Shaped windows "bug"?

[Vidar Madsen <vidar vidar prosalg no>]

Hi all. I'm pretty sure this has been up on some earlier occation, but
anyways...

My problems are caused by the somewhat strange method that _set_upos() 
works, i.e. not allowing (= ignoring) negative values. IMHO this should be
fixed, as it is impossible to move a shaped window even partially out of
the RHS and the top of the screen. (Just try it with testgtk / shapes. It
isn't obvious with there small windows, but try with a large pixmap if
you're not convinced.) 

Is there a good reason _set_upos() works this way? Wouldn't it be better
just to assign a (probably unused) value to indicate no change, such
as -1824575. ;-)

Thanks,
Vidar