Re: emacs takes exhorbitantly long to read long, one-line files.

[Eli Zaretskii]

> Date: Tue, 21 May 2013 14:06:04 +0200
> Cc: Ulrich Mueller <address@hidden>, Eli Zaretskii <address@hidden>,
>         Karl Fogel <address@hidden>,
>         Randy Yates <address@hidden>, address@hidden
> From: Ulrich Mueller <address@hidden>
> 
> >> Emacs 23.4:   4 s /  9 s
> >> Emacs 24.3:  16 s / 34 s
> >> 
> >> Is this degradation of performance expected?
> 
> > Can you try 24.3 with (setq-default bidi-display-reordering nil)?
> > With BIDI disabled, it shouldn't be 4x at least.
> 
> It's 6 s / 11 s then.

Not sure the bidi display is involved in 6 vs 4 sec, but you should
know that turning off bidi-display-reordering doesn't revert all the
differences between the old unidirectional display and the
bidirectional one.  It was never meant to do that in the first place.