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%%^^A%% um-code-base.dtx -- part of UNICODE-MATH <wspr.io/unicode-math>
% \section{The \texttt{unicode-math.sty} loading file}
%
% The \texttt{unicode-math.sty} file is a stub which loads necessary packages
% and then bifurcates into a XeTeX- or LuaTeX-specific version of the package.
%
% \begin{macrocode}
%<*base>
% \end{macrocode}
% Bail early if necessary.
% \begin{macrocode}
\ifdefined\XeTeXversion
\ifdim\number\XeTeXversion\XeTeXrevision in<0.9998in%
\PackageError{unicode-math}{%
Cannot run with this version of XeTeX!\MessageBreak
You need XeTeX 0.9998 or newer.%
}\@ehd
\fi
\else\ifdefined\luatexversion
\ifnum\luatexversion<64%
\PackageError{unicode-math}{%
Cannot run with this version of LuaTeX!\MessageBreak
You need LuaTeX 0.64 or newer.%
}\@ehd
\fi
\else
\PackageError{unicode-math}{%
Cannot be run with pdfLaTeX!\MessageBreak
Use XeLaTeX or LuaLaTeX instead.%
}\@ehd
\fi\fi
% \end{macrocode}
%
% \paragraph{Packages}
% Assuming people are running up-to-date packages.
% \begin{macrocode}
\RequirePackage{expl3,xparse,l3keys2e}
\RequirePackage{fontspec}
\RequirePackage{ucharcat}
\RequirePackage{fix-cm} % avoid some warnings (still necessary? check...)
\RequirePackage{filehook}
% \end{macrocode}
% \paragraph{Bifurcate}
% \begin{macrocode}
\ExplSyntaxOn
\sys_if_engine_luatex:T { \RequirePackageWithOptions{unicode-math-luatex} }
\sys_if_engine_xetex:T { \RequirePackageWithOptions{unicode-math-xetex} }
\ExplSyntaxOff
% \end{macrocode}
%
% \begin{macrocode}
%</base>
% \end{macrocode}
\endinput
% /©
%
% ------------------------------------------------
% The UNICODE-MATH package <wspr.io/unicode-math>
% ------------------------------------------------
% This package is free software and may be redistributed and/or modified under
% the conditions of the LaTeX Project Public License, version 1.3c or higher
% (your choice): <http://www.latex-project.org/lppl/>.
% ------------------------------------------------
% Copyright 2006-2017 Will Robertson, LPPL "maintainer"
% Copyright 2010-2017 Philipp Stephani
% Copyright 2011-2017 Joseph Wright
% Copyright 2012-2015 Khaled Hosny
% ------------------------------------------------
%
% ©/
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