scroll-preserve-screen-position not working

[Angelo Borsotti]

Hello,

the scroll-preserve-screen-position variable had been
introduced some time ago in emacs 20. It allows to
keep the cursor in its position in a buffer when scrolling.
When it is not set, the cursor position is moved when
scrolling so as to make it always visible.
In emacs 21 (and alas in 22) this variable has no effect,
at least when emacs in running in Windows XP and also in
Vista.

Thank you

Angelo Borsotti