bug#44941: 28.0.50; M-x grep, perhaps all asynch subprocesses

[Eli Zaretskii]

> Date: Mon, 30 Nov 2020 19:46:28 +0300
> From: Jean Louis <bugs@gnu.support>
> Cc: Andreas Schwab <schwab@linux-m68k.org>, 44941@debbugs.gnu.org,
>   rms@gnu.org
> 
> > > >> grep -a "$@" | cut -c -200
> > > >> 
> > > >> cut seems to be responsible for the problem by buffering output even 
> > > >> to a tty.
> > > >
> > > > Sounds like a useful feature to ask Grep developers to add it.
> > > 
> > > That feature already exists: stdbuf.
> > 
> > I'm not sure I understand: I meant the feature to limit the output
> > lines to a given column count.
> 
> Is it not this option for limiting?
> 
>       -m NUM, --max-count=NUM
>               Stop reading a  file after NUM matching  lines.  If the

No.  Please read the 'cut' documentation to see what does -c do there.