Hi Yukai,
What is relevant is, "\thinspace" is now let to "\,". But the current
definition of "\,<space>" in latex.4ht (generated from tex4ht-4ht.tex) uses
"\thinspace",
\def\:tempc{\relax\ifmmode\csname a:,\endcsname\else\thinspace\fi}
\expandafter\HLet\csname , \endcsname=\:tempc
Therefore user input "\," now causes endless loop
"\," -> "\,<space>" -> "\thinspace" -> "\,<space>" -> loop
thanks for your report and analysis. I've fixed this issue in TeX4ht
sources. I've also added support for \, \; \: \! and \> in the text
mode, using adapted code from the LaTeX kernel.
This is the new code that should be put to latex.4ht:
\NewConfigure{;}{1}
\NewConfigure{!}{1}
\NewConfigure{:}{1}
\NewConfigure{,}{1}
\NewConfigure{>}{1}
\DeclareRobustCommand\:tmspace[2]{%
\ifmmode\expandafter\csname a:#1\endcsname%
\else\leavevmode@ifvmode\kern#2\fi\relax%
}
\DeclareRobustCommand\,{\:tmspace{,}{.16667em}}
\DeclareRobustCommand\;{\:tmspace;{.2777em}}
\DeclareRobustCommand\!{\:tmspace!{-.16667em}}
\DeclareRobustCommand\:{\:tmspace{:}{.2222em}}
\DeclareRobustCommand\>{\:tmspace;{.2222em}}
\let\thinspace\,
\let\medspace\:
\let\negthinspace\!
\let\thickspace\;
\Configure{,}{\mskip\thinmuskip}
\Configure{;}{\mskip\thickmuskip}
\Configure{!}{\mskip-\thinmuskip}
\Configure{:}{\mskip\medmuskip}
\Configure{>}{\mskip\medmuskip}
Best regards,
Michal
