bug#9470: 24.0.50; Possible bidi-related slowness

[Eli Zaretskii]

> Date: Sat, 10 Sep 2011 23:53:30 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 9470@debbugs.gnu.org
> 
> > From: Lars Magne Ingebrigtsen <larsi@gnus.org>
> > Cc: 9470@debbugs.gnu.org
> > Date: Sat, 10 Sep 2011 22:42:31 +0200
> > 
> > Eli Zaretskii <eliz@gnu.org> writes:
> > 
> > > The question is, what is "exciting", and what should we do when we
> > > "bail out"?
> > 
> > I defer to you what would be exciting.  :-)  I would have thought the
> > presence of no strongly R2L characters would be a measure of
> > non-excitingness...
> 
> The long search is for the paragraph beginning.  Looking for R2L
> characters during that search will slow it even more.
> 
> Anyway, I reopened the bug and will try to think of something.

I committed a fix (revno 105807) that should keep the search for
paragraph beginning at bay.  Using your example, redisplay is now as
fast (or as slow ;-) as elsewhere.

I'm closing this bug.  Feel free to reopen if there are any
left-overs, or file a new bug if I caused regressions elsewhere.