GNU bug report logs - #9324
24.0.50; Movement past end of screen causes weird jump

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Message #59 received at 9324-done <at> debbugs.gnu.org (full text, mbox):

From: Antoine Levitt <antoine.levitt <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Ivan Andrus <darthandrus <at> gmail.com>, 9324-done <at> debbugs.gnu.org
Subject: Re: bug#9324: 24.0.50; Movement past end of screen causes weird jump
Date: Fri, 26 Aug 2011 16:04:02 +0200

26/08/11 12:20, Eli Zaretskii
>> From: Ivan Andrus <darthandrus <at> gmail.com>
>> Date: Thu, 25 Aug 2011 22:11:37 +0200
>> Cc: antoine.levitt <at> gmail.com,
>>  9324 <at> debbugs.gnu.org
>> 
>> Indeed and that is very important to reproducing this bug.  What is
>> your frame size?  Actually when building with athena I couldn't get
>> the frame big enough, so I changed the test case a little.  At the
>> end of the day what seems important is that the first line showing
>> be a continuation line.  Then executing the (forward-sexp) gives the
>> buggy behavior.
>
> I've managed to reproduce this.  Please note that most of the `progn'
> in bug-example-3.el is just clutter and is not needed to see the
> problem (that clutter is part of the reason why it took so long to see
> the problem).  Frame dimensions, mode-line face, exactly how you
> scroll and recenter -- all these are irrelevant.  All you need is
> this:
>
>   emacs -Q -l highlight-parentheses.el -l hl-sexp.el bug-example-3.el
>   C-u 1 C-v
>   M-x goto-line RET 24 RET
>   M-x hl-sexp-mode RET
>   M-x highlight-parentheses-mode RET
>   C-M-f
>
> After this, Emacs moves point to be centered in the window, instead of
> scrolling the window to show point at the end of the buffer, after the
> sexp it was supposed to move across as result of C-M-f.
>
> I fixed this in revision 105577 on the trunk.

Confirmed, thanks!

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