GNU bug report logs - #58342
29.0.50; noverlay branch is O(N) for important calls

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Message #14 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: gerd.moellmann <at> gmail.com, matt <at> rfc20.org, bug-gnu-emacs <at> gnu.org,
 mail <at> andreas-politz.de
Subject: Re: 29.0.50; noverlay branch is O(N) for important calls
Date: Fri, 07 Oct 2022 09:36:50 -0400

Eli Zaretskii [2022-10-07 10:09:39] wrote:
>> [ Site note: `previous-overlay-change` is probably not very important in
>>   practice, but `next-overlay-change` OTOH is indeed important because
>>   it's used during redisplay.
> previous-overlay-change is also called by redisplay (but I didn't see
> how frequently), at least if you look at the code from the static
> analysis POV.

Do you happen to know via which path it can be called (beside the obvious
ones when the redisplay ends up calling ELisp, such as via jit-lock)?


        Stefan

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