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

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Package: emacs;

Reported by: Gregory Heytings <gregory <at> heytings.org>

Date: Thu, 21 Jul 2022 18:01:01 UTC

Severity: normal

Done: Gregory Heytings <gregory <at> heytings.org>

Bug is archived. No further changes may be made.

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Message #1015 received at 56682 <at> debbugs.gnu.org (full text, mbox):

From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Gregory Heytings <gregory <at> heytings.org>,
 Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 56682 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>
Subject: Re: bug#56682: Fix the long lines font locking related slowdowns
Date: Fri, 5 Aug 2022 15:21:24 +0300

On 05.08.2022 15:16, Gregory Heytings wrote:
> 
>>> If and when it is solved, we could revisit this issue.
>>
>> The locked narrowing currently in effect makes it impossible to 
>> investigate this problem or improve the behavior :-(
>>
> 
> How so?  It is fully backward compatible, just (setq long-line-threshold 
> nil).  If what you want is only to remove the locked narrowing, comment 
> out the relevant line in xdisp.c.

That brings back the performance problems in redisplay, which have a 
more pronounced effect, overshadowing both issues and potential 
improvements in font-lock.
This bug report was last modified 2 years and 8 days ago.

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