bug#58653: 29.0.50; Long lines in *compilation* buffer

[Gerd Möllmann]

Gerd Möllmann <gerd.moellmann@gmail.com> writes:

> I had some fun, and it gets even a bit weirder: The missing text doesn't
> seem to be lost at all, it's just somewhere else.  Example:
>
>   :22: warning: 'sprintf' is deprecated: ...
>
> This should actually be xdisp.c:22:...
>
> The xdisp.c can be found above that warning as part of a long line
>
>   ebrew/Cellar/libidn2/2.3.4/include -isystem
>   /opt/homebrew/Cellarxdisp.cAWK=awk ./mapconv glibc/IBM857.gz '/^<.*[
>                       ^^^^^^^                   
>
> And the newline before "AWK=" is probably also somewhere else.
>
> That's a start :-/.

Exactly the same happens when building in M-x shell.  And it doesn't
happen in a Terminal window.