Re: region-based face-remapping

[Eli Zaretskii]

> Date: Mon, 15 Jan 2024 22:19:28 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: emacs-devel@gnu.org
> 
> > With such a functionality, your request would be satisfied with a simple
> > overlay with a single `face` property.
> 
> But only if the effect is to transform all the faces in the region in
> the same way.  My understanding is that the request is not necessarily
> limited to that.

And another, IMO more serious issue: an overlay like that over a
region will change all the faces in the region, including the default
face, whereas the request was to change only a particular set of
faces, and I very much doubt that the default face was one of them.