bug#8781: 24.0.50; unload-feature don't restore default key

["Andreas Röhler" <andreas.roehler@easy-emacs.de>]

emacs -Q:

in scratch-buffer

M-x python-mode

M-x describe-key <backspace>

==>

`python-backspace'

OK

M-x unload-feature python

M-x describe-key <backspace>

sends error:

describe-key: Symbol's function definition is void: python-backspace

;;;;;;;;;;

Cheers,

Andreas

--
https://code.launchpad.net/~a-roehler/python-mode/components-python-mode
https://code.launchpad.net/s-x-emacs-werkstatt/


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'.
For information about debugging Emacs, please read the file
/home/dresden/emacs-20110528/etc/DEBUG.


In GNU Emacs 24.0.50.1 (i686-suse-linux-gnu, X toolkit, Xaw3d scroll bars)
  of 2011-05-28 on myrkwid
Windowing system distributor `The X.Org Foundation', version 11.0.10903000
configured using `configure  '--enable-maintainer-mode' 'CFLAGS=-g -O2 
-fno-optimize-sibling-calls -v -save-temps''

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: de_DE.UTF-8
   value of $XMODIFIERS: @im=local
   locale-coding-system: utf-8-unix
   default enable-multibyte-characters: t

Major mode: Python

Minor modes in effect:
   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
   blink-cursor-mode: t
   auto-composition-mode: t
   auto-encryption-mode: t
   auto-compression-mode: t
   line-number-mode: t
   transient-mark-mode: t

Recent input:
M-x p y t h o n - m o d e <return> C-h k <backspace>
C-x 1 M-x u n l o a d - f e a t u <tab> <return> p
y t h o n <return> C-h k <backspace> M-x r e p o r
t - f <backspace> r <backspace> e m a c s - b u g
<return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Type C-x 1 to delete the help window.
describe-key: Symbol's function definition is void: python-backspace

Load-path shadows:
None found.

Features:
(shadow sort gnus-util time-date mail-extr message sendmail format-spec
rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mailabbrev mail-utils
gmm-utils mailheader emacsbug loadhist help-fns help-mode view easymenu
comint regexp-opt ring 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 x-toolkit x multi-tty emacs)