bug#39340: 26.3; "Noto Emoji" font not displayed

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: rpluim@gmail.com,  39340@debbugs.gnu.org,  ynyaaa@gmail.com
> Date: Sun, 20 Sep 2020 12:55:54 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > I'm not really sure what would we write in PROBLEMS.  That some
> > unnamed characters don't display correctly when HarfBuzz is not
> > installed, and that if this happens, we suggest to install HarfBuzz
> > and/or build Emacs with HarfBuzz support?  If such a vague entry is
> > deemed useful, I can write it.
> 
> Yeah, I think that would be useful.

Done.