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This bug was fixed by RMS on 2004-11-02:

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** scroll-preserve-screen-position doesn't work with a header-line-format

From: jbyler+emacs-lists@anon41.eml.cc
Date: Tue, 17 Aug 2004 17:10:14 -0400

There seems to be an off-by-one error triggered by using a header line
together with scroll-preserve-screen-position.  The symptom: instead of
staying in the same position on the screen when scrolling, the cursor
moves one screen line down each time the buffer is scrolled.  Put
another way: repeatedly typing C-v M-v or using a mouse scroll wheel to
scroll up and down causes the cursor to migrate slowly down the screen
instead of staying put as it should.

To reproduce:

emacs -q --no-site-file
(setq scroll-preserve-screen-position t)
(setq header-line-format "")
C-v M-v C-v M-v C-v M-v etc.
This commit is contained in:
Kim F. Storm 2004-11-08 23:52:54 +00:00
parent ee960c0a97
commit 091cccb68d
1 changed files with 0 additions and 21 deletions
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@ -104,27 +104,6 @@ interrupting I can get a backtrace, here's an example:
Update: Maybe only reveals itself when compiled with GTK+
** scroll-preserve-screen-position doesn't work with a header-line-format
From: jbyler+emacs-lists@anon41.eml.cc
Date: Tue, 17 Aug 2004 17:10:14 -0400
There seems to be an off-by-one error triggered by using a header line
together with scroll-preserve-screen-position. The symptom: instead of
staying in the same position on the screen when scrolling, the cursor
moves one screen line down each time the buffer is scrolled. Put
another way: repeatedly typing C-v M-v or using a mouse scroll wheel to
scroll up and down causes the cursor to migrate slowly down the screen
instead of staying put as it should.
To reproduce:
emacs -q --no-site-file
(setq scroll-preserve-screen-position t)
(setq header-line-format "")
C-v M-v C-v M-v C-v M-v etc.
** Clicking on partially visible lines fails
From: David Kastrup <dak@gnu.org>