Mouse middle button no longer a push button in calendar diary

[rlemieu]

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In GNU Emacs 21.4.2 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2006-02-03 on pc2
configured using `configure  --prefix=/opt/emacs'
Important settings:
  value of $LC_ALL: en_US
  value of $LC_COLLATE: C
  value of $LC_CTYPE: en_US.ISO-8859-1
  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
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

1. Under Emacs-21.4.2, while the calendar is displayed in, say, the bottom
   part of the screen and a diary is displayed in the other part, pressing
   the middle button of the mouse when the cursor is over a diary entry
   does not change the background color of the entry to green as it should,
   the pop-up instruction "mouse-2, RET: push this button" does not show up,
   and pressing the middle button returns the error message: Buffer is read
   only: #<buffer *Fancy Diary Entries*>.  

2. The function works properly under Emacs-21.3.50 but fails
   under Emacs-21.4.2.

3. Both versions of Emacs share the same "site-lisp" directory.

4. Here is what the "describe-bindings" has to say over the "diary" part of
   the screen for both versions of emacs.  I show just the beginning of the
   listing in both cases.

  Emacs-21.4.2

        Key translations:
        key             binding
        ---             -------

        C-x             Prefix Command

        C-x 8           iso-transl-ctl-x-8-map

        
        Global Bindings:


  Emacs-21.3.50

        Key translations:
        key             binding
        ---             -------

        C-x             Prefix Command

        C-x 8           iso-transl-ctl-x-8-map

        
        `keymap' Property Bindings:
        key             binding
        ---             -------

        <mouse-2>       push-button
        RET             push-button

        
        Major Mode Bindings:



Recent input:
<mouse-movement> <mouse-1> M-x d e s c r <tab> b i 
n <tab> <return> <down-mouse-1> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <drag-mouse-1> <down-mouse-1> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <drag-mouse-1> <help-echo> 
<help-echo> <help-echo> <menu-bar> <help-menu> <emacs-problems> 
<down-mouse-1> <mouse-movement> <mouse-1> C-x k <return> 
C-x 0 <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <menu-bar> <help-menu> <report-emacs-b
ug>

Recent messages:
Marking diary entries...done [2 times]
Preparing diary... [6 times]
Loading holidays...done
Loading cal-hebrew...done
Loading cal-islam...done
Loading cal-china...done
Preparing diary...done
Loading view...done
Type C-h for help, h for commands, q to quit.
Loading emacsbug...done