From: Eli Zaretskii <eliz@gnu.org>
To: Mark Laws <mdl@60hz.org>
Cc: 28795@debbugs.gnu.org
Subject: bug#28795: 25.2; UTF-8 language environment causes extreme sluggishness
Date: Thu, 12 Oct 2017 12:31:22 +0300 [thread overview]
Message-ID: <83infkn251.fsf@gnu.org> (raw)
In-Reply-To: <86376oiv5i.fsf@60hz.org> (message from Mark Laws on Thu, 12 Oct 2017 18:15:53 +0900)
> From: Mark Laws <mdl@60hz.org>
> Date: Thu, 12 Oct 2017 18:15:53 +0900
>
> M-x set-language-environment UTF-8
On Windows, doing this is a mistake (but not because it causes
sluggish redisplay).
> M-: (insert #x2207)
>
> Then hold down C-o until you have a bunch of empty lines, and start moving
> around the buffer with the usual movement keys. You will notice it is very,
> very slow. Then delete the character from the buffer, and notice how things are
> fast again.
I cannot reproduce this here. What font is used to display that
character? You can find this out with "C-u C-x =" with the cursor on
the character.
On my system, I have the Symbola font installed, which is used for
displaying this character, and the problem doesn't happen.
As another thing to try, set inhibit-compacting-font-caches to a
non-nil value, and see if that helps.
next prev parent reply other threads:[~2017-10-12 9:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-12 9:15 bug#28795: 25.2; UTF-8 language environment causes extreme sluggishness Mark Laws
2017-10-12 9:31 ` Eli Zaretskii [this message]
[not found] ` <CADemMPPf-S8XpYJygf5DUYKB7txbHNtjNE+GJORtZLkZbsDkaQ@mail.gmail.com>
2017-10-12 10:00 ` Eli Zaretskii
2017-10-12 10:31 ` Mark Laws
2017-10-12 11:55 ` Eli Zaretskii
2017-10-12 12:17 ` Mark Laws
2017-10-12 12:37 ` Eli Zaretskii
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