Re: `set-frame-font' doesn't support font aliases

[Stefan Monnier]

>> Can you recover the Emacs-22 behavior by restricting the backends to
>> just `x'?

> No, because the font-name parser is independent of font
> backends; i.e. even if you use only x font-backend, you can
> specify a font name as, for instance,
> "fixed-12:foundry=misc".

Then we need to detect the ambiguity, and provide a way for the user to
resolve the ambiguity.

> Another idea is to do:
>   (set-frame-font (font-spec :alias "fixed)).
> or
>   (set-frame-font ":alias=fixed")

That seems clean from the user's POV.  Tho maybe aliases should take
precedence, rather than the reverse.


        Stefan