From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 28312@debbugs.gnu.org, Nick Helm <nick@tenpoint.co.nz>
Subject: bug#28312: 25.2; Arabic script changes when scrolling
Date: Fri, 01 Sep 2017 16:36:13 +0900 [thread overview]
Message-ID: <wly3pyzx8y.wl%mituharu@math.s.chiba-u.ac.jp> (raw)
In-Reply-To: <83lgly29zf.fsf@gnu.org>
>>>>> On Fri, 01 Sep 2017 09:45:08 +0300, Eli Zaretskii <eliz@gnu.org> said:
>> With bidi enabled, Arabic text changes unexpectedly when scrolling
>> or moving point with the mouse.
>>
>> Recipe: Emacs -Q C-h h ;visit HELLO file ;use the mouse to scroll
>> slowly
>>
>> Observe the text on the line that starts with the word Arabic. As
>> the buffer scrolls, some of the characters in the Arabic
>> representations of the words "Arabic" and "Hello" change between at
>> least two glyphs.
> I don't see this here, but I'm not on Darwin. Can anyone reproduce
> this on GNU/Linux?
I could reproduce a similar effect also on Darwin, but a different
font backend driver (xft with libotf 0.9.3, m17n lib/db 1.7.0).
1. emacs -Q &
2. M-x describe-language-environment RET Arabic RET
3. Press and release the mouse button around the Arabic sample text.
(say, "Arabic" to the left)
The appearance of the sample text changes if I press the button, and
it changes back again when I release it.
The font used for displaying Arabic characters is "Arial Unicode MS".
YAMAMOTO Mitsuharu
mituharu@math.s.chiba-u.ac.jp
next prev parent reply other threads:[~2017-09-01 7:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-01 1:03 bug#28312: 25.2; Arabic script changes when scrolling Nick Helm
2017-09-01 6:45 ` Eli Zaretskii
2017-09-01 7:36 ` YAMAMOTO Mitsuharu [this message]
2017-09-01 8:01 ` Alexis
2017-09-01 8:16 ` Andreas Schwab
2017-09-01 8:35 ` Eli Zaretskii
2019-06-06 14:04 ` Eli Zaretskii
2019-06-09 23:56 ` Nick Helm
2019-06-10 17:27 ` Eli Zaretskii
2019-06-11 14:49 ` Eli Zaretskii
2020-08-10 14:13 ` Lars Ingebrigtsen
2017-09-01 8:16 ` Nick Helm
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