GNU bug report logs - #873
Annoying recentering when scrolling down

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From: help-debbugs <at> gnu.org (Emacs bug Tracking System)
To: "Juanma Barranquero" <lekktu <at> gmail.com>
Subject: bug#873: marked as done (Annoying recentering when scrolling down)

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Your message dated Thu, 20 Nov 2008 10:25:03 +0100
with message-id <f7ccd24b0811200125g54fb5812wc3f67e5de87ec345 <at> mail.gmail.com>
and subject line 
has caused the Emacs bug report #873,
regarding Annoying recentering when scrolling down
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
bug report if necessary, and/or fix the problem forthwith.

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From: "Juanma Barranquero" <lekktu <at> gmail.com>
To: "Emacs Bug Tracker" <submit <at> debbugs.gnu.org>
Subject: Annoying recentering when scrolling down
Date: Wed, 3 Sep 2008 18:15:14 +0200

Package: emacs
Version: 23.0.60
Severity: normal

After setting this in .emacs:

(setq scroll-preserve-screen-position 'always
      scroll-conservatively           most-positive-fixnum ;; any large number
      scroll-step                     0)

scroll-down causes recentering. This is a regression.

The bug was apparently introduced by the following change:

2008-08-06  Chong Yidong  <address <at> hidden>

        * xdisp.c (try_scrolling): Use iterator to find the scroll margin,
        instead of window-end which does the wrong thing at eob.
        (try_cursor_movement): Minor optimization.
        (redisplay_window): If scroll margin is defined, don't assume
        window doesn't need scrolling.


emacs-devel discussion:

http://lists.gnu.org/archive/html/emacs-devel/2008-08/msg00903.html

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From: "Juanma Barranquero" <lekktu <at> gmail.com>
To: 873-done <at> debbugs.gnu.org
Date: Thu, 20 Nov 2008 10:25:03 +0100

Fixed by Chong Yidong with this change:


2008-10-27  Chong Yidong  <cyd <at> stupidchicken.com>

        * xdisp.c (try_scrolling): When computing the distance from the
        scroll margin to PT, try moving some distance past the window
        bottom before giving up.


http://cvs.savannah.gnu.org/viewvc/emacs/emacs/src/xdisp.c?r1=1.1268&r2=1.1269&pathrev=MAIN

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