unbalanced tag </mrow

[touhami]

When I try to compile the folloing MWE with the command make4ht -u myfile.tex "mathml, mathjax

\documentclass{article}
\usepackage{amsmath}

\begin{document}

\[\begin{cases} % no problem
x & x\in A\\
y & x\in B.
\end{cases}\]

\[\begin{cases}
x & x\in A\\
y & x\in ]a,b[.
\end{cases}\]

\[\begin{cases}
x & x\in ]a,b[\\
y & x\in B.
\end{cases}\]
\end{document}

I get a warning about unbalanced tag </mrow and the result of the last two formula is wrong.

[michal-h21]

You can try to use the mathml- option instead:

make4ht myfile.tex "mathml-,mathjax"

It uses slightly different configuration for brackets. Here are some more details.

[touhami]

Great. Is there a way to know when one should use this option or it's always ok.

off-topic: why did you write

make4ht myfile.tex "mathml-,mathjax"

and not

make4ht -u myfile.tex "mathml-,mathjax"

i mean why not -u? are you recommending it or just ignored?

[michal-h21]

I've just updated TeX4ht sources to use the relevant code from mathml- option by default for MathML output. So you should get correct result even with mathml option. The mathml- option produces code, that sometimes isn't that semantically correct and it may have wrong rendering. But this particular code seems to work well and should be really used by default, as it can fix lot of issues like this one.

The -u option is obsolete, because utf8 output is produced by default now.

[touhami]

Great. Thank you.

[michal-h21]

OK, so I hope we can close this for now :)