[PATCH 1/4] * doc/texinfo-zh.tex: add Chinese support for texinfo.tex, only support XeTex now.

[Wu XiangCheng]

---
 ChangeLog          |  5 +++++
 doc/texinfo-zh.tex | 53 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 doc/texinfo-zh.tex

diff --git a/ChangeLog b/ChangeLog
index 5f82758323..71b6f26661 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2022-10-06  Wu XiangCheng  <bobwxc@yeah.net>
+
+       * doc/texinfo-zh.tex: add Chinese support for texinfo.tex, only
+       support XeTex now.
+
 2022-10-05  Patrice Dumas  <pertusus@free.fr>
 
        * tp/Texinfo/Common.pm, tp/Texinfo/Commands.pod,
diff --git a/doc/texinfo-zh.tex b/doc/texinfo-zh.tex
new file mode 100644
index 0000000000..2d4182e258
--- /dev/null
+++ b/doc/texinfo-zh.tex
@@ -0,0 +1,53 @@
+% texinfo-zh.tex -- Chinese 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/>.
+
+%
+% 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
+  \openin 1 zhspacing.sty \ifeof 1
+    \errmessage{zhspacing is not found.
+    It is required for Chinese Texinfo files with XeTeX.
+    http://www.ctan.org/tex-archive/macros/xetex/generic/zhspacing
+    It might be contained in texlive-lang-chinese.}
+  \else
+    \def\zhfont{dummy} % Cancel the request of SimSun font
+    \def\zhpunctfont{dummy} % Cancel the request of SimSun font
+    \input zhspacing.sty
+    \zhspacing
+    \def\txizhpackage{zhspacing}
+  \fi
+\fi
+
+%
+% For others
+%
+\ifx\XeTeXrevision\thisisundefined
+    \errmessage{The TeX engine is not XeTeX.
+    XeTeX is required for Chinese Texinfo files}
+\fi
+
+% Load original texinfo.tex
+\input texinfo.tex
-- 
2.30.2