bug#2228: 23.0.90; rmail-cease-edit ignores changes to the message headers

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 [email protected] mailing list.

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

If one invokes rmail-edit, and edits the headers of the message, the
changes to the headers are not copied back to the original message
held in rmail-buffer.  The effect is that your edits of the headers
are lost after you type "C-c C-c" to exit rmail-edit.

Note that fixing this properly should not just copy the modified
headers, but also take the necessary actions for special headers like
Content-Type and Content-Transfer-Encoding.

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
d:/gnu/emacs/etc/DEBUG for instructions.


In GNU Emacs 23.0.90.1 (i386-mingw-nt5.1.2600)
 of 2009-02-07 on HOME-C4E4A596F7
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4)'

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: ENU
  value of $XMODIFIERS: nil
  locale-coding-system: cp1255
  default-enable-multibyte-characters: t

Major mode: RMAIL

Minor modes in effect:
  tooltip-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-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:
- b u <tab> <tab> C-g M-: ( s e t - b u f f e r - m 
u M-/ SPC n i l ) <return> C-x o C-SPC <right> <right> 
<right> <right> <right> <right> <right> <right> <right> 
<right> <right> M-: ( e n c o d e - c o d i n g - r 
e g i o n SPC ( m a r k ) S-SPC ( p o i n t ) S-SPC 
( g e t - b u f f e r SPC " * f o o * " ) ) <return> 
C-] M-: <up> <M-right> <C-right> <C-right> <C-right> 
<C-right> <right> SPC ' u n d e c i d e d C-e <return> 
C-x o <right> <right> <right> <right> <right> <right> 
<right> <right> <right> <right> C-x o M-: <up> <M-right> 
<C-right> <C-right> <C-right> <C-right> <C-right> <backspace> 
<backspace> <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> <backspace> r a w - t e x t 
- u n i x C-e <return> C-x o C-x o SPC C-y <left> <left> 
<left> <left> <left> <backspace> C-u C-\ l a t i n 
- 1 - p r e <tab> <return> : u <backspace> <backspace> 
" u C-a C-SPC C-e M-w C-x o <down> <down> <return> 
<return> C-x o M-: <up> <return> C-x o C-e <return> 
<return> C-x o M-: <up> <up> <return> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
C-x 1 C-u M-x r m a i l <return> ~ / d a <tab> I N 
B <tab> n <tab> <return> h C-x o <help-echo> <help-echo> 
<down-mouse-1> <help-echo> <drag-mouse-1> M-1 j e <down> 
<down> <down> <down> <down> <down> <left> , SPC f o 
o <down> <down> <down> <down> <down> C-c C-c M-x r 
e p o r t - e m <tab> <return>

Recent messages:
Quit
10 (#o12, #xa) [2 times]
Mark set
Loading quail/latin-pre...done
Mark set
22 (#o26, #x16) [2 times]
Loading vc-cvs...done
Counting messages...done
Computing summary lines...done
Editing: Type C-c C-c to return to Rmail, C-c C-] to abort