bug#47074: Replace XPM icons with Unicode codepoints in customize/widgets

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Eli Zaretskii <eliz@gnu.org>,  47074@debbugs.gnu.org
> Date: Thu, 11 Mar 2021 19:03:48 +0100
> 
> Stefan Kangas <stefan@marxist.se> writes:
> 
> > I think SVG is obviously much preferable to XPM, but there is still the
> > problem that the images don't scale with the text.  Do we have a general
> > solution to that?  If not, should we have one?
> 
> `create-image' does scale the images with the text (by default -- but
> perhaps not on all platforms) -- it looks at how big the default font is
> and sets :scaling.

But that doesn't happen in Custom buffers when one enlarges the text
scale, does it?