Add LuaMML sockets for eqnarray

[zauguin]

Not entirely sure where to add these. So we want to keep this in latex-lab or should the sockets be added directly in base/ltmath?

Internal housekeeping

Status of pull request

• Feedback wanted

Checklist of required changes before merge will be approved

• Test file(s) added
• Version and date string updated in changed source files
• Relevant \changes entries in source included
• Relevant changes.txt updated
• Rollback provided (if necessary)?
• ltnewsX.tex (and/or latexchanges.tex) updated

[mbertucci47]

I think something more has to be done for fleqn.clo since that overwrites this definition.

[u-fischer]

When I activate structure elements, the labels are not really correct as they are outside of the table.

\DocumentMetadata
  {
    uncompress,
    tagging=on,
    tagging-setup={math/setup=mathml-SE},
  }
\documentclass{article}

\usepackage{unicode-math}

\begin{document}

\begin{eqnarray}
A&=&B\\
D&=&C
\end{eqnarray}

\end{document}

I get also warnings:

Package tagpdf Warning: structure with label 0 is unknown rerun


Package tagpdf Warning: structure with label 0 is unknown rerun

(I tried also with the luamml-dev).

[zauguin]

@u-fischer I forgot to push, but with latex3/luamml@732e0fb the structure tree looks reasonable.

[u-fischer]

It needs a luamml update and then it is fin imho

[github-actions]

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