bug#53636: [External] : bug#53636: 29.0.50; face-remapping broken on master

[Drew Adams]

> > > No, it isn't.  We had examples with hundreds of faces, back when we
> > > decided to store faces in a hash-table.
> >
> > Sorry, I don't follow -- examples of what that had hundreds of faces?
> 
> People reported they have hundreds of faces defined in their Emacs
> sessions.  See this message, for example:
> 
>   https://urldefense.com/v3/__https://lists.gnu.org/archive/html/emacs-
> devel/2021-
> 05/msg01031.html__;!!ACWV5N9M2RV99hQ!eDGeVB_SQ0DAF1rV2RiFjVAIlEJnGK9tdVR-
> 2Epb6b7dlLp0UTSPD7Lm6l0_-q5Y$
> 
> It reports to have 600 to 800 faces defined (with 129 in "emacs -Q").

Yes.  FWIW, I have 475.

> All that just to have one face that mode-line-* and header-line
> etc. can inherit from?  Doesn't this look like a tail wagging the dog?

Right.  IMO, no such inheritance should be predefined.

If any user ever _wants_ a particular face to inherit
from another face she can easily do so.  Emacs should
not be predefining any such couplings.