From: Stefan Kangas <stefan@marxist.se>
To: Eli Zaretskii <eliz@gnu.org>
Cc: Max Shinn <max@maxshinnpotential.com>, 17261@debbugs.gnu.org
Subject: bug#17261: Some combining characters don't combine (Emacs 24 regression)
Date: Sat, 21 Sep 2019 11:51:02 +0200 [thread overview]
Message-ID: <CADwFkmn4cWHLtVTWRPkmCJ887dAs-6BqgpfN=rJSRRhumTNEJA@mail.gmail.com> (raw)
In-Reply-To: <20140413104944.1f919291@Newton>
Eli Zaretskii <eliz@gnu.org> writes:
>> Date: Sun, 13 Apr 2014 10:49:44 -0500
>> From: Max Shinn <max@maxshinnpotential.com>
>>
>> Certain combining characters---such as the combining vector
>> arrow (0x20D7, a⃗) and the combining circle (0x20DD, a⃝)---do not
>> combine properly under most fonts on Emacs 24.3.1 under Debian GNU/Linux
>> x86_64, GTK 3.4.2. In Emacs 23.3.1, these characters worked properly
>> under several fonts (for instance, Droid Sans Mono), whereas in Emacs
>> 24, they only work properly with the FreeMono font. The precise
>> behavior I am observing on Emacs 24 is where the base character and the
>> combining character sit side-by-side instead of superimposed on one
>> another.
>
> Looks like some side effect of changes in how we select fonts. Where
> Emacs 23 would force the base character to use the font that could
> display the combining character, Emacs 24 now does not, which disables
> auto-composition because Emacs can only compose characters that come
> from the same font. So the only way to display those characters as
> composed is to select a buffer font that can display them.
Does that mean that the behaviour is not a bug, or should it be fixed?
Best regards,
Stefan Kangas
next prev parent reply other threads:[~2019-09-21 9:51 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-13 15:49 bug#17261: Some combining characters don't combine (Emacs 24 regression) Max Shinn
2014-04-13 17:36 ` Eli Zaretskii
2019-09-21 9:51 ` Stefan Kangas [this message]
2019-09-21 12:21 ` Eli Zaretskii
2019-10-29 4:30 ` Stefan Kangas
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