Thanks, I've got something that seems to work now.  I read your message
afterwards, so I'm afraid I think it does modify the glyph matrix and I've not
used FRAME_TERMCAP_P.  (I'm still not sure how the iterator, glyph matrix and
write_glyphs relate.  I would have thought if I've changed the glyph matrix I
don't need to call write_glyphs but that doesn't seem to be the case.  Also if
I call write_glyphs with different values, these would get overwritten with
those from the glyph matrix when an update is done.)

Anyway I'd like to commit these changes now.  I'm confident that the patch DTRT
generally, although I'm sure there will be a few problems.  It is perhaps
timely with the imminent merge of multi-tty, and should be possible to extend
to xterms by someone who understands the difference between mev and rmev.

So could someone please try it out and say if it works for them?

-- 
Nick                                           http://www.inet.net.nz/~nickrob


1) CVS diff against repository at Wed May 16 10:26am (+12:00) (on the trunk).

2) To build you need libgpm and gpm.h.  On Ubuntu these are in
   the packages gpm and gpm-dev respectively.

3) To enable do M-x t-mouse-mode (make sure that you've byte compiled the new
    t-mouse.el first).