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I believe I found a bug that has hit texlive-base (2022.20221123-1) in Debian Sid yesterday according to Changelog. Consider this minimal example:

$ cat test.tex
\documentclass{article}
\usepackage{mathfont}
\begin{document}
\end{document}
$ lualatex test.tex
...
(./test.tex
LaTeX2e <2022-11-01>
 L3 programming layer <2022-11-02>
(/usr/share/texlive/texmf-dist/tex/latex/base/article.cls
Document Class: article 2022/07/02 v1.4n Standard LaTeX document class
(/usr/share/texlive/texmf-dist/tex/latex/base/size10.clo))
(/usr/share/texlive/texmf-dist/tex/latex/mathfont/mathfont.sty
(/usr/share/texlive/texmf-dist/tex/latex/base/atveryend-ltx.sty)
! Argument of \M@p@tch@decl@re has an extra }.
...

Neither mathfont nor its only dependency atveryend have been updated recently as far as I can tell.

I'd like to file a bug report, but I don't know where. Who should I contact in this case, and how do I find the correct person in general?

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6
  • texdoc mathfont. There's an email there
    – user202729
    Nov 28, 2022 at 10:36
  • Might be duplicate →incompatibility - What to do when a package conflicts with a development version of another one? - TeX - LaTeX Stack Exchange
    – user202729
    Nov 28, 2022 at 10:39
  • 1
    it is clearly in mathfont. It tries to patch a core LaTeX command, \DeclareSymbolFont, and that was changed in the latest release and so now the patch fails. That is a problem with such packages: they often rely on internals which can change.
    – Ulrike Fischer
    Nov 28, 2022 at 11:12
  • 2
    To be fair, most of the time there's no way to implement such things at all without relying on internals.
    – user202729
    Nov 28, 2022 at 11:17
  • 3
    If a change to the latex format affects a package it is also reasonable to log this as an issue at the latex2e github. It might be an unintentional change we can adjust or it might be we classify it as something for the package maintainer, but either way it is reasonable to report it, especially if a package maintainer is hard to reach.
    – David Carlisle
    Nov 28, 2022 at 14:16

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