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From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Problem report #24
Date: Tue, 11 Apr 2006 22:20:04 -0400
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    > face could be Qnil upon entry to the function?

    Sure, no problem: the problem report is when f==NULL and face!=Qnil.

I am not sure what "no problem" means here.
Are you saying there is no bug?