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Re: Scrollbars ?

From: Kim F. Storm
Subject: Re: Scrollbars ?
Date: Tue, 30 May 2006 14:04:22 +0200
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux)

address@hidden (Michaël Cadilhac) writes:

> address@hidden (Michaël Cadilhac) writes:
>> I use  a recent (3  days old) Emacs  and have a very  weird behavior
>> with scrollbars.  As I don't use  them normally, I  don't know since
>> when it happens.
>> $ emacs -Q with an X interface.
>> I then add enough newlines to make the scrollbars useful.
>> Then  I  type some  letters,  like  zzzzzzzzzzzzzzzzzzzzzzzzz ;  the
>> scrollbars then  got bigger, and bigger.  If I scroll  down using my
>> mouse and those scrollbars, they return  in a normal height ; but if
>> I  type another  character, the  scrollbar then  switch back  to big
>> ones.
>> I don't think it's the intended behavior.
> Is this not considered as a bug? I don't have any experience with
> scrollbars, so I don't know.

Emacs adjusts the size of the scroll bar handle to reflect the
percentage of the buffer text which is visible in the current window.
The calculation is based on number of characters rather than lines, so
the handle changes size quite dramatically as you scroll if you have a
mixture of lots of empty lines and long lines.

It's a rather uncommon way to do this, but that's how it's always been.

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

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