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From: Mark Laws <mdl@60hz.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 28795@debbugs.gnu.org
Subject: bug#28795: 25.2; UTF-8 language environment causes extreme sluggishness
Date: Thu, 12 Oct 2017 19:31:57 +0900	[thread overview]
Message-ID: <CADemMPOC1C5isNcn4JwHfy5NQuvPshch45=XOUt5uhBSffr0Uw@mail.gmail.com> (raw)
In-Reply-To: <83h8v4n0so.fsf@gnu.org>

On Thu, Oct 12, 2017 at 7:00 PM, Eli Zaretskii <eliz@gnu.org> wrote:
> [Please keep the bug address on the CC list.]

Sorry, mashed the wrong key.

> And which font is used if you don't set your language-environment to
> UTF-8?

uniscribe:-outline-Malgun
Gothic-bold-normal-normal-sans-15-*-*-*-p-*-ksc5601.1987-0 (#xF7)

>> > As another thing to try, set inhibit-compacting-font-caches to a
>> > non-nil value, and see if that helps.
>>
>> This seems to help
>
> By "this" do you mean installing Symbola or setting
> inhibit-compacting-font-caches non-nil?

(setq inhibit-compacting-font-caches t) seems to help. I did not try Symbola.

>> though the fact it only happens due to changes with encoding and/or
>> font locking makes me suspicious.
>
> It could be that the default language-environment causes a different
> font to be used for that character.

If I use (prefer-coding-system 'utf-8), I do not get the slowness
anymore, even if inhibit-compacting-font-caches is nil, and even after
propertizing the text. However, the font changes from PragmataPro Mono
to Malgun Gothic, which seems odd too.

if I use both (set-locale-environment "English") and
(prefer-coding-system 'utf-8), the issue returns.

-- 
|v\ /\ |\ |< |_ /\ \^| //





  reply	other threads:[~2017-10-12 10:31 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
     [not found]   ` <CADemMPPf-S8XpYJygf5DUYKB7txbHNtjNE+GJORtZLkZbsDkaQ@mail.gmail.com>
2017-10-12 10:00     ` Eli Zaretskii
2017-10-12 10:31       ` Mark Laws [this message]
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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