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

[Gregory Heytings]

> > > I'd have to investigate this, is it really worth the effort given that 
> > > a proper fix has already been found?
> >
> > I'd like to hear Stefan say that this is fixed on his system as well. 
> > And yes, I'd still be interested in understanding why asking for 
> > another foundry fixed or worked around the problem.
>
> Okay, I'll try to find out if I have time.

Well, I cannot investigate this myself.  I just tried

src/emacs -Q --eval \
        '(progn
           (custom-set-faces `(variable-pitch
                               ((t (:family "DejaVu Sans" :foundry "PfEd")))))
           (add-to-list `default-frame-alist
                        `(font . 
"-misc-fixed-*-r-semicondensed-*-13-*-*-*-*-*-*-*"))
           (font-lock-mode -1)
           (insert (propertize "hello" `face `variable-pitch)))'

and the font I got is 
-PfEd-Terminus-medium-normal-normal-*-12-*-*-*-c-*-iso10646-1.  I removed 
the Terminus font from my system, and I got "no font available".