bug#56691: outline-minor-mode displays navigation arrow buttons as emojis

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Po Lu <luangruo@yahoo.com>,  rpluim@gmail.com,  56691@debbugs.gnu.org,
>   hello@paulwrankin.com
> Date: Mon, 01 Aug 2022 13:51:04 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> > Great!  I guess we should add a C-level predicate like font-color-p?
> >> 
> >> What would it accept? Font entities or objects?
> >
> > What every other display-*-p function accepts: a frame or a terminal.
> 
> This is about the primitive that display-color-fonts-p will use, so it
> should take a font object (if we add it).

Why should it care about a specific font?  And how will you obtain a
font in these cases to begin with?  Fonts are extremely platform- and
user-configuration-dependent, so I see no reason to try to deal with
them.