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bug#4368: 23.1; diff-hunk-kill -vs- final hunk in a file


From: Tom Tromey
Subject: bug#4368: 23.1; diff-hunk-kill -vs- final hunk in a file
Date: Mon, 07 Sep 2009 22:13:27 -0600

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the address@hidden mailing list,
and to the gnu.emacs.bug news group.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:


I'm using diff-mode to edit a patch.
The patch was generated by "git diff".
I typed M-k to remove the last hunk in a file.
However, it left the "header" around:

    diff --git a/src/data.c b/src/data.c
    index 7b59673..9063cef 100644
    --- a/src/data.c
    +++ b/src/data.c
    diff --git a/src/eval.c b/src/eval.c
    index 4b7aa32..dbaa385 100644
    --- a/src/eval.c
    [...]

This yielded an invalid patch.


If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/usr/share/emacs/23.1/etc/DEBUG for instructions.


In GNU Emacs 23.1.1 (i386-redhat-linux-gnu, GTK+ Version 2.16.5)
 of 2009-08-24 on x86-2.fedora.phx.redhat.com
Windowing system distributor `The X.Org Foundation', version 11.0.10601901
configured using `configure  '--build=i386-redhat-linux-gnu' 
'--host=i386-redhat-linux-gnu' '--target=i586-redhat-linux-gnu' 
'--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' 
'--sbindir=/usr/sbin' '--sysconfdir=/etc' '--datadir=/usr/share' 
'--includedir=/usr/include' '--libdir=/usr/lib' '--libexecdir=/usr/libexec' 
'--localstatedir=/var' '--sharedstatedir=/var/lib' '--mandir=/usr/share/man' 
'--infodir=/usr/share/info' '--with-dbus' '--with-gif' '--with-jpeg' 
'--with-png' '--with-rsvg' '--with-tiff' '--with-xft' '--with-xpm' 
'--with-x-toolkit=gtk' 'build_alias=i386-redhat-linux-gnu' 
'host_alias=i386-redhat-linux-gnu' 'target_alias=i586-redhat-linux-gnu' 
'CFLAGS=-DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 
-fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i586 
-mtune=generic -fasynchronous-unwind-tables''

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: Diff

Minor modes in effect:
  shell-dirtrack-mode: t
  diff-auto-refine-mode: t
  erc-list-mode: t
  erc-menu-mode: t
  erc-autojoin-mode: t
  erc-ring-mode: t
  erc-pcomplete-mode: t
  erc-track-mode: t
  erc-track-minor-mode: t
  erc-match-mode: t
  erc-button-mode: t
  erc-fill-mode: t
  erc-stamp-mode: t
  erc-netsplit-mode: t
  erc-spelling-mode: t
  erc-truncate-mode: t
  erc-status-mode: t
  erc-services-mode: t
  erc-networks-mode: t
  erc-irccontrols-mode: t
  erc-noncommands-mode: t
  erc-move-to-prompt-mode: t
  erc-readonly-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
g i t - r e v e r t RET C-x o C-x 1 C-v C-v C-l ESC 
v C-x b * s h TAB RET f r o m RET C-x b RET C-l ESC 
v C-h u g i t - r e s e t RET C-x o C-x 1 C-v C-v C-v 
C-v C-v k C-x b * s h TAB RET C-r 8 a 9 C-w C-r C-r 
C-r C-r C-x C-f / t m p / L RET C-s C-s C-a ESC v ESC 
v ESC v ESC v C-x b RET ESC p ESC p ESC DEL Q ESC b 
ESC b ESC b ESC b ESC t C-_ ESC f ESC t RET C-x C-f 
/ t m p / Q RET C-v C-v C-x k RET g i t C-a C-k . RET 
g i t SPC a p p l y SPC / t m p / Q RET g i t SPC s 
t a t u s RET C-c C-o g i t SPC c o m m i t SPC - a 
SPC - m ' r e v e r t SPC a SPC f e w SPC p a t c h 
e s SPC b y SPC h n d DEL DEL a n d ' RET g i t SPC 
a p p l y SPC t / DEL DEL / t m p / P RET C-x C-f / 
t m p / P RET C-c g 1 4 6 RET ESC x r e p o r t - e 
m TAB b TAB RET d i f f - C-g C-h k ESC k ESC x r e 
p o r t - e m TAB b TAB RET

Recent messages:
Please wait: formatting the git-reset man page...
git-reset man page formatted
Mark saved where search started [2 times]
call-interactively: Beginning of buffer [4 times]
History item: 1
History item: 2
Undo!
Mark set
Quit
Type C-x 1 to delete the help window.

Tom






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