bug#53255: [External] : bug#53255: highlight-regexp should show faces with their properties applied when selecting a face

[Drew Adams]

> > In addition to the odd sizes, some face names become completely
> > unreadable (e.g. the ansi-color-* ones).
> 
> Yes.  But perhaps that's OK?  You don't want to choose
> those faces here anyway.

Bad assumptions.

1. People use completion to do more than just make a
   choice.

2. The background of the *Completions* window isn't
   necessarily anything like the place where face
   you do choose is to be used.

> >> But it does accurately tell you what the result is doing to be, so
> >> perhaps it's OK?  Anybody have any opinions?
> >
> > Maybe using an affixation function (like read-char-by-name) would make
> > things less jarring?  E.g. fontifying the same string for every face
> > (say "x" or "example") and using that as suffix (rather than prefix, to
> > keep the face names aligned)?
> 
> Hm, yes, that sounds like a good idea.

It's been helping users since 2007 - as has giving
them the possibility to choose whether to use it or
not.  User control is important to such behavior.