bug#81648: 32.0.50; Running LaTeX on files with non-ASCII chars in the name

> From: Arash Esbati <[email protected]>
> Cc: [email protected],  [email protected]
> Date: Tue, 18 Aug 2026 15:19:01 +0200
> 
> > If you understand what happens here enough to conclude this is an
> > Emacs bug, would you mind describing what happens when you type
> > "C-c C-c RET", in a way that gives us some hint why this could be
> > an Emacs issue?
> 
> I'm not familiar enough with the internals of tex-mode.el and what
> happens after hitting "C-c C-c RET", but after having another look, I
> think that the current invokation:
> 
>   pdflatex  \\nonstopmode\\input \ä.tex
> 
> should be:
> 
>   pdflatex  \\nonstopmode\\input \\detokenize{ä}.tex

I know next to nothing about LaTeX, so can you please explain what
does detokenize do and why do you think it is needed in this case?