bug#39799: 28.0.50; Most emoji sequences don’t render correctly

[Eli Zaretskii]

> From: Mike FABIAN <mfabian@redhat.com>
> Cc: rpluim@gmail.com,  rgm@gnu.org,  39799@debbugs.gnu.org
> Date: Sat, 25 Sep 2021 09:35:03 +0200
> 
> Something behaves slightly weird though when stepping with the cursor
> over the following emojis:
> 
> 👩🏽 🏴󠁧󠁢󠁥󠁮󠁧󠁿 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🏴󠁧󠁢󠁷󠁬󠁳󠁿 🏳️‍🌈 🏳️‍⚧️ 🏴‍☠️
> 
> For the 3 British flags, 🏴󠁧󠁢󠁥󠁮󠁧󠁿 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🏴󠁧󠁢󠁷󠁬󠁳󠁿, I need 7 times forward-char 
> to step
> over them (they are made from 7 code points). But for the other emoji in
> that example (👩🏽 🏳️‍🌈 🏳️‍⚧️ 🏴‍☠️) I need only 1 forward-char to step over
> each of them, even though they are also made from more than one code
> point.

Thanks, I installed a fix.