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

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: Robert Pluim <rpluim@gmail.com>,  Eli Zaretskii <eliz@gnu.org>,
>   56691@debbugs.gnu.org,  hello@paulwrankin.com
> Date: Mon, 01 Aug 2022 18:42:55 +0800
> 
> Lars Ingebrigtsen <larsi@gnus.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.

> I think the better solution would be to add a separate "color" field to
> font specs, entities, and objects.

That's orthogonal, and can only be done once the predicate is
implemented.