diff options
author | Karl Berry <karl@freefriends.org> | 2012-07-23 22:06:28 +0000 |
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committer | Karl Berry <karl@freefriends.org> | 2012-07-23 22:06:28 +0000 |
commit | f7191a3abc2d21dd2a71306921870243953794f3 (patch) | |
tree | 0672f5b17f2032f03e1a51d1dad1e06d80879ec1 /Master/texmf-dist/tex/texinfo | |
parent | 1bffdb6270a480f703a7978b526a423b26998a5e (diff) |
sync
git-svn-id: svn://tug.org/texlive/trunk@27123 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/tex/texinfo')
-rw-r--r-- | Master/texmf-dist/tex/texinfo/texinfo.tex | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/Master/texmf-dist/tex/texinfo/texinfo.tex b/Master/texmf-dist/tex/texinfo/texinfo.tex index a5a7b2beac7..2b646dd671c 100644 --- a/Master/texmf-dist/tex/texinfo/texinfo.tex +++ b/Master/texmf-dist/tex/texinfo/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{2012-06-05.14} +\def\texinfoversion{2012-07-03.16} % % Copyright 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995, % 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, @@ -4206,7 +4206,7 @@ end } \def\ifsetfail{\doignore{ifset}} -% @ifclear VAR ... @end ifclear reads the `...' iff VAR has never been +% @ifclear VAR ... @end executes the `...' iff VAR has never been % defined with @set, or has been undefined with @clear. % % The `\else' inside the `\doifset' parameter is a trick to reuse the @@ -4217,6 +4217,35 @@ end \def\ifclear{\parsearg{\doifset{\else \let\next=\ifclearfail}}} \def\ifclearfail{\doignore{ifclear}} +% @ifcommandisdefined CMD ... @end executes the `...' if CMD (written +% without the @) is in fact defined. We can only feasibly check at the +% TeX level, so something like `mathcode' is going to considered +% defined even though it is not a Texinfo command. +% +\makecond{ifcommanddefined} +\def\ifcommanddefined{\parsearg{\doifcmddefined{\let\next=\ifcmddefinedfail}}} +% +\def\doifcmddefined#1#2{{% + \makevalueexpandable + \let\next=\empty + \expandafter\ifx\csname #2\endcsname\relax + #1% If not defined, \let\next as above. + \fi + \expandafter + }\next +} +\def\ifcmddefinedfail{\doignore{ifcommanddefined}} + +% @ifcommandnotdefined CMD ... handlded similar to @ifclear above. +\makecond{ifcommandnotdefined} +\def\ifcommandnotdefined{% + \parsearg{\doifcmddefined{\else \let\next=\ifcmdnotdefinedfail}}} +\def\ifcmdnotdefinedfail{\doignore{ifcommandnotdefined}} + +% Set the `txicommandconditionals' variable, so documents have a way to +% test if the @ifcommand...defined conditionals are available. +\set txicommandconditionals + % @dircategory CATEGORY -- specify a category of the dir file % which this file should belong to. Ignore this in TeX. \let\dircategory=\comment |