Eli Zaretskii <eliz@gnu.org> さんはかきました:

>> From: Mike FABIAN <mfabian@redhat.com>
>> Cc: Eli Zaretskii <eliz@gnu.org>,  rgm@gnu.org,  39799@debbugs.gnu.org
>> Date: Tue, 21 Sep 2021 13:48:17 +0200
>> 
>> > Iʼve just pushed a change to master that should fix (almost) all the
>> > issues with displaying emoji sequences (except for keycaps). Feedback
>> > welcome.
>> 
>> Should that also fix the skin tones?
>
> It should, and I thought HarfBuzz on Cairo already supported that?

Yes, and I think my screenshot shows that it does because my Screenshot
uses Pango (and the rest of the rendering stack including HarfBuzz and
Cairo). 

> Can you try this with hb-view and see if HarfBuzz produces a single
> glyph/grapheme from this sequence?

$ hb-view --annotate --font-file=/home/mfabian/.fonts/joypixels-6.6/android/joypixels-android.
ttf --font-size=50 --text="👩🏽"

looks like: