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%% This is file `xindex.sty',
%%
%% Copyright (C) 2018-2021
%% Herbert Voss
%%
%% It may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%% The latest version of this license is in
%% http://www.latex-project.org/lppl.txt
%% and version 1.3c or later is part of all distributions of LaTeX
%% version 2005/12/01 or later.
%
% $Id: xindex.sty 836 2018-11-11 20:22:56Z herbert $
%
% -------------------------------------
\ProvidesPackage{xindex}[2018/11/11 v. 0.02 write into an idx file (hv)]
%
\RequirePackage{xkeyval}
\newif\if@@imakeidx \@@imakeidxfalse
\DeclareOptionX{imakeidx}{\@@imakeidxtrue}
\DeclareOptionX*{\PassOptionsToPackage\CurrentOption{imakeidx}}
\ProcessOptionsX\relax
\@ifpackageloaded{imakeidx}{}{% imakeidx already loaded?? if not then define ...
\newif\ifimki@startedidx
\newif\ifimki@splitindex
}
\if@@imakeidx
\typeout{xindex: Using package imakeidx}%
\RequirePackage{imakeidx}
\def\imki@progdefault{xindex}
\def\imki@program{xindex}
%
\def\imki@@startidxsplit#1{%
\if@filesw
\def\index{\@bsphack
\@ifnextchar [{\@index}{\@index[\imki@jobname]}}
\expandafter\newwrite\csname #1@idxfile\endcsname
\immediate\openout \csname #1@idxfile\endcsname #1.idx\relax
\def\writeidx##1{\write\expandafter\csname #1@idxfile\endcsname{\noexpand##1}}%
\typeout{Writing index file #1.idx}%
\fi
}
\global\imki@startedidxfalse
\def\imki@@startidxunique#1{%
\if@filesw
\ifimki@startedidx\else
\newwrite\@indexfile
\immediate\openout\@indexfile\imki@jobname.idx%
\def\writeidx##1{\write\@indexfile{\noexpand##1}}%
\global\imki@startedidxtrue
\fi
\def\index{\@bsphack
\@ifnextchar [{\@index}{\@index[\imki@jobname]}}
\expandafter\let\csname #1@idxfile\endcsname\@empty
\typeout{Started index file #1}%
\fi
}
%
\ifimki@splitindex
\let\imki@startidx\imki@@startidxunique
\else
\let\imki@startidx\imki@@startidxsplit
\fi
\else
\typeout{xindex: Using package makeidx}%
\RequirePackage{makeidx}
\def\writeidx#1{\write\@indexfile{\noexpand#1}}
\fi
\endinput
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