Re: [Emacs-diffs] emacs-25 ef768c7: Cope with multiple overlapping faces.

[Stefan Monnier]

>     * lisp/htmlfontify.el (hfy-face-to-style-i): Treat inheritance right to
>       left.
>       (hfy-face-resolve-face): Handle font specification as well as font
>       name. Documentation update. (Bug#21990)

I think even better would be to make the code use Emacs's own
face-inheritance code.  Not sure how that could work, but maybe
something like

    (let ((tempface (make-symbol)))
      (make-face tempface)
      (face-set-attribute :inherit foo)
      (face-get-attribute ...))

[ Probably combined with some caching to avoid creating the same
  temp-face repeatedly.  ]


        Stefan