Variable: follow-start-end-invalid
follow-start-end-invalid is a buffer-local variable defined in
follow.el.gz.
Documentation
When non-nil, indicates follow-windows-start-end-cache is invalid.
Source Code
;; Defined in /usr/src/emacs/lisp/follow.el.gz
;;; Redisplay
;; Redraw all the windows on the screen, starting with the top window.
;; The window used as marker is WIN, or the selected window if WIN
;; is nil. Start every window directly after the end of the previous
;; window, to make sure long lines are displayed correctly.
(defvar-local follow-start-end-invalid t
"When non-nil, indicates `follow-windows-start-end-cache' is invalid.")