`raise' property

[David Reitter]

Could someone check if the `raise' text display property works properly on X11?

On NS, it is not in 23/24, and I'm having a hard time seeing how xdisp.c 
handles this.  take_vertical_position_into_account() sets it->ascent / 
it->descent, but I don't understand how it ends up in a glyph string's "y", or 
how else the vertical position defined by ascent is set.  Does the font driver 
have to do something with it?

FWIW, I've had several bug reports from Aquamacs users because of broken 
super/subscripts in LaTeX (AUCTeX).
This:  (set-text-properties (region-beginning) (region-end) '(display (raise 
0.3)))  does not change the appearance of text (it works in Carbon Emacs 22).