Function: follow-window-end

follow-window-end is a byte-compiled function defined in follow.el.gz.

Signature

(follow-window-end &optional WINDOW UPDATE)

Documentation

Return position at which display currently ends in the Follow Mode group of windows which includes WINDOW.

WINDOW must be a live window and defaults to the selected one. This is updated by redisplay, when it runs to completion. Simply changing the buffer text or setting window-start does not update this value.

Return nil if there is no recorded value. (This can happen if the last redisplay of WINDOW was preempted, and did not
finish.) If UPDATE is non-nil, compute the up-to-date position
if it isn't already recorded.

Source Code

;; Defined in /usr/src/emacs/lisp/follow.el.gz
(defun follow-window-end (&optional window update)
  "Return position at which display currently ends in the Follow
Mode group of windows which includes WINDOW.

WINDOW must be a live window and defaults to the selected one.
This is updated by redisplay, when it runs to completion.
Simply changing the buffer text or setting `window-start' does
not update this value.

Return nil if there is no recorded value.  (This can happen if
the last redisplay of WINDOW was preempted, and did not
finish.)  If UPDATE is non-nil, compute the up-to-date position
if it isn't already recorded."
  (let* ((windows (follow-all-followers window))
         (last (car (last windows))))
    (when (and update follow-start-end-invalid)
      (follow-redisplay windows (car windows)))
    (window-end last update)))