GNU bug report logs - #57207
29.0.50; Fontification is slow after e7b5912b23 (Improvements to long lines handling)

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Message #227 received at 57207 <at> debbugs.gnu.org (full text, mbox):

From: Gregory Heytings <gregory <at> heytings.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: larsi <at> gnus.org, 57207 <at> debbugs.gnu.org, yantar92 <at> gmail.com
Subject: Re: bug#57207: 29.0.50; Fontification is slow after e7b5912b23
 (Improvements to long lines handling)
Date: Sun, 21 Aug 2022 11:43:41 +0000

>
> Narrowing inside redisplay itself is okay, provided that it's undone 
> before we call redisplay_mode_lines.
>

I pushed a potential fix to the feature branch.  Does that look correct to 
you?  It seems to me (but I could very well be wrong) that if we use the 
actual narrowing bounds inside decode_mode_spec, the mode line will 
contain the correct information.  Another way to do it would be to unset 
and reset the locked narrowing for each buffer in the loop inside 
redisplay_mode_lines, I think.

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