[REVIEW-3-6] fix for fdo#53839, don't crash for invalid repaint range in cond format code

[Michael Meeks]

On Tue, 2012-08-28 at 03:36 +0200, Markus Mohrhard wrote:
> The patch is just a safe variant for now, the real problem is
> that the concept of calling the repaint code after a cell changed is
> not always correct

	Wow - we do that synchronously ? all re-rendering should be queued and
done at idle (IMHO) - to avoid various hideous problems, and to work
well with modern toolkits.

	Or did I get confused ? :-)

	Thanks,

		Michael.

-- 
michael.meeks at suse.com  <><, Pseudo Engineer, itinerant idiot