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% ctexart-hooks.4ht (2022-06-14-13:41), generated from tex4ht-4ht.tex
% Copyright 2022 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
%   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.
%
% This work has the LPPL maintenance status "maintained".
%
% The Current Maintainer of this work
% is the TeX4ht Project <http://tug.org/tex4ht>.
%
% If you modify this program, changing the
% version identification would be appreciated.
\immediate\write-1{version 2022-06-14-13:41}

\ExplSyntaxOn

% prevent multiple execution of this file
\ifdefined\l_save_engine_str\endinput\fi
\str_new:N \l_save_engine_str
% stop processing if the engine is pdftex, we want to change processing only for LuaTeX
\def\l_save_engine_str{pdftex}
\str_if_eq:NNTF \c_sys_engine_str\l_save_engine_str{\ExplSyntaxOff\endinput}{}

% the luatexja package causes fatal error
\:dontusepackage{luatexja}

% fix compilation errors
\AddToHook{package/ctexhook/after}{
  % don't let ctex to insert any files
  \cs_set:Npn \ctex_file_input:n #1{}
  % define some macros that are declared in the input files, and which are needed in the class
  \cs_set:Npn \ctex_add_to_selectfont:n #1{}
  \dim_new:N \ccwd
  \skip_new:N \l__ctex_ccglue_skip
  \cs_set_protected:Npn \ctex_update_em_unit:
  { \dim_set:Nn \ccwd { \f@size \p@ } }
  \cs_set_protected:Npn \ctex_update_ccglue: {}
}

\ExplSyntaxOff
\endinput