GNU bug report logs - #20254
25.0.50; `face' overlays with equal priority at the same location

Previous Next

Full log

View this message in rfc822 format

From: Drew Adams <drew.adams <at> oracle.com>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 20254 <at> debbugs.gnu.org
Subject: bug#20254: 25.0.50; `face' overlays with equal priority at the same location
Date: Fri, 3 Apr 2015 15:24:56 -0700 (PDT)

> > 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).

In the case I described, the overlays are on exactly the same positions
(they coincide), so the last phrase applies, apparently: "100% arbitrary
addresses of the overlays in memory".

Any chance this implementation could be revisited, to do something
regular - predictable and user-manipulable?  Or would that be too costly
in terms of performance?  If it is feasible then please consider this
to be such an enhancement request.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.