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

[Eli Zaretskii]

> Date: Fri, 12 Mar 2021 18:25:34 +0000
> From: Alan Third <alan@idiocy.org>
> Cc: stefan@marxist.se, 47074@debbugs.gnu.org
> 
> > > Alas it doesn't resize the image as you scale with C-x C-+.
> > 
> > Why not? what is preventing that?
> 
> Simply that we're inserting an image and to change it we'd have to
> regenerate it.

Even if some attributes of the image spec reference variables?