bug#8927: 24.0.50; Flaw in C-x v u

[Richard Stallman <rms@gnu.org>]

I did C-x v = to see the changes in a file, then reverted the file
with C-x v u so I could install and commit those changes one by one.

Unfortunately, C-x v u deleted the *vc-diff* buffer and made this fail.

C-x v u should not delete the *vc-diff* buffer.



In GNU Emacs 24.0.50.1 (mips64el-unknown-linux-gnu, GTK+ Version 2.12.12)
 of 2011-06-10 on theobromine2
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: en_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Mail

Minor modes in effect:
  diff-auto-refine-mode: t
  shell-dirtrack-mode: t
  gpm-mouse-mode: t
  display-battery-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Recent input:
SPC v SPC - SPC DEL DEL = SPC t o SPC s e e SPC t h 
e SPC c h a n g e s SPC i n SPC a SPC f i l e , SPC 
t h e n SPC r e v e r t e d RET t h e SPC f i l e SPC 
w i t h SPC C - x SPC v SPC u SPC s o SPC I SPC c o 
u l d SPC i n s t a l l SPC a m d SPC DEL DEL DEL n 
d SPC c o m m i t SPC t h o s e SPC c h a n g e s RET 
o n e SPC b y SPC o n e . ESC q RET RET U n f o r t 
u n a t e l y , SPC C - x SPC v SPC u SPC d e l e t 
e d SPC t h e SPC * v c - d i f f * SPC b u f f e r 
SPC a n d SPC m a d e SPC t h i s SPC f a i l . RET 
RET C - x SPC v SPC u SPC s h o u l d SPC n o t SPC 
d e l e t e SPC t h e SPC * v c - d i f f * SPC b u 
f f e r . C-a C-p C-p C-p C-p C-p C-@ C-u C-n C-n C-n 
ESC w C-x m C-g ESC x r e o o r t DEL DEL DEL DEL p 
o r t SPC e m a c s TAB RET

Recent messages:
Quit
Mark set
There are unresolved conflicts in this file
Mark set
Saving file /home/rms/emacs-bzr/trunk/lisp/ChangeLog...
Wrote /home/rms/emacs-bzr/trunk/lisp/ChangeLog
Type C-h for help.
Quit [2 times]
Auto-saving...done
Mark set
Quit

Load-path shadows:
None found.

Features:
(shadow emacsbug smerge-mode ansi-color diff expect rmailedit mh-e
mh-compat mh-acros cl mh-buffers mh-loaddefs gnus gnus-ems nnheader
gnus-util time-date wid-edit cal-move cal-menu calendar cal-loaddefs
mule-util log-edit pcvs-util add-log parse-time vc-cvs sgml-mode
ispell derived byte-opt bytecomp byte-compile cconv macroexp debug
compare-w whitespace diff-mode easy-mmode vc ediff-merg ediff-diff
ediff-wind ediff-help ediff-util ediff-mult ediff-init ediff
vc-dispatcher dired-aux vc-bzr find-func help-fns warnings ind-util
rmailout kmacro quail help-mode view dabbrev shell pcomplete grep
compile multi-isearch newcomment qp mailalias rmailmm message sendmail
format-spec mml mml-sec mm-decode mm-bodies mm-encode mailabbrev
gmm-utils mailheader mail-parse rfc2231 rmail rfc2047 rfc2045
ietf-drums mm-util mail-prsvr mail-utils dired t-mouse battery paren
cus-start cus-load mailcrypt rfc822 comint regexp-opt ring easymenu
mailcrypt-init tooltip ediff-hook vc-hooks lisp-float-type mwheel
x-win x-dnd tool-bar dnd fontset image fringe lisp-mode register page
menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock
syntax facemenu font-core frame cham georgian utf-8-lang misc-lang
vietnamese tibetan thai tai-viet lao korean japanese hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer
loaddefs button faces cus-face files text-properties overlay sha1 md5
base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process dbusbind
dynamic-setting system-font-setting font-render-setting move-toolbar
gtk x-toolkit x multi-tty emacs)


-- 
Dr Richard Stallman
President, Free Software Foundation
51 Franklin St
Boston MA 02110
USA
www.fsf.org, www.gnu.org
Skype: No way! That's nonfree (freedom-denying) software.
  Use free telephony http://directory.fsf.org/category/tel/