bug#17752: 24.4.50; Scrolling other window while skeleton reads input inserts garbage

[Matthias]

1, Select a buffer whose content is not fully displayed in the 
selected window.   2. Choose a skeleton which read something from 
the minibuffer. Move
the cursor is at the bottom of the selected buffer. Insert the chosen
skeleton (for example python-skeleton-class).

3. When the minibuffer is selected and prompt for the skeleton's input,
scroll the initialy selected window (C-M-S-v).

4. Answer the prompt.

5. Garbage is inserted in the initially selected buffer because the point
has been moved in the middle of the skeleton insertion...

In GNU Emacs 24.4.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.12.2)
of 2014-05-27 on choubidou
Windowing system distributor `The X.Org Foundation', version 11.0.11501000
Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB

Important settings:
 value of $LC_COLLATE: C
 value of $LANG: fr_FR.UTF-8
 locale-coding-system: utf-8-unix

Major mode: Python

Minor modes in effect:
 tooltip-mode: t
 electric-indent-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:
<return> <return> <tab> SPC SPC SPC SPC SPC SPC SPC 
SPC SPC SPC SPC SPC SPC SPC SPC SPC SPC SPC SPC SPC 
h e i g h t SPC s o SPC t <backspace> <backspace> <backspace> 
<backspace> <backspace> . <return> <return> <return> 
T h u s SPC w h i l e SPC e d i t i o <backspace> n 
g SPC t h e SPC m i n i p <backspace> b u f f e r SPC 
<backspace> , SPC i t SPC w i l <backspace> <backspace> 
<backspace> w <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> SPC a n d SPC h i t i n <backspace> 
<backspace> t i n g SPC M - C - v <backspace> w SPC 
<backspace> , SPC t h i s SPC w i n d o w SPC w i l 
l SPC s c r o l l . SPC I SPC <backspace> <backspace> 
<backspace> \ <return> I f SPC t h i s SPC i s SPC 
d o n e SPC w h e n e <backspace> SPC i n s e r t i 
n g SPC a SPC s k e l e t o n , SPC g a r b a g e SPC 
w i l l SPC b e SPC i n s e r t e d . . . <return> 
<return> " " " <return> <return> C-p C-p C-p C-p C-n 
<return> <return> L e t ' s SPC s e e : C-n C-n C-n 
C-c C-t c C-M-S-v C-M-S-v H e r e I s SPC <backspace> 
M y C l a s s N a m e <return> <return> M-x r e m <backspace> 
p o r t SPC b u g <tab> <return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Can't guess python-indent-offset, using defaults: 4

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message dired format-spec
rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util help-fns mail-prsvr mail-utils skeleton python easymenu comint
ring ansi-color time-date tooltip electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt
fringe tabulated-list newcomment lisp-mode prog-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 nadvice
loaddefs button faces cus-face macroexp files text-properties overlay
sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process dbusbind
gfilenotify dynamic-setting system-font-setting font-render-setting
move-toolbar gtk x-toolkit x multi-tty emacs)

Memory information:
((conses 16 81166 7501)
(symbols 48 18657 0)
(miscs 40 44 149)
(strings 32 12404 4088)
(string-bytes 1 352602)
(vectors 16 10186)
(vector-slots 8 388085 5267)
(floats 8 72 430)
(intervals 56 310 0)
(buffers 960 11)
(heap 1024 45579 1022))