regression in TeX Live 2023 concerning some math characters

Ulrike Fischer news3 at
Thu Nov 23 17:38:50 CET 2023

Am Thu, 23 Nov 2023 16:20:58 +0100 schrieb Vincent Lefevre:

>> You can put \listfiles above \documentclass and the log will contain
>> versions of all files used. You can then look for changes.
> First, I confirm that everything is fine on the same machine
> with the current upstream TeX Live (which I've installed
> with info from
>  *File List*
>  article.cls    2023/05/17 v1.4n Standard LaTeX document class
>   size10.clo    2023/05/17 v1.4n Standard LaTeX file (size option)
> l3backend-pdftex.def    2023-11-09 L3 backend support: PDF output (pdfTeX)

I doubt that this files really matter. 

Are you using the same pdftotext to extract the text?

If you add 
to the begin and recompile you get uncompressed PDFs and can try to
diff them. Are then any differences in the ToUnicode?

Ulrike Fischer

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