Does somebody have a multi-screen setup for testing this patch?  With
my local X server `(display-screens)' returns (":0.0").  I assume an
additional screen would show up as ":0.1" in that list.  But I don't
know about Windows and Mac OS.  On Windows `(display-screens)' returns
("") and I am wondering what would show up with a multi-screen setup.

-- 
Ralf