GNU bug report logs - #17261
Some combining characters don't combine (Emacs 24 regression)

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: max <at> maxshinnpotential.com, handa <at> gnu.org, 17261 <at> debbugs.gnu.org
Subject: bug#17261: Some combining characters don't combine (Emacs 24 regression)
Date: Sat, 21 Sep 2019 15:21:05 +0300

> From: Stefan Kangas <stefan <at> marxist.se>
> Date: Sat, 21 Sep 2019 11:51:02 +0200
> Cc: Max Shinn <max <at> maxshinnpotential.com>, Kenichi Handa <handa <at> gnu.org>, 17261 <at> debbugs.gnu.org
> 
> > 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?

I don't think it's a bug, no.

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