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From: Carsten Dominik <carsten.dominik@gmail.com>
Subject: Re: performance problems with drawers
Date: Sat, 6 Feb 2010 07:21:39 +0100
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To: Samuel Wales <samologist@gmail.com>
Cc: emacs-orgmode@gnu.org, Al <gmane00@wilec.net>


On Feb 6, 2010, at 1:14 AM, Samuel Wales wrote:

> On 2009-08-02, Carsten Dominik <carsten.dominik@gmail.com> wrote:
>> P.S.  Unfortunatey, I cannot fix the performance issues
>> regarding vertical cursor motion, this is in the guts of
>> Emacs.  `C-c C-f' and `C-c C-b' do help a bit...
>
> It is funny that outline-previous-visible-heading is faster than
> previous-line when the previous subtree is folded.  I wonder if Emacs
> searches for bol when it should be searching for visible text first,
> then bol, or something.

WHen Emacs does `previous-line', it does line by line, moving
on when the line is invisible. C-c C-b search headlines by regexp
and check only the headlines for visibilitiy.

- Carsten