bug#2456: 22.2.1 mouse-yank-at-point setting is not obeyed in all buffers

[Jari Aalto <jari.aalto@cante.net>]

SETUP

emacs -Q &
(setq mouse-yank-at-point t)

TEST

1. Write text on 10 lines e.g. at *scratch*
2. Mouse-1 drag to Copy text
3. Mouse-1 to click on some line
4. Mouse-2 to paste
5. Move mouse cursor away from the line
6. Mouse-2 to paste

=> mouse-yank-at-point setting is obeyed and text is pasted to cursor
position (phase 3)

7. M-x shell
8. Hit enter to insert 10 lines
9. Mouse-1 drag to copy text from prompt string
10. Click on first line
11. Move mouse cursor away from the line, say line 5
12. Mouse-2 to paste

=> mouse-yank-at-point setting is not obeyed. The text is pasted at
waved mouse cursor position, not the point where cursor (phase 10)
is blinking; at first line.

In GNU Emacs 22.2.1 (x86_64-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2008-11-10 on excelsior, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.10402000
configured using `configure  '--build=x86_64-linux-gnu' '--host=x86_64-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' '--localstatedir=/var/lib' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes' '--enable-locallisppath=/etc/emacs22:/etc/emacs:/usr/local/share/emacs/22.2/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/22.2/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/22.2/leim' '--with-x=yes' '--with-x-toolkit=athena' '--with-toolkit-scroll-bars' 'build_alias=x86_64-linux-gnu' 'host_alias=x86_64-linux-gnu' 'CFLAGS=-DDEBIAN -g -O2' 'LDFLAGS=-g' 'CPPFLAGS=''

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_DK.UTF-8
  locale-coding-system: utf-8
  default-enable-multibyte-characters: t

Major mode: Message

Minor modes in effect:
  csv-field-index-mode: t
  footnote-mode: t
  mml-mode: t
  whitespace-global-mode: t
  minibuffer-electric-default-mode: t
  icomplete-mode: t
  auto-image-file-mode: t
  show-paren-mode: t
  global-auto-revert-mode: t
  shell-dirtrack-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
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t