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bug#2694: marked as done (23.0.91; C-p does not move point beyond the se


From: Emacs bug Tracking System
Subject: bug#2694: marked as done (23.0.91; C-p does not move point beyond the selective-display ellipses)
Date: Thu, 19 Mar 2009 03:10:05 +0000

Your message dated Wed, 18 Mar 2009 23:04:25 -0400
with message-id <address@hidden>
and subject line Re: 23.0.91; C-p does not move point beyond the 
selective-display ellipses
has caused the Emacs bug report #2694,
regarding 23.0.91; C-p does not move point beyond the selective-display ellipses
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.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact address@hidden
immediately.)


-- 
2694: http://emacsbugs.donarmstrong.com/cgi-bin/bugreport.cgi?bug=2694
Emacs Bug Tracking System
Contact address@hidden with problems
--- Begin Message --- Subject: 23.0.91; C-p does not move point beyond the selective-display ellipses Date: Tue, 17 Mar 2009 13:08:46 +0900 User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.91 (gnu/linux)
Hi,

Run with emacs -Q and try the following expression in the scratch
buffer:

(let ((buffer (generate-new-buffer "*test*")))
  (pop-to-buffer buffer)
  (setq visual-line-mode nil
        selective-display t
        truncate-lines t)
  (insert "A\n"
          (make-string (/ (window-width) 2) ?B) "\r"
          (make-string (/ (window-width) 2) ?C) "\n")
  (end-of-line 0))

Your cursor will be placed at the end of line 2 (after "...").  Then
even if you type C-p (previous-line) several times, the cursor stays at
the same position.

In GNU Emacs 23.0.91.1 (i486-pc-linux-gnu, GTK+ Version 2.12.12)
 of 2009-03-01 on elegiac, modified by Debian
 (emacs-snapshot package, version 1:20090228-1)
Windowing system distributor `The X.Org Foundation', version 11.0.10402000
configured using `configure  '--build' 'i486-linux-gnu' '--host' 
'i486-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' 
'--libexecdir=/usr/lib' '--localstatedir=/var' '--infodir=/usr/share/info' 
'--mandir=/usr/share/man' '--with-pop=yes' 
'--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/23.0.91/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.0.91/site-lisp:/usr/share/emacs/site-lisp'
 '--with-x=yes' '--with-x-toolkit=gtk' 'build_alias=i486-linux-gnu' 
'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -DSITELOAD_PURESIZE_EXTRA=5000 -g 
-O2' 'LDFLAGS=-g -Wl,--as-needed' 'CPPFLAGS=''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: ja_JP.UTF-8
  value of $XMODIFIERS: @im=SCIM
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Group

Minor modes in effect:
  gnus-topic-mode: t
  gnus-undo-mode: t
  which-function-mode: t
  icomplete-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<escape> x g n u s SPC n o SPC SPC <return> y L <escape> 
x r e p o r <tab> <tab> <return>

Recent messages:
Loading /home/ueno/.skk-cus...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Saving file /home/ueno/.newsrc-dribble...
Wrote /home/ueno/.newsrc-dribble
Gnus auto-save file exists.  Do you want to read it? (y or n) 
Reading /home/ueno/.newsrc.eld...
Ignoring disappeared server `nnimap'
Checking new news...done
Scanning for dabbrevs...100%

-- 
Daiki Ueno



--- End Message ---
--- Begin Message --- Subject: Re: 23.0.91; C-p does not move point beyond the selective-display ellipses Date: Wed, 18 Mar 2009 23:04:25 -0400
> (let ((buffer (generate-new-buffer "*test*")))
>   (pop-to-buffer buffer)
>   (setq visual-line-mode nil
>   selective-display t
>   truncate-lines t)
>   (insert "A\n"
>     (make-string (/ (window-width) 2) ?B) "\r"
>       (make-string (/ (window-width) 2) ?C) "\n")
>   (end-of-line 0))
>
> Your cursor will be placed at the end of line 2 (after "...").  Then
> even if you type C-p (previous-line) several times, the cursor stays at
> the same position.

I've checked in a fix.

This fix consists of reverting a change to the vertical-motion code made
in 2005.  I don't know the rationale for that change---the comments say
it's for dealing with selective-display, but it gives rise to the bug
you reported, and reverting it does not seem to cause any problems.
However, my tests are not conclusive, so if you could do some further
testing to make sure I did not reintroduce any problems, I'd appreciate
it.  Thanks.


--- End Message ---

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