How to use non-font-lock face in font-lock-keywords?

[Tassilo Horn <tassilo@member.fsf.org>]

Hi all,

I have a problem with the specification of faces in font-lock entries.
When I use either

--8<---------------cut here---------------start------------->8---
(defparameter greql-fontlock-keywords-doc
  (let ((regex "foo"))
    (list (list (concat "\\(?:[`]?" regex "['(]\\)")
                1 'font-lock-function-name-face))))
--8<---------------cut here---------------end--------------->8---

or

--8<---------------cut here---------------start------------->8---
(defparameter greql-fontlock-keywords-doc
  (let ((regex "foo))
    (list (list (concat "\\(?:[`]?" regex "['(]\\)")
                1 font-lock-function-name-face))))
--8<---------------cut here---------------end--------------->8---

(the difference is the quoting of f-l-function-name-face) and then use
this variable as single entry in `font-lock-defaults', it works as
expected.  But when I use 'bold instead of some font-lock-*-face,
nothing is fontified.

I also tried using a FACESPEC (face 'bold), or defined a variable
greql-doc-face with the value 'bold and used the variable as FACESPEC,
neither of those did work. :-(

Why?  What do I need to do to use an arbitrary face?

Bye,
Tassilo