Variable: ruler-mode-hook

ruler-mode-hook is a customizable variable defined in ruler-mode.el.gz.

Value

nil

Documentation

Hook run after entering or leaving ruler-mode(var)/ruler-mode(fun).

No problems result if this variable is not bound. add-hook automatically binds it. (This is true for all hook variables.)

Source Code

;; Defined in /usr/src/emacs/lisp/ruler-mode.el.gz
;;;###autoload
(define-minor-mode ruler-mode
  "Toggle display of ruler in header line (Ruler mode)."
  :group 'ruler-mode
  :variable (ruler-mode
	     . (lambda (enable)
		 (when enable
		   (ruler--save-header-line-format))
		 (setq ruler-mode enable)))
  (if ruler-mode
      (add-hook 'post-command-hook 'force-mode-line-update nil t)
    ;; When `ruler-mode' is off restore previous header line format if
    ;; the current one is the ruler header line format.
    (when (eq header-line-format ruler-mode-header-line-format)
      (kill-local-variable 'header-line-format)
      (when (local-variable-p 'ruler-mode-header-line-format-old)
        (setq header-line-format ruler-mode-header-line-format-old)
        (kill-local-variable 'ruler-mode-header-line-format-old)))
    (remove-hook 'post-command-hook 'force-mode-line-update t)))