;; Actually, the whole subject of the minibuffer edge of the frame is
;; rather messy. It turns out that with a sufficiently large delta,
;; we can fly off the bottom edge of the frame and miss the minibuffer
-;; altogther. This, I think, is never right: if there's a minibuffer
+;; altogether. This, I think, is never right: if there's a minibuffer
;; and you're not in it, and you move down, the minibuffer should be
;; in your way.
;;