Re: Selecting message moves cursor in summary buffer by 3 lines

[Katsumi Yamaoka <yamaoka@jpl.org>]

>>>>> Nikolaus Rath wrote:
> Hello,

> Whenever I have a large number of unread messages (20 unrelated,
> unread messages seems to be a critical value) in the summary buffer,
> selecting one article shows the marked article but also moves down the
> cursor by 3 lines, so that pressing space doesn't show the next page
> of the visible article but selects the new article.

Try evaluating this form (type `C-x C-e' at the end of the line):

(setq scroll-margin 0)

If it solves the problem, you seem to have modified it in your
~/.emacs file (the default is `0').  There is a known problem in
Emacs 22 and greater that setting it to a non-zero value causes
Gnus malfunction at least in the summary buffer.  See:

http://article.gmane.org/gmane.emacs.devel/85300
http://article.gmane.org/gmane.emacs.devel/90810

> Detailed steps to reproduce:

>  1. In the group buffer, press G f and create a foreign group for the
>     attached example mbox file.

>  2. Enter the new group

>  3. Move cursor to the first article and select it with space. The
>     cursor stays on the same line, the article is shown and marked as
>     read.

>  4. Move the cursor into line 5, press space

>  5. The new article is shown, it is *not* marked as read and the
>     cursor moves down to line 8

>  6. Press space again

>  7. The article in line 8 of the summary buffer is shown and marked as
>     read, the cursor moves to line 11

> Please let me know if there is anything else I can do to help with
> this bug.

> I'm using
>  - Gnus v5.11
>  - GNU Emacs 22.1.1 (i486-pc-linux-gnu, GTK+ Version 2.12.9)
>    of 2008-05-03 on terranova, modified by Ubuntu

> Best,

>    -Nikolaus