GNU bug report logs - #30539
26.0; `char-displayable-p' is much slower in Emacs 25 and 26

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Package: emacs;

Reported by: Drew Adams <drew.adams <at> oracle.com>

Date: Mon, 19 Feb 2018 22:09:02 UTC

Severity: minor

Found in version 26.0

Done: Stefan Kangas <stefan <at> marxist.se>

Bug is archived. No further changes may be made.

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Message #41 received at 30539 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: npostavs <at> gmail.com, 30539 <at> debbugs.gnu.org
Subject: Re: bug#30539: 26.0;
 `char-displayable-p' is much slower in Emacs 25 and 26
Date: Wed, 18 Nov 2020 19:21:46 +0200

> From: Stefan Kangas <stefan <at> marxist.se>
> Date: Wed, 18 Nov 2020 07:35:06 -0800
> Cc: 30539 <at> debbugs.gnu.org
> 
> > Doing (setq inhibit-compacting-font-caches t) brings back reasonable
> > performance.
> >
> > I can't reproduce on my GNU/Linux box, although that may just be due to
> > different fonts installed.  In particular, char-displayable-p never gave
> > me nil.
> 
> Given this change:
> 
> commit f34f49f35e5c000a6ee070678f43d2ca38b76cad
> Author: Eli Zaretskii <eliz <at> gnu.org>
> Date:   Sat Sep 7 12:26:08 2019 +0300
> 
>     Set inhibit-compacting-font-caches to t by default on MS-Windows
> 
> Is there anything left to do here, or should this bug be closed?

If the problem doesn't happen on GNU/Linux, we can close this.
This bug report was last modified 4 years and 180 days ago.

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