(when (> rbot 0)
(set-window-vscroll nil (+ vs (min rbot (frame-char-height))) t)))
;; If cursor just entered the bottom scroll margin, move forward,
- ;; but also vscroll one line so redisplay wont recenter.
+ ;; but also vscroll one line so redisplay won't recenter.
((and (> vpos 0)
(= py (min (- (window-text-height) scroll-margin 1)
(1- vpos))))