Mercurial > hg > octave-lyh > gnulib-hg
changeset 3961:b34619ffab3d
update from texinfo
author | Karl Berry <karl@freefriends.org> |
---|---|
date | Fri, 01 Nov 2002 01:42:06 +0000 |
parents | 3f2e16551946 |
children | be4a50a68d30 |
files | config/texinfo.tex |
diffstat | 1 files changed, 46 insertions(+), 18 deletions(-) [+] |
line wrap: on
line diff
--- a/config/texinfo.tex +++ b/config/texinfo.tex @@ -3,7 +3,7 @@ % Load plain if necessary, i.e., if running under initex. \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi % -\def\texinfoversion{2002-10-30.16} +\def\texinfoversion{2002-10-31.17} % % Copyright (C) 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995, % 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. @@ -68,6 +68,13 @@ \everyjob{\message{[Texinfo version \texinfoversion]}% \catcode`+=\active \catcode`\_=\active} +\message{Basics,} +\chardef\other=12 + +% We never want plain's outer \+ definition in Texinfo. +% For @tex, we can use \tabalign. +\let\+ = \relax + % Save some parts of plain tex whose names we will redefine. \let\ptexb=\b \let\ptexbullet=\bullet @@ -78,19 +85,16 @@ \let\ptexend=\end \let\ptexequiv=\equiv \let\ptexexclam=\! +\let\ptexgtr=> +\let\ptexhat=^ \let\ptexi=\i \let\ptexlbrace=\{ +\let\ptexless=< +\let\ptexplus=+ \let\ptexrbrace=\} \let\ptexstar=\* \let\ptext=\t -% We never want plain's outer \+ definition in Texinfo. -% For @tex, we can use \tabalign. -\let\+ = \relax - -\message{Basics,} -\chardef\other=12 - % If this character appears in an error message or help string, it % starts a new line in the output. \newlinechar = `^^J @@ -841,11 +845,6 @@ % to set catcodes according to plain TeX first, to allow for subscripts, % superscripts, special math chars, etc. % -% @math does not do math typesetting in section titles, index -% entries, and other such contexts where the catcodes are set before -% @math gets a chance to work. This could perhaps be fixed, but for now -% at least we can have real math in the main text, where it's needed most. -% \let\implicitmath = $%$ font-lock fix % % One complication: _ usually means subscripts, but it could also mean @@ -871,9 +870,27 @@ \tex \mathcode`\_="8000 \mathunderscore \let\\ = \mathbackslash + \mathactive \implicitmath\finishmath} \def\finishmath#1{#1\implicitmath\Etex} +% Some active characters (such as <) are spaced differently in math. +% We have to reset their definitions in case the @math was an +% argument to a command which set the catcodes (such as @item or @section). +% +{ + \catcode`^ = \active + \catcode`< = \active + \catcode`> = \active + \catcode`+ = \active + \gdef\mathactive{% + \let^ = \ptexhat + \let< = \ptexless + \let> = \ptexgtr + \let+ = \ptexplus + } +} + % @bullet and @minus need the same treatment as @math, just above. \def\bullet{\implicitmath\ptexbullet\implicitmath} \def\minus{\implicitmath-\implicitmath} @@ -1875,10 +1892,18 @@ % \parskip glue -- logically it's part of the @item we just started. \nobreak \vskip-\parskip % - % Stop a page break at the \parskip glue coming up. Unfortunately + % Stop a page break at the \parskip glue coming up. (Unfortunately % we can't prevent a possible page break at the following - % \baselineskip glue. - \nobreak + % \baselineskip glue.) However, if what follows is an environment + % such as @example, there will be no \parskip glue; then + % the negative vskip we just would cause the example and the item to + % crash together. So we use this bizarre value of 10001 as a signal + % to \aboveenvbreak to insert \parskip glue after all. + % (Possibly there are other commands that could be followed by + % @example which need the same treatment, but not section titles; or + % maybe section titles are the only special case and they should be + % penalty 10001...) + \penalty 10001 \endgroup \itemxneedsnegativevskipfalse \else @@ -4272,12 +4297,15 @@ % start of the next paragraph will insert \parskip. % \def\aboveenvbreak{{% - \ifnum\lastpenalty < 10000 + % =10000 instead of <10000 because of a special case in \itemzzz, q.v. + \ifnum \lastpenalty=10000 \else \advance\envskipamount by \parskip \endgraf \ifdim\lastskip<\envskipamount \removelastskip - \penalty-50 + % it's not a good place to break if the last penalty was \nobreak + % or better ... + \ifnum\lastpenalty>10000 \else \penalty-50 \fi \vskip\envskipamount \fi \fi