RE: Which-function-mode is turning itself off

[Richard.G.Bielawski]

This problem is not consistently reproducible.
It virtually never happens if I start a new Emacs, visit a file,
do an occur, and move around.  Something 'sets it off'.
Thereafter, which-function-mode keeps turning itself off.
As yet I have no idea what sets it off but the error below does
seem to be what turns it off once it starts happening.

  -----Original Message-----
  From: Bielawski, Richard G. [mailto:address@hidden
  Sent: Tuesday, May 17, 2005 10:49 AM
  To: address@hidden; address@hidden
  Cc: address@hidden
  Subject: RE: Which-function-mode is turning itself off
   
   
    -----Original Message-----
    From: Richard Stallman [mailto:address@hidden
    Sent: Monday, May 16, 2005 11:38 PM
    To: address@hidden
    Cc: address@hidden
    Subject: Re: Which-function-mode is turning itself off
    
    
        Since installing this change the problem
        has not re-occurred.  I took the change out and it occurs
        constantly. 
    
     This is quite puzzling.
   
  You're telling me.  I spent over an hour trying to figure out how
  that was possible before asking for suggestions on what next.
    
        When which-function-mode turns itself off the error which
        the code below implies will be reported is nowhere to be
        found in my *messages* buffer.  I.E.
        "Error in which-func-update: ..."
    
     What is the rest of the message? 
   
  It's not there.  I wish I knew. 
  But I spent a couple more hours.
  I believe this is the original error triggering the other error.
   
  * error("Error in which-func-update: %s" (error "This buffer cannot use 
`imenu-default-create-index-function'"))
    byte-code("???\"? [info which-func-mode -1 error "Error in 
which-func-update: %s"] 3)
    byte-code("????????É\n????
    which-func-update-1(#<window 43 on *Occur-N50S*>)
   
  This error is consistent with the symptoms.  
  It typically turns itself off when I'm in an occur buffer.