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From: Richard Riley <rileyrg@gmail.com>
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Subject: Re: apply multiple faces using propertize
Date: Sat, 04 Sep 2010 14:15:27 +0200
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Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> Could some kind soul give me an example of stacking faces in elisp using
>> "propertize" please e.g the system display will use the second face if
>> the first is not defined?
>
> (propertize "foo" 'face '(face1 face2)) ?
>
>         Stefan
>

Ah, very good thanks. In my case since the face name is dynamically
generated it was of the form

(propertize str 'face (list (genFace "base") (genFace "base" y))
'gnus-face t) where genFace uses (intern) to convert a string name to
its internal symbol.

thanks a lot.