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From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Fwd: overlay face property not used for after-string property
Date: Tue, 06 Nov 2007 03:37:41 -0500
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To: Joe Wells <jbw@macs.hw.ac.uk>
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In-reply-to: <86y7dcfj56.fsf@macs.hw.ac.uk> (message from Joe Wells on Mon, 05
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Xref: news.gmane.org gmane.emacs.devel:82636
Archived-At: <http://permalink.gmane.org/gmane.emacs.devel/82636>

    Suppose overlay o2 has higher priority than overlay o1 and covers only
    part of overlay o1.  Does o2's face affect o1's display property?

I think it is ok if the answer is "undefined".