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Re: Image scroll issue

From: Kim F. Storm
Subject: Re: Image scroll issue
Date: Wed, 03 Jan 2007 11:53:11 +0100
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.92 (gnu/linux)

Chris Moore <address@hidden> writes:

> Yet my C-v is being 'undone' between something like 0.1 and 0.5
> seconds after I do it.  I'm pretty sure that whatever it is that's
> triggering the scroll back is happening at 0.5 second intervals.  I
> can do exactly 2 C-v's per second and have them both undo.
> blink-cursor-interval is a variable defined in `frame.el'.  Its value
> is 0.5.  Yet changing it to 2.5 and re-enabling blink-cursor-mode
> doesn't affect the 0.5 second delay on undoing my scroll through the
> w3m buffer.
> What else happens at 0.5 second intervals in Emacs that's not in
> timer-list or timer-idle-list?

It could be selection requests...

One thing which can confuse Emacs to make superfluous redisplays is
the clipboard/x-selection.

Some buggy clipboard handlers will query the "selection owner"
(e.g. Emacs) very often for the contents of the clipboard/selection,
and Emacs doesn't always handle that well.  (Another effect of this
that I see myself [I use RedHat 9.0 which has a buggy KDE Klipper]
is that the blinking cursor disappears for several/many seconds).

Before you scroll the image window in Emacs, could you try to select
some text in some other application (e.g. an xterm), so that the
selection is not "owned" by Emacs.

Kim F. Storm <address@hidden> http://www.cua.dk

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