% xr.4ht (2025-06-05-13:26), generated from tex4ht-4ht.tex
% Copyright 1997-2025 TeX Users Group
% Copyright 2009-2025 TeX Users Group
%
% This work 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
%   https://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.
%
% This work has the LPPL maintenance status "maintained".
%
% The Current Maintainer of this work
% is the TeX4ht Project <https://tug.org/tex4ht>.
%
% If you modify this program, changing the
% version identification would be appreciated.
\immediate\write-1{version 2025-06-05-13:26}

   \let\XR:loop=\XR@loop
\def\XR@loop#1{%
   \def\:temp##1.aux{\openin15=##1.xref
\ifeof15
   \:warning{missing ##1.xref for ##1.aux}%
   \let\:temp\empty
\else
   \def\:temp{\input ##1.xref}%
\fi
\closein15  \:temp
}%
   \catcode`\:=11
     \expandafter\ifx \csname xr:CrossWord\endcsname\relax
  \let\xr:CrossWord=\Cross:Word
  \def\Cross:Word##1##2{%
     \expandafter\let\csname  cw:\cw:format{##1##2}\endcsname\:UnDef
     \xr:CrossWord{##1}{##2}}%
\fi
%
     \:temp#1%
   \catcode`\:=12
   \XR:loop{#1}%
}
\ExplSyntaxOn
\long\def\XR@test#1#2#3#4\XR@{%
  \ifx#1\newlabel
     \regex_if_match:nnTF{@cref}{#2}% we must handle cleveref meta references
{\expandafter\xdef\csname r@\XR@prefix#2\endcsname{#3}}%
{\expandafter\xdef\csname r@\XR@prefix#2\endcsname{\XR:rEfLiNK #3}}%
%
  \else\ifx#1\@input
     \edef\XR@list{\XR@list#2\relax}%
  \fi\fi
  \ifeof\@inputcheck\expandafter\XR@aux
  \else\expandafter\XR@read\fi}
\ExplSyntaxOff

   \def\XRrEfLiNK[#1]#2#3{%
  \filename@parse{#1}% Get basename of the linked html file,
  % xr:dir\filename@base contains file's directory
  \a:xr[\csname xr:dir:\filename@base\endcsname#1]{#2}{}%
   \ifx\hyperrefLabel\:UnDef #3\else \hyperrefLabel\fi \b:xr}
\NewConfigure{xr}{2}
\Configure{xr}{\Link}{\EndLink}
\def\XR:rEfLiNK#1#2{{\xr:rEfLiNK#1}{\xr:rEfLiNK#2}}
\def\xr:rEfLiNK#1#2{\noexpand\XRrEfLiNK[\Get:HFile#2-]{#2}}
\def\Get:HFile#1-#2-{\:LikeRef{)F\:gobble #1F-}}

\Hinput{xr}
\endinput

