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%% The LaTeX package tcolorbox - version 4.51 (2021/06/14)
%% tcbprocessing.code.tex: Code for conditional processing
%%
%% -------------------------------------------------------------------------------------------
%% Copyright (c) 2006-2021 by Prof. Dr. Dr. Thomas F. Sturm <thomas dot sturm at unibw dot de>
%% -------------------------------------------------------------------------------------------
%%
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3
%% 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 1.3 or later is part of all distributions of LaTeX
%% version 2005/12/01 or later.
%%
%% This work has the LPPL maintenance status `author-maintained'.
%%
%% This work consists of all files listed in README
%%
\tcb@set@library@version{4.51}
\RequirePackage{pdftexcmds}
\RequirePackage{shellesc}
\ifdefined\pdf@filemdfivesum\else% XeLaTeX presumed ...
\def\pdf@filemdfivesum#1{\mdfivesum file {#1}}%
\fi
\ifdefined\pdf@filemoddate\else% very poor XeLaTeX bypassing
\def\pdf@filemoddate#1{}%
\fi
\def\tcbproc@readmdfive#1#2{%
\edef\tcbprocmdfivesum{\pdf@filemdfivesum{#1}}%
\IfFileExists{#2}{\input{#2}}{\def\tcbproclastmdfivesum{}}%
}
\def\tcbproc@writemdfive#1{%
\tcb@allocate@tcb@out%
\immediate\openout\tcb@out=#1%
\immediate\write\tcb@out{\string\def\string\tcbproclastmdfivesum{\tcbprocmdfivesum}\@percentchar}%
\immediate\closeout\tcb@out%
}
\newrobustcmd{\iftcb@process@on}[3]{%
\tcbproc@readmdfive{#1}{#2}%
\ifdefstrequal{\tcbproclastmdfivesum}{\tcbprocmdfivesum}{}{\tcbproc@writemdfive{#2}}%
\expandafter\@firstoftwo%
}
\newrobustcmd{\iftcb@process@conditional}[3]{%
\tcbproc@readmdfive{#1}{#2}%
\ifdefstrequal{\tcbproclastmdfivesum}{\tcbprocmdfivesum}{%
\IfFileExists{#3}{%
\ifnum\pdf@strcmp{\pdf@filemoddate{#2}}{\pdf@filemoddate{#3}}>0\relax%
\expandafter\@firstoftwo%
\else%
\expandafter\@secondoftwo%
\fi%
}{\expandafter\@firstoftwo}%
}{%
\tcbproc@writemdfive{#2}%
\expandafter\@firstoftwo%
}%
}
\newrobustcmd{\iftcb@process@off}[3]{%
\tcbproc@readmdfive{#1}{#2}%
\ifdefstrequal{\tcbproclastmdfivesum}{\tcbprocmdfivesum}{}{\tcbproc@writemdfive{#2}}%
\expandafter\@secondoftwo%
}%
\newrobustcmd{\tcbiffileprocess}[1]{%
\ifcase\numexpr#1\relax%
\expandafter\iftcb@process@on%
\or%
\expandafter\iftcb@process@conditional%
\else%
\expandafter\iftcb@process@off%
\fi%
}
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