GNU bug report logs - #64391
30.0.50; buffer narrowing slowdown regression in emacs 29

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Message #26 received at 64391 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Mattias Engdegård <mattias.engdegard <at> gmail.com>
Cc: acohen <at> ust.hk, 64391 <at> debbugs.gnu.org, gregory <at> heytings.org
Subject: Re: bug#64391: buffer narrowing slowdown regression in emacs 29
Date: Sat, 01 Jul 2023 15:08:36 +0300

> From: Mattias Engdegård <mattias.engdegard <at> gmail.com>
> Date: Sat, 1 Jul 2023 13:37:08 +0200
> Cc: 64391 <at> debbugs.gnu.org,
>  Gregory Heytings <gregory <at> heytings.org>,
>  Eli Zaretskii <eliz <at> gnu.org>
> 
> 1 juli 2023 kl. 06.59 skrev Andrew Cohen <acohen <at> ust.hk>:
> 
> > Just for fun I simply commented it out (since the test code doesn't use
> > labeled restrictions) and ran the test code, and the problem disappears:
> 
> The attached patch combines narrow-to-region and internal--label-restriction into a single function, internal--narrow-to-region. (We could also add the label as an optional argument to narrow-to-region.)

It does more than that, so I'd appreciate a more detailed description
of the changes and their rationale.

Thanks.

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