Subject: bug#19381: The doc string for `sit-for' is wrong; redisplay isn't unconditionally done.

From: Stefan Monnier <[email-masked]>
Date: Mon, 15 Dec 2014 09:41:48 -0500

> That's ~20% of the instances.

But that doesn't say if those instances would want to redisplay when
there's pending input.  The 0 argument only says that they don't want to
wait after performing the redisplay.

        Stefan