Compiling errors with latest TL update when upcasing some Greek literals.

[Joseph Wright]

On 29/06/2023 08:54, Günter Milde wrote:
> 
> Dear TeXLive maintainers,
> 
> After an update of TL23 with tlshell on 2023-06-21, the following 
> example says
> ! Missing = inserted for \ifnum. under pdflatex, xelatex, and lualatex.
> 
> ~~~
> \documentclass[a4paper]{article}
> 
> \ifdefined \UnicodeEncodingName
>    \usepackage{fontspec}
>    \setmainfont{FreeSerif}
> \fi
> 
> \usepackage[greek,english,provide*=*]{babel}
> 
> \begin{document}
> 
> \foreignlanguage{greek}{ᾂ}
> 
> \foreignlanguage{greek}{\MakeUppercase{ᾂ}}
> 
> \end{document}
> ~~~
> 
> The problem was reported to the LaTeX team
> https://github.com/latex3/latex3/issues/1236
> and fixed in commit
> https://github.com/latex3/latex3/commit/ebff6bde8026908f1ddaf657d43e030a31f59e36
> 
> Unfortunatly, the fix does not seem to have made it into TexLive yet.
> After another update with tlshell today 2023-06-29, the problem persists.
> (With pdfLaTeX, format version 2023-06-01 patch-level 1, and the L3 
> programming layer from 2023-06-16)
> 
> Do I need just some more patience, am I missing something, or is there 
> some step required from the side of the LaTeX3 team?
> 
> Sincerely
> Günter Milde
> 
> (babel-greek and greek-fontenc maintainer)
> 

It's not released yet.

Joseph