (ioctl_ret >= 0) + { + DPRINT2 ("echo:%d, canon:%d\n", + (term_master.c_lflag & ECHO) != 0, + (term_master.c_lflag & ICANON) != 0); + do_canon = (term_master.c_lflag & ICANON) != 0; + readline_echoing_p = (term_master.c_lflag & ECHO) != 0; + } + else + { + if (ioctl_err == 0) + DPRINT1("tcgetattr on master fd failed: errno = %d\n", errno); + ioctl_err = 1; + } + + if (do_canon == 0 && num_keys == 0) + { + char ch[10]; + int count = read (STDIN_FILENO, ch, sizeof(ch)); + write (out_to_inferior_fd, ch, count); + } + else + { + if (num_keys == 0) + { + int i; + /* Re-install callback handler for new prompt. */ + if (prompt != empty_string) + free (prompt); + prompt = malloc (buf_count + 1); + if (prompt == NULL) + prompt = empty_string; + else + { + memcpy (prompt, buf, buf_count); + prompt[buf_count] = '\0'; + DPRINT1("New prompt '%s'\n", prompt); +#if 0 /* ifdef HAVE_RL_ALREADY_PROMPTED -- doesn't work */ + rl_already_prompted = buf_count > 0; +#else + if (buf_count > 0) + write (1, "\r", 1); +#endif + } + rl_callback_handler_install (prompt, line_handler); + } + num_keys++; + rl_callback_read_char (); + } + } + else /* input from inferior. */ + { + int i; + int count; + int old_count; + if (buf_count > (sizeof(buf) >> 2)) + buf_count = 0; + count = read (in_from_inferior_fd, buf+buf_count, + sizeof(buf) - buf_count); + if (count <= 0) + { + DPRINT0 ("(Connection closed by foreign host.)\n"); + tcsetattr(STDIN_FILENO, TCSANOW, &orig_term); + exit (0); + } + old_count = buf_count; + + /* Do some minimal carriage return translation and backspace + processing before logging the input line. */ + if (logfile) + { +#ifndef __GNUC__ + char *b; +#else + char b[count + 1]; +#endif + int i, j; + +#ifndef __GNUC__ + b = malloc (count + 1); + if (b) { +#endif + for (i = 0; i < count; i++) + b[i] = buf[buf_count + i]; + b[i] = '\0'; + for (i = j = 0; i <= count; i++) + { + if (b[i] == '\r') + { + if (b[i+1] != '\n') + b[j++] = '\n'; + } + else if (b[i] == '\b') + { + if (i) + j--; + } + else + b[j++] = b[i]; + } + fprintf (logfile, "%s", b); + +#ifndef __GNUC__ + free (b); + } +#endif + } + + /* Look for any pending echo that we need to suppress. */ + while (echo_suppress_start < echo_suppress_limit + && count > 0 + && buf[buf_count] == echo_suppress_buffer[echo_suppress_start]) + { + count--; + buf_count++; + echo_suppress_start++; + } + + /* Write to the terminal anything that was not suppressed. */ + if (count > 0) + write (1, buf + buf_count, count); + + /* Finally, look for a prompt candidate. + * When we get around to going input (from the keyboard), + * we will consider the prompt to be anything since the last + * line terminator. So we need to save that text in the + * initial part of buf. However, anything before the + * most recent end-of-line is not interesting. */ + buf_count += count; +#if 1 + for (i = buf_count; --i >= old_count; ) +#else + for (i = buf_count - 1; i-- >= buf_count - count; ) +#endif + { + if (buf[i] == '\n' || buf[i] == '\r') + { + i++; + memmove (buf, buf+i, buf_count - i); + buf_count -= i; + break; + } + } + DPRINT2("-> i: %d, buf_count: %d\n", i, buf_count); + } + } +} + +/* + * + * FILENAME COMPLETION FOR RLFE + * + */ + +#ifndef PATH_MAX +# define PATH_MAX 1024 +#endif + +#define DIRSEP '/' +#define ISDIRSEP(x) ((x) == '/') +#define PATHSEP(x) (ISDIRSEP(x) || (x) == 0) + +#define DOT_OR_DOTDOT(x) \ + ((x)[0] == '.' && (PATHSEP((x)[1]) || \ + ((x)[1] == '.' && PATHSEP((x)[2])))) + +#define FREE(x) if (x) free(x) + +#define STRDUP(s, x) do { \ + s = strdup (x);\ + if (s == 0) \ + return ((char *)NULL); \ + } while (0) + +static int +get_inferior_cwd (path, psize) + char *path; + size_t psize; +{ + int n; + static char procfsbuf[PATH_MAX] = { '\0' }; + + if (procfsbuf[0] == '\0') + sprintf (procfsbuf, "/proc/%d/cwd", (int)child); + n = readlink (procfsbuf, path, psize); + if (n < 0) + return n; + if (n > psize) + return -1; + path[n] = '\0'; + return n; +} + +static int +rlfe_directory_rewrite_hook (dirnamep) + char **dirnamep; +{ + char *ldirname, cwd[PATH_MAX], *retdir, *ld; + int n, ldlen; + + ldirname = *dirnamep; + + if (*ldirname == '/') + return 0; + + n = get_inferior_cwd (cwd, sizeof(cwd) - 1); + if (n < 0) + return 0; + if (n == 0) /* current directory */ + { + cwd[0] = '.'; + cwd[1] = '\0'; + n = 1; + } + + /* Minimally canonicalize ldirname by removing leading `./' */ + for (ld = ldirname; *ld; ) + { + if (ISDIRSEP (ld[0])) + ld++; + else if (ld[0] == '.' && PATHSEP(ld[1])) + ld++; + else + break; + } + ldlen = (ld && *ld) ? strlen (ld) : 0; + + retdir = (char *)malloc (n + ldlen + 3); + if (retdir == 0) + return 0; + if (ldlen) + sprintf (retdir, "%s/%s", cwd, ld); + else + strcpy (retdir, cwd); + free (ldirname); + + *dirnamep = retdir; + + DPRINT1("rl_directory_rewrite_hook returns %s\n", retdir); + return 1; +} + +/* Translate *DIRNAMEP to be relative to the inferior's CWD. Leave a trailing + slash on the result. */ +static int +rlfe_directory_completion_hook (dirnamep) + char **dirnamep; +{ + char *ldirname, *retdir; + int n, ldlen; + + ldirname = *dirnamep; + + if (*ldirname == '/') + return 0; + + n = rlfe_directory_rewrite_hook (dirnamep); + if (n == 0) + return 0; + + ldirname = *dirnamep; + ldlen = (ldirname && *ldirname) ? strlen (ldirname) : 0; + + if (ldlen == 0 || ldirname[ldlen - 1] != '/') + { + retdir = (char *)malloc (ldlen + 3); + if (retdir == 0) + return 0; + if (ldlen) + strcpy (retdir, ldirname); + else + retdir[ldlen++] = '.'; + retdir[ldlen] = '/'; + retdir[ldlen+1] = '\0'; + free (ldirname); + + *dirnamep = retdir; + } + + DPRINT1("rl_directory_completion_hook returns %s\n", retdir); + return 1; +} + +static char * +rlfe_filename_completion_function (text, state) + const char *text; + int state; +{ + static DIR *directory; + static char *filename = (char *)NULL; + static char *dirname = (char *)NULL, *ud = (char *)NULL; + static int flen, udlen; + char *temp; + struct dirent *dentry; + + if (state == 0) + { + if (directory) + { + closedir (directory); + directory = 0; + } + FREE (dirname); + FREE (filename); + FREE (ud); + + if (text && *text) + STRDUP (filename, text); + else + { + filename = malloc(1); + if (filename == 0) + return ((char *)NULL); + filename[0] = '\0'; + } + dirname = (text && *text) ? strdup (text) : strdup ("."); + if (dirname == 0) + return ((char *)NULL); + + temp = strrchr (dirname, '/'); + if (temp) + { + strcpy (filename, ++temp); + *temp = '\0'; + } + else + { + dirname[0] = '.'; + dirname[1] = '\0'; + } + + STRDUP (ud, dirname); + udlen = strlen (ud); + + rlfe_directory_completion_hook (&dirname); + + directory = opendir (dirname); + flen = strlen (filename); + + rl_filename_completion_desired = 1; + } + + dentry = 0; + while (directory && (dentry = readdir (directory))) + { + if (flen == 0) + { + if (DOT_OR_DOTDOT(dentry->d_name) == 0) + break; + } + else + { + if ((dentry->d_name[0] == filename[0]) && + (strlen (dentry->d_name) >= flen) && + (strncmp (filename, dentry->d_name, flen) == 0)) + break; + } + } + + if (dentry == 0) + { + if (directory) + { + closedir (directory); + directory = 0; + } + FREE (dirname); + FREE (filename); + FREE (ud); + dirname = filename = ud = 0; + return ((char *)NULL); + } + + if (ud == 0 || (ud[0] == '.' && ud[1] == '\0')) + temp = strdup (dentry->d_name); + else + { + temp = malloc (1 + udlen + strlen (dentry->d_name)); + strcpy (temp, ud); + strcpy (temp + udlen, dentry->d_name); + } + return (temp); +} diff --git a/readline/examples/rlversion.c b/readline/examples/rlversion.c new file mode 100644 --- /dev/null +++ b/readline/examples/rlversion.c @@ -0,0 +1,23 @@ +/* + * rlversion -- print out readline's version number + */ + +#if defined (HAVE_CONFIG_H) +# include +#endif + +#include +#include +#include "posixstat.h" + +#ifdef READLINE_LIBRARY +# include "readline.h" +#else +# include +#endif + +main() +{ + printf ("%s\n", rl_library_version ? rl_library_version : "unknown"); + exit (0); +}