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+%%
+%% This is file `ifoption.sty',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% ifoption.dtx
+%%
+%%% ====================================================================
+%%% @LaTeX-doc-source-file{
+%%% filename = "ifoption.dtx",
+%%% version = "1.02",
+%%% date = "2002/03/04",
+%%% time = "16:33:16 EST",
+%%% author = "Michael J Downes",
+%%% address = "American Mathematical Society,
+%%% Publications Technical Group,
+%%% PO Box 6248,
+%%% Providence, RI 02940,
+%%% USA",
+%%% email = "tech-support@ams.org",
+%%% URL = "http://www.ams.org/",
+%%% abstract = "",
+%%% checksum = "06695 170 563 5432",
+%%% docstring = "The checksum field, produced by Robert Solovay's
+%%% checksum utility, gives CRC-16 checksum, lines,
+%%% words, and characters.",
+%%% }
+%%% ====================================================================
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{ifoption}[2002/03/04 v1.02]
+\let\@xp\expandafter \let\@nx\noexpand
+\def\@True{00}
+\def\@False{01}
+\def\CurrentPackage{\@currname}
+\let\CurrentClass\CurrentPackage
+\newcommand{\IfOption}{}
+\def\IfPackageOption{\@ifpackagewith}
+\def\IfClassOption{\@ifclasswith}
+\def\IfOption{%
+ \ifx\@currext\@pkgextension \@xp\IfPackageOption
+ \else \@xp\IfClassOption
+ \fi
+ \@currname
+}
+\newcommand{\DeclareExclusiveOptions}[1]{%
+ \xdef\@declaredoptions{\@declaredoptions,#1}%
+ \gdef\ProcessExclusiveOptions{\relax}%
+ \@for\CurrOption:=#1\do{%
+ \@xp\deo@a\csname ds@\CurrOption\@xp\endcsname\@xp{\CurrOption}{#1}%
+ }%
+}
+\def\DeclareBooleanOption{\DeclareExclusiveOptions}
+\def\deo@a#1#2#3{%
+ \def#1{%
+ \g@addto@macro\ProcessExclusiveOptions{\OptionsFalseTrue{#3}{#2}}%
+ }%
+}
+\def\cull@options#1,{%
+ \@xp\ifx\csname ds@#1\@gobble\@percentchar\@empty\endcsname\@False
+ \else #1,\fi
+ \cull@options
+}
+
+\newcommand{\OptionsFalseTrue}[2]{%
+ \begingroup
+ \@for\CurrentOption:=#1\do{%
+ \@xp\let\csname ds@\CurrentOption\endcsname\@False
+ }%
+ \let\ds@\@False
+ \@xp\xdef\csname opt@\@currname.\@currext\endcsname{%
+ \@xp\@xp\@xp\cull@options\csname opt@\@currname.\@currext\endcsname
+ ,\@firstoftwo\@firstoftwo,#2%
+ }%
+ \endgroup
+}
+\endinput
+%%
+%% End of file `ifoption.sty'.