Wrong buffer boundary messages for prior and next keys, with and without pc-selection-mode

[Miguel V. S. Frasson]

Hi

Starting emacs -Q, I get an empty scratch buffer.  Pressing PRIOR
(PageUp key on my keyboard), I get "End of buffer" Message, while I
should get "Beginning of buffer".

Pressing NEXT (PageDown), I get "End of buffer".  It's Ok.

Enabling pc-selection mode, another funny behaviour: pressing PRIOR, I
get "End of buffer" (while I should get "Beginning of buffer",) and
pressing NEXT, I get nothing (while I should get "End of buffer".)

Adding just one SPC to buffer, the behavior changes drastically.  No
matter where point is, the messages are correct. With
pc-selection-mode, it never complains, while it *should*, just as
without this minor-mode.

How to reproduce

1) $ emacs -Q
2) <prior> (wrong message)
3) <next>
4) M-x pc-selection-mode RET
5) <prior> (wrong message)
6) <next>  (wrong message)
7) C-x C-c

8) $ emacs -Q
9) SPC
10) <prior> or <next> some times in any order --> (correct messages)
11)  M-x pc-selection-mode RET
12) <prior> or <next> some times in any order --> no messages (wrong)

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
/usr/local/share/emacs/22.0.50/etc/DEBUG for instructions.


In GNU Emacs 22.0.50.2 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
of 2006-06-08 on miguel
X server distributor `The X.Org Foundation', version 11.0.60802000
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
 locale-coding-system: utf-8
 default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
 delete-selection-mode: t
 pc-selection-mode: t
 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
 unify-8859-on-encoding-mode: t
 utf-translate-cjk-mode: t
 auto-compression-mode: t
 line-number-mode: t
 transient-mark-mode: t

Recent input:
<prior> <prior> <next> <next> M-x p c - s e l e <tab>
<return> <prior> <prior> <next> <next> M-x r e p o
r t - e m <tab> <return>

Recent messages:
(emacs -Q)
For information about the GNU Project and its goals, type C-h C-p.
call-interactively: End of buffer [4 times]
Loading pc-select...done
Loading delsel...done
Pc-Selection mode enabled
scroll-down-nomark: End of buffer [2 times]
Loading emacsbug...
Loading regexp-opt...done
Loading emacsbug...done

--
Miguel Vinicius Santini Frasson
address@hidden