GNU bug report logs - #41626
28.0.50; activating mark breaks RTL shaping in etc/HELLO (auto-composition-mode)

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Message #8 received at 41626 <at> debbugs.gnu.org (full text, mbox):

From: "Basil L. Contovounesios" <contovob <at> tcd.ie>
To: Pip Cet <pipcet <at> gmail.com>
Cc: 41626 <at> debbugs.gnu.org
Subject: Re: bug#41626: 28.0.50; activating mark breaks RTL shaping in
 etc/HELLO (auto-composition-mode)
Date: Sun, 31 May 2020 13:40:57 +0100

Pip Cet <pipcet <at> gmail.com> writes:

> Recipe:
> start emacs -Q etc/HELLO
> move point to character position 358 (ARABIC LETTER SEEN)
> hit C-SPC to activate the mark
>
> Expected result:
> mark is activated, no change to shaping
>
> Actual result:
> The character at position 357 is no longer composed with the one at
> position 358. (screenshot with-mark.png) whereas it was composed
> before (screenshot without-mark.png)
>
> The same thing works fine in a separate buffer in an RTL paragraph.

FWIW, a similar thing was discussed in bug#35721.

-- 
Basil

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