🚀 go-pugleaf

I'm using Xemacs 21.1p9 under Win2k with VM 6.99. When I reply to a
message in VM, the buffer is named something like

   reply to "Foo Bar"

Unfortunately, this causes auto-saving to fail in the win32
environment because filenames cannot contain certain characters (such
as quotes). I tried modifying vm-update-composition-buffer-name,
changing

        (if (equal newbufname curbufname)
            nil
	  (rename-buffer newbufname t)))))

to 

        (if (equal newbufname curbufname)
            nil
	  (setq newbufname 
		(replace-in-string newbufname 
                       "[\"<>\\/:\*\?\|]" "" t))
	  (rename-buffer newbufname t)))))

This correctly strips out the unwanted characters, but when I am in
the reply buffer, my buffer name is now toggled between

   reply to Foo Bar

and

   reply to Foo Bar<2>

This again causes auto-save to fail, because '<' and '>' are not
allowed in Win32 file names.

As I move my cursor up and down in the message, the buffer name
changes back and forth between these two values. I can't seem to
figure out what is adding the "<2>" on the end of the buffers. I
thought it was vm-rename-current-mail-buffer, but modification of that
function revealed that it wasn't the culprit.

Any ideas on how to fix this problem? Is there a hook to use to strip
out these characters in the auto-save name? I couldn't seem to find
the right hook via using apropos on "auto-save".

thanks,
chris

PS - The uniquify package is NOT loaded, and BBDB 2.32 is insinuated,
if that provides any helpful clues.