bug#8867: 24.0.50; bidi-display-reordering + lino-mode + move-up = beginning of buffer

[Chen Levy]

Emacs 24.0.50 pulled from git repository on 2011-06-15, can't move point
up with up arrow key, when both bidi-display-reordering and lino-mode
are on.

Reproduction:

0. emacs -Q
1. (setq-default bidi-display-reordering t)
2. M-x lino-mode
3. hit the up-arrow key several times.

I get a beep and the message "Beginning of buffer", although the point
isn't on the first line.

Turning off lino-mode or bidi-display-reordering fix this problem.

----

In GNU Emacs 24.0.50.1 (i686-suse-linux-gnu, GTK+ Version 2.22.1)
 of 2011-06-15 on havitush
Windowing system distributor `The X.Org Foundation', version 11.0.10903000
configured using `configure  '--prefix=/opt/emacs24''

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: @im=local
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  linum-mode: t
  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:
C-x C-f . e m a <tab> <backspace> <backspace> <backspace>
g u <tab> <return> <next> <next> <next> <next> <next>
<next> <next> <next> <next> <next> <next> <next> <next>
<next> <next> <next> <next> <next> <next> <next> <next>
<next> <next> <next> <next> <next> <next> <next> <next>
<next> <next> <next> <next> <next> <next> <next> <next>
<next> <next> <next> <next> <next> <next> <next> <next>
<next> <next> <next> <next> <next> <next> <next> <next>
<next> <next> <next> <next> <next> <up> <up> <down>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <up> <up> <up> <up>
<up> <up> <up> <up> <up> <up> <up> C-x k <return> C-x
C-f <M-backspace> <M-backspace> . g n u <tab> - e <tab>
<return> <next> <next> <next> <next> <next> <next>
<next> <next> <next> <next> <next> <next> <next> <next>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <end>
C-x C-e M-x l i n u <tab> <return> <up> <up> <up> <up>
<up> <up> <down> <up> <up> <up> <down> <down> <down>
<up> <up> <up> <down> <up> <up> <down> <up> <up> <down-mouse-1>
<mouse-movement> <mouse-movement> <drag-mouse-1> <help-echo>
<help-echo> <help-echo> M-x r e p o p r <tab> <backspace>
<backspace> <backspace> <backspace> <backspace> r e
<backspace> <backspace> r e <backspace> <backspace>
<backspace> r e p o <tab> r <tab> <return>

Recent messages:
Loading vc-git...done
Loading vc-hg...done
scroll-up-command: End of buffer [9 times]
byte-code: End of buffer [2 times]
Making completion list...
scroll-up-command: End of buffer [7 times]
t
Linum mode enabled
byte-code: Beginning of buffer [11 times]
Making completion list...

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 linum help-mode easymenu view vc-hg vc-git
sh-script executable regexp-opt 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 dynamic-setting
font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)