bug#58558: 29.0.50; re-search-forward is slow in some buffers

[Eli Zaretskii]

> Cc: 58558@debbugs.gnu.org, acm@muc.de, yantar92@posteo.net, larsi@gnus.org
> Date: Thu, 13 Apr 2023 07:52:43 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> 
> > From: Stefan Monnier <monnier@iro.umontreal.ca>
> > Cc: Alan Mackenzie <acm@muc.de>,  Eli Zaretskii <eliz@gnu.org>,
> >   larsi@gnus.org,  58558@debbugs.gnu.org
> > Date: Wed, 12 Apr 2023 19:23:19 -0400
> > 
> > > For the former, we could probably extend the `b_property` and
> > > `e_property` fields of `gl_state` (which hold charpos) to also store
> > > their bytepos equivalent, which should significantly reduce the number
> > > of conversions between bytepos and charpos.
> > 
> > I.e. something like the patch below (which passes all tests except for
> > `test/src/comp-tests` for a reason that completely escapes me).
> 
> Andrea, could you please help Stefan with that test failure?

No need, as Stefan has found the problem.

Thanks anyway.