GNU bug report logs - #78520
31.0.50; Performance issue in dired+isearch with dired-isearch-filenames

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Message #48 received at 78520 <at> debbugs.gnu.org (full text, mbox):

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: spacibba <at> aol.com, 78520 <at> debbugs.gnu.org, juri <at> linkov.net
Subject: Re: bug#78520: 31.0.50; Performance issue in dired+isearch with
 dired-isearch-filenames
Date: Sun, 25 May 2025 22:38:03 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

> Thanks.  I guess this means users of this feature will have to live
> with the slowdown.

Probably.  We could, of course, try to improve things a bit.

I don't recall all cases where this slow kind of doing things is
necessary.  Do you, Juri?

Maybe it would be possible to use a faster, but equivalent, algorithm
when possible, e.g. whenever using a non-regexp filename search.  I have
been experimenting with this approach locally, but I don't know if I'm
breaking any use cases.  It might be worth trying at least - the
performance in large buffers can be a pain.


Michael.

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