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% $Id: DEoptions.sty 574 2011-09-05 08:17:17Z herbert $
% Copyright 2011 by Herbert Voss
%
% This file may be distributed and/or modified
%
% 1. under the LaTeX Project Public License and/or
% 2. under the GNU Public License.
%
% See the file doc/licenses/LICENSE for more details.
\RequirePackage{keyval}[1997/11/10]
\def\ProcessOptionsExa{%
\let\@tempa\@empty
\ifx\@currext\@clsextension%
\else
\@for\CurrentOption:=\@classoptionslist\do{%
\@ifundefined{KV@\@currname @\CurrentOption}%
{}{\edef\@tempa{\@tempa,\CurrentOption,}}}%
\fi
\edef\@tempa{%
\noexpand\setkeys{\@currname}{\@tempa\@ptionlist{\@currname.\@currext}}}%
\let\exa@origkverr\KV@err%
\ifx\@currext\@clsextension\let\KV@errx=\@gobble\fi% never mind
\@tempa%
\let\KV@err\exa@origkverr%
\AtEndOfPackage{\let\@unprocessedoptions\relax}}
\def\ExecuteOptionsExa#1{\setkeys{\@currname}{#1}}
\def\DeclareOptionExa#1{\@ifnextchar[{\exa@dokv{#1}}{\exa@dokv{#1}[]}}
\long\def\exa@dokv#1[#2]#3{\define@key{\@currname}{#1}[{#2}]{#3}}
\def\exa@filterclassoptions{%
\def\exa@filteredclassoptionslist{}
\@for\CurrentOption:=\@classoptionslist\do{%
\ifx\CurrentOption\@empty\else
\@expandtwoargs\in@{=}{\CurrentOption}%
\ifin@
\else
\edef\exa@filteredclassoptionslist{%
\exa@filteredclassoptionslist,\CurrentOption}
\fi
\fi
}%
\let\@classoptionslist=\exa@filteredclassoptionslist%
}
\newcommand\defexaoption{\define@key{exa@option}}
\newcommand\setexaoption{\setkeys{exa@option}}
\endinput
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