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

[Eli Zaretskii]

> From: Gerd Möllmann <gerd.moellmann@gmail.com>
> Cc: 58653@debbugs.gnu.org
> Date: Thu, 03 Nov 2022 13:13:22 +0100
> 
>   :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.

Are you building with -jN, i.e. in parallel?  Then what you see could
be the consequence of several processes writing simultaneously to the
same device.  If you use GNU Make, try adding the --output-sync=line
switch to the Make's command line.