GNU bug report logs - #56682
Fix the long lines font locking related slowdowns

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Message #2160 received at 56682 <at> debbugs.gnu.org (full text, mbox):

From: Gregory Heytings <gregory <at> heytings.org>
To: Dmitry Gutov <dgutov <at> yandex.ru>
Cc: 56682 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>,
 monnier <at> iro.umontreal.ca
Subject: Re: bug#56682: feature/improved-locked-narrowing 9dee6df39c: Reworked
 locked narrowing.
Date: Tue, 31 Jan 2023 15:17:57 +0000

>
> note that a significant part of the redisplay slowdowns wasn't caused by 
> font-lock, and thus the removal of locking will not regress those 
> performance improvements.
>

That is correct.

>
> And for those (potential?) cases where font-lock is a real problem for 
> performance, we could stop it from widening using an existing knob.
>

That is not correct.  There is no knob that can prevent a mode from 
widening.

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