Subject: 23.1; flashing when overlapping face and mouse-face properties

From: "Drew Adams" <[email-masked]>
Date: Thu, 10 Sep 2009 16:38:24 -0700

emacs -Q
 
In *scratch*, type this:
(accessible-keymaps (current-global-map))
 
Put point somewhere after the sexp and hit `C-u C-x C-e'.
 
The result sexp inserted is large, and it has a mouse-face property
over it all. Double-click a left paren somewhere inside the sexp, to
select a sublist.
 
The display flashes spasmodically. Very annoying. And you can hardly
see the region highlight at all.

In GNU Emacs 23.1.1 (i386-mingw-nt5.1.2600)
 of 2009-07-29 on SOFT-MJASON
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (4.4)'