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

[Eli Zaretskii]

> 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?