This patch implements two things:
- space now dismisses a menu, text or menutext window when you are
at the bottom of that window
- Page scrolling in menus now works as follows:
pressing PgDn (or Space in NH mode) moves the focus down one page,
and moves the scroll position down one page. The effect of this
is that you always get a full new page of items (which is what
NetHack players expect), and that the focus moved down one page
(what Windows users expect.)
The same (revers) goes for scrolling up a page.
A Windows user will still be a bit surprised when the focus is on
the top item, and he presses '>': he gets a new page of things instead
of the focus moving to the bottom of the page.
However, the PgUp/PgDn keys (which he probably uses) still have the
old Windows behaviour.
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