bug#9218: 24.0.50; bidi-display-reordering slowdown

[Eli Zaretskii]

> Date: Mon, 01 Aug 2011 21:51:13 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 9218@debbugs.gnu.org
> 
> > From: Florian Beck <abstraktion@t-online.de>
> > Date: Mon, 01 Aug 2011 20:45:27 +0200
> > 
> > I have a very large org-file (7.2MB, 6300 entries, 137k lines).
> > 
> > With 'bidi-display-reordering' set to nil, opening the file takes about
> > 20s, `scroll-up-command' takes 1s.
> > 
> > With 'bidi-display-reordering' set to t, opening the file takes ore than
> > 15 minutes, `scroll-up-command' takes about 2.5 minutes from the very
> > top.
> 
> Does setting bidi-paragraph-direction to left-to-right solve the
> problem?

I meant without resetting bidi-display-reordering to nil, of course.