From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: gerd.moellmann@gmail.com, matt@rfc20.org, 58342@debbugs.gnu.org,
mail@andreas-politz.de
Subject: bug#58342: 29.0.50; noverlay branch is O(N) for important calls
Date: Sat, 08 Oct 2022 09:08:02 -0400 [thread overview]
Message-ID: <jwvh70e31tv.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <83zge6ltto.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 08 Oct 2022 09:20:51 +0300")
>> Does anybody know of an Emacs package that uses a large number of
>> overlays that span large amounts of the buffer in complex ways?
>
> What are those "complex ways" you are talking about?
>
> In general, Isearch can potentially produce thousands of overlays,
> especially if you do that in a buffer where lines are truncated. But
> I don't know if that's what you are looking for.
>
> linum.el is another potential example: it produces an overlay for each
> line.
For the potential performance problem with next-overlay-change to appear
you need overlays to overlap, so not something like linum or nhexl-mode.
Maybe a package which places an overlay over every pair of matched
parentheses in a Lisp buffer?
Stefan
next prev parent reply other threads:[~2022-10-08 13:08 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-06 23:25 bug#58342: 29.0.50; noverlay branch is O(N) for important calls Matt Armstrong
2022-10-07 1:12 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-10-07 7:09 ` Eli Zaretskii
2022-10-07 13:36 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-10-07 13:57 ` Eli Zaretskii
2022-10-07 14:47 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-10-07 15:23 ` Matt Armstrong
2022-10-07 16:51 ` bug#58361: " Andreas Politz
2022-10-07 18:38 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-10-07 17:11 ` bug#58342: " Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-10-07 20:37 ` Matt Armstrong
2022-10-07 21:22 ` Drew Adams
2022-10-08 0:27 ` Drew Adams
2022-10-07 21:58 ` Dmitry Gutov
2022-10-08 6:20 ` Eli Zaretskii
2022-10-08 13:08 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2022-10-08 17:24 ` Drew Adams
2022-10-08 23:08 ` Matt Armstrong
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