[tex4ht] [bug #601] babel spanish and htlatex mathml have bad ineraction

[Matteo Gamboz]

URL:
  <http://puszcza.gnu.org.ua/bugs/?601>

                 Summary: babel spanish and htlatex mathml have bad ineraction
                 Project: tex4ht
            Submitted by: gamboz
            Submitted on: Fri May 19 21:15:14 2023
                Category: None
                Priority: 5 - Normal
                Severity: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

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Details:

Compiling the following source with
`htlatex x.tex xhtml,mathml`

gives error
`! TeX capacity exceeded, sorry [parameter stack size=20000].`

```latex
%% File x.tex
\documentclass{article}
\usepackage[spanish]{babel}
\begin{document}
\selectlanguage{spanish}
La desinformación
\end{document}

The problem seems related to some interaction between "mathml" and "spanish".

It happens compiling with
htlatex x.tex xhtml,mathml
htlatex x.tex  html,mathml

It does not happen compiling with
htlatex x.tex xhtml
htlatex x.tex  html

and it does not happen for many other languages.
E.g. it does not happen if the tex source contains:
\usepackage[LANGUAGE]{babel}
...
\selectlanguage{LANGUAGE}
for LANGUAGE in british, french, brazil, portugese, italian, german






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