bug#20727: 24.5; Font fallback doesn't work for the Emoji range

[Eli Zaretskii]

> From: Glenn Morris <rgm@gnu.org>
> Cc: Vasilij Schneidermann <v.schneidermann@gmail.com>,  20727@debbugs.gnu.org
> Date: Sun, 07 Jun 2015 14:09:27 -0400
> 
> FWIW, I see the same as the OP on two different systems.
> 
> Eli Zaretskii wrote:
> 
> > This usually means you have some other font installed that claims to
> > cover the Emoji block, but doesn't actually cover this character.
> 
> Is there a way to test that?

Try setting font-log to nil, and then look at its value after typing
the character.  The log is quite cryptic, but it does list the fonts.