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Editing File: /usr/share/texmf/tex/texinfo/texinfo-ja.tex

% texinfo-ja.tex -- Japanese texinfo.tex loader
% Some CJK packages are necessary to load before texinfo.tex.
%
% Copyright 2016, 2017 Free Software Foundation, Inc.
%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 3 of the license, or (at
% your option) any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program.  If not, see <http://www.gnu.org/licenses/>.
%
% Written by Masamichi Hosoda, 6 May 2016, <trueroad@trueroad.jp>

%
% For LuaTeX
%
\ifx\luatexversion\thisisundefined
\else
  % LuaTeX 0.95+ is required.
  \ifnum\luatexversion<95
    \errmessage{LuaTeX 0.95+ is required}
  \fi
  % LuaTeX-ja: Typeset Japanese with Lua(La)TeX
  % http://www.ctan.org/tex-archive/macros/luatex/generic/luatexja
  \openin 1 luatexja.sty \ifeof 1
    \errmessage{LuaTeX-ja is not found.
    It is required for Japanese Texinfo files with LuaTeX.
    http://www.ctan.org/tex-archive/macros/luatex/generic/luatexja
    It might be contained in texlive-lang-japanese package}
  \else
    \input luatexja.sty
    \def\txijapackage{LaTeX-ja}
  \fi
\fi

%
% For XeTeX
%
\ifx\XeTeXrevision\thisisundefined
\else
  % XeTeX 0.9998+ is required.
  \ifnum\strcmp{\the\XeTeXversion\XeTeXrevision}{0.9998}<0
    \errmessage{XeTeX 0.9998+ is required}
  \fi
  % zhspacing: Spacing for mixed CJK-English documents in XeTeX
  % http://www.ctan.org/tex-archive/macros/xetex/generic/zhspacing
  %
  % This package is originally for Chinese,
  % but can also used in Japanese.
  %
  \openin 1 zhspacing.sty \ifeof 1
    \errmessage{zhspacing is not found.
    It is required for Japanese Texinfo files with XeTeX.
    http://www.ctan.org/tex-archive/macros/xetex/generic/zhspacing
    It might be contained in texlive-lang-chinese.
    (This package is for Chinese, but can also used in Japanese)}
  \else
    \def\zhfont{dummy} % Cancel the request of SimSun font
    \def\zhpunctfont{dummy} % Cancel the request of SimSun font
    \input zhspacing.sty
    \zhspacing
    \def\txijapackage{zhspacing}
  \fi
\fi

%
% For others
%
\ifx\luatexversion\thisisundefined
  \ifx\XeTeXrevision\thisisundefined
    \errmessage{The TeX engine is not LuaTeX / XeTeX.
    LuaTeX / XeTeX is required for Japanese Texinfo files}
  \fi
\fi

% Original texinfo.tex
\input texinfo.tex

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