bug#59347: 29.0.50; `:family` face setting ignored

[Gregory Heytings]

> > > > That's the purpose of the loop at the end of font_find_for_lface. 
> > > > It starts with a specific spec and gradually makes it less specific 
> > > > if necessary (that is, if no suitable font has been found with a more 
> > > > specific spec).
> > >
> > > So we will be back to the same problem with those.
> >
> > Sorry, I don't understand what you mean.
>
> I mean that the basic algorithm that gradually makes the spec less 
> specific is used for non-numerical attributes, and so can potentially 
> reject valid fonts, just like it happens with these 3 numerical 
> attributes.

No, it won't reject valid fonts (unless I misunderstand what you mean by 
"valid font").  For example, when searching for a font in the monospace 
family, all fonts in the monospace family are considered.  If no such 
fonts are found, Emacs tries again (see face-font-family-alternatives) and 
considers all fonts in the courier family.  If no such fonts are found, 
Emacs tries again and considers all fonts in the fixed family.  After 
which Emacs gives up.