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authorKarl Berry <karl@freefriends.org>2009-09-04 00:59:35 +0000
committerKarl Berry <karl@freefriends.org>2009-09-04 00:59:35 +0000
commitacfe8d23f443df0daee4ef6929bbd905070110d0 (patch)
treee929349924e32224b588f76e3a36bee2a4037f8b /Master/texmf-dist/tex/latex/ltxmisc
parent8fda9c296233009102ded664a7386ef0f035a76b (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.sty66
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
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--- a/Master/texmf-dist/tex/latex/ltxmisc/ifmtarg.sty
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@@ -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.
-%
-
-
-