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

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Message #2283 received at 56682 <at> debbugs.gnu.org (full text, mbox):

From: Gregory Heytings <gregory <at> heytings.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 56682 <at> debbugs.gnu.org, monnier <at> iro.umontreal.ca, akrl <at> sdf.org
Subject: Re: bug#56682: feature/improved-locked-narrowing 9dee6df39c: Reworked
 locked narrowing.
Date: Tue, 14 Feb 2023 22:50:24 +0000

[Message part 1 (text/plain, inline)]

>> Fwiden in the functions above (which are AFAICS the only places in 
>> Emacs where Fwiden is called) is not prepared to the possibility of 
>> them being called inside a labeled narrowing, either one installed by 
>> the long lines code, or another one.  Basically we need to use a 
>> variant of reset_outermost_narrowings (for the current buffer only) 
>> where we use
>>
>> record_unwind_protect (save_restriction_restore, save_restriction_save ());
>
> Ah, okay.  Please do, and thanks.
>

And here's the patch!

[Remove-narrowing-locks-before-calling-Fwiden.patch (text/x-diff, attachment)]

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