bug#49043: 27.1: ibuffer-toggle-filter-group [BUGFIX]

[Eli Zaretskii]

> Date: Wed, 16 Jun 2021 13:01:08 -0400
> From: Boruch Baum <boruch_baum@gmx.com>
> Cc: larsi@gnus.org, 49043@debbugs.gnu.org
> 
> > > Another approach to consider would be to put bounds-checking in function
> > > delete-region against (point-min) and (point-max).
> >
> > delete-region already does include such checking, that's why you get
> > the backtrace: it signals an error.
> 
> You've missed the point.

Sorry about that.  Could you please point out what I missed?