Mercurial > hg > octave-lojdl > gnulib-hg
changeset 12883:f1934a88426d
init.sh: fix EXEEXT shims to work also for names like test-prog
* tests/init.sh: Re-exec a better shell, when needed.
If the current shell lacks support for posix $(...), an init.sh-using
test will now try to find a shell that supports that. If EXEEXT is
nonempty, we also require support for hyphen-in-alias-name and shell
substitutions like ${var#glob}. Failure to find such a shell results
in a skipped test.
author | Jim Meyering <meyering@redhat.com> |
---|---|
date | Sun, 21 Feb 2010 17:47:43 +0100 |
parents | 4c2d2e457224 |
children | ad24ceecdab3 |
files | ChangeLog tests/init.sh |
diffstat | 2 files changed, 53 insertions(+), 7 deletions(-) [+] |
line wrap: on
line diff
--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,13 @@ +2010-02-21 Jim Meyering <meyering@redhat.com> + + init.sh: fix EXEEXT shims to work also for names like test-prog + * tests/init.sh: Re-exec a better shell, when needed. + If the current shell lacks support for posix $(...), an init.sh-using + test will now try to find a shell that supports that. If EXEEXT is + nonempty, we also require support for hyphen-in-alias-name and shell + substitutions like ${var#glob}. Failure to find such a shell results + in a skipped test. + 2010-02-21 Bruno Haible <bruno@clisp.org> Really work around around "broken pipe" error message from bash 3.2.
--- a/tests/init.sh +++ b/tests/init.sh @@ -52,6 +52,43 @@ # 4. Finally # $ exit +# We require $(...) support unconditionally. +# We require a few additional shell features only when $EXEEXT is nonempty, +# in order to support automatic $EXEEXT emulation: +# - hyphen-containing alias names +# - we prefer to use ${var#...} substitution, rather than having +# to work around lack of support for that feature. +# The following code attempts to find a shell with support for these features +# and re-exec's it. If not, it skips the current test. + +gl_shell_test_script_=' +test $(echo y) = y || exit 1 +test -z "$EXEEXT" && exit 0 +shopt -s expand_aliases +alias a-b="echo zoo" +v=abx + test ${v%x} = ab \ + && test ${v#a} = bx \ + && test $(a-b) = zoo +' + +if test "x$1" = "x--no-reexec"; then + shift +else + for re_shell_ in "${CONFIG_SHELL:-no_shell}" /bin/sh bash dash zsh pdksh fail + do + test "$re_shell_" = no_shell && continue + test "$re_shell_" = fail && skip_ failed to find an adequate shell + if "$re_shell_" -c "$gl_shell_test_script_" 2>/dev/null; then + exec "$re_shell_" "$0" --no-reexec "$@" + echo "$ME_: exec failed" 1>&2 + exit 127 + fi + done +fi + +test -n "$EXEEXT" && shopt -s expand_aliases + # We use a trap below for cleanup. This requires us to go through # hoops to get the right exit status transported through the handler. # So use `Exit STATUS' instead of `exit STATUS' inside of the tests. @@ -117,11 +154,11 @@ } # Consider the files in directory, $1. -# For each file name of the form PROG.exe, create a shim function named +# For each file name of the form PROG.exe, create an alias named # PROG that simply invokes PROG.exe, then return 0. If any selected # file name or the directory name, $1, contains an unexpected character, # define no function and return 1. -create_exe_shim_functions_() +create_exe_shims_() { case $EXEEXT in '') return 0 ;; @@ -134,9 +171,7 @@ if test -n "$base_names_"; then for base_ in $base_names_; do - # Create a function named $base whose sole job is to invoke - # $base_$EXEEXT, assuming its containing dir is already in PATH. - eval "$base_() { $base_$EXEEXT"' "$@"; }' + alias "$base_"="$base_$EXEEXT" done fi @@ -160,8 +195,9 @@ esac PATH="$abs_path_dir_:$PATH" - # Create a function FOO for each FOO.exe in this directory. - create_exe_shim_functions_ "$abs_path_dir_" + # Create an alias, FOO, for each FOO.exe in this directory. + create_exe_shims_ "$abs_path_dir_" \ + || fail_ "something failed (above): $abs_path_dir_" shift done export PATH