bug#44020: 28.0.50; Prefer selection of colour emoji fonts?

[Eli Zaretskii]

> From: Stephen Berman <stephen.berman@gmx.net>
> Cc: Robert Pluim <rpluim@gmail.com>,  44020@debbugs.gnu.org,  larsi@gnus.org
> Date: Mon, 19 Oct 2020 21:03:49 +0200
> 
> > Didn't someone say they can see color emoji on Cairo?
> 
> Yes, Lars noted (and I confirm) that the following two lines suffice:
> 
> (set-fontset-font t 'symbol "Noto Color Emoji")
> (set-fontset-font t 'symbol "Symbola" nil 'append)

Are the Emoji displayed by Noto Color Emoji or by Symbola?

And what version of Noto Color Emoji do you have?

And finally, could you step through the code shown by Robert and tell
whether the Noto Color Emoji's average_width you get is also zero or
non-zero?

Thanks.