diff options
author | Karl Berry <karl@freefriends.org> | 2009-09-04 00:59:35 +0000 |
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committer | Karl Berry <karl@freefriends.org> | 2009-09-04 00:59:35 +0000 |
commit | acfe8d23f443df0daee4ef6929bbd905070110d0 (patch) | |
tree | e929349924e32224b588f76e3a36bee2a4037f8b /Master/texmf-dist/tex/latex/ltxmisc | |
parent | 8fda9c296233009102ded664a7386ef0f035a76b (diff) |
ifmtarg update (2sep09)
git-svn-id: svn://tug.org/texlive/trunk@15065 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/tex/latex/ltxmisc')
-rw-r--r-- | Master/texmf-dist/tex/latex/ltxmisc/ifmtarg.sty | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/Master/texmf-dist/tex/latex/ltxmisc/ifmtarg.sty b/Master/texmf-dist/tex/latex/ltxmisc/ifmtarg.sty deleted file mode 100644 index 1c489af34c2..00000000000 --- a/Master/texmf-dist/tex/latex/ltxmisc/ifmtarg.sty +++ /dev/null @@ -1,66 +0,0 @@ -% ifmtarg.sty -% -% Provides an if-then-else command for an empty macro argument -% (empty = zero or more spaces only) -% Use as \@ifmtarg{arg1}{Code for arg1 empty}{Code for arg1 not empty} -% -% author: Peter Wilson (CUA) -% (now at peter.r.wilson@boeing.com) -% Copyright Peter Wilson, 1996 -% Copyright Peter Wilson and Donald Arseneau, 2000 -% Released under the LaTeX Project Public License -% -% -\NeedsTeXFormat{LaTeX2e} -\ProvidesPackage{ifmtarg}[2000/03/24 v1.2 check for an empty argument] - -%% Commands by Donald Arseneau -\begingroup -\catcode`\Q=3 -\long\gdef\@ifmtarg#1{\@xifmtarg#1QQ\@secondoftwo\@firstoftwo\@nil} -\long\gdef\@xifmtarg#1#2Q#3#4#5\@nil{#4} -\long\gdef\@ifnotmtarg#1{\@xifmtarg#1QQ\@firstofone\@gobble\@nil} -\endgroup - -\endinput - -% -% The \@ifmtarg command takes 3 arguments and \@ifnotmtarg takes 2 arguments. -% \@ifnotmtarg is slightly more efficient when code is only required -% for a non-empty argument. -% -% Example usages: -% \newcommand{\isempty}{1]{% -% \@ifmtarg{#1}{\typeout{YES}}{\typeout{NO}}} -% -% \isempty{} -> YES -% \isempty{ } -> YES -% \isempty{E} -> NO -% \isempty{ E } -> NO -% -% \newcommand{\isnotempty}[1]{% -% \@ifnotmtarg{#1}{\typeout{YES}}} -% -% \isnotempty{} -> -% \isnotempty{ } -> -% \isnotempty{E} -> YES -% \isnotempty{ E } -> YES -% -% In an Email to me on 13 March 2000, Donald Arseneau pointed out some -% failings with my original definition of the \@ifmtarg command: -% \newcommand{\@ifmtarg}[3]{% -% \edef\@mtarg{\zap@space#1 \@empty}% -% \ifx\@empty\@mtarg\relax #2\else #3\fi} -% -% It works most of the time correctly but Donald showed that it can -% give unexpected results -% under conditions that I had not thought of. He suggested the coding -% that now appears in the package above for the \@ifmtarg and -% \@ifnotmtarg commands. For a discussion on detecting empty arguments -% see CTAN/info/aro-bend/answer.002 -% -% Peter W. -% - - - |