Subject: Re: bug#20254: 25.0.50; `face' overlays with equal priority at the same location

From: Stefan Monnier <[email-masked]>
Date: Fri, 03 Apr 2015 18:14:54 -0400

> Is there a rule behind this behavior?

If an overlay is nested inside another, then it takes precedence.
If neither is nested in the other then the precedence is not documented
(IIRC it's arbitrarily taken to be "the one that's closest to
point-min", and if start and end at the same position, then the
precedence depends on the 100% arbitrary addresses of the overlays in
memory).

        Stefan