Variable: global-whitespace-mode-hook
global-whitespace-mode-hook is a customizable variable defined in
whitespace.el.gz.
Value
nil
Documentation
Hook run after entering or leaving global-whitespace-mode(var)/global-whitespace-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/whitespace.el.gz
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;; User commands - Global mode
;;;###autoload
(define-minor-mode global-whitespace-mode
"Toggle whitespace visualization globally (Global Whitespace mode).
See also `whitespace-style', `whitespace-newline' and
`whitespace-display-mappings'."
:lighter " WS"
:init-value nil
:global t
:group 'whitespace
(cond
(noninteractive ; running a batch job
(setq global-whitespace-mode nil))
(global-whitespace-mode ; global-whitespace-mode on
(save-current-buffer
(add-hook 'find-file-hook 'whitespace-turn-on-if-enabled)
(add-hook 'after-change-major-mode-hook 'whitespace-turn-on-if-enabled)
(dolist (buffer (buffer-list)) ; adjust all local mode
(set-buffer buffer)
(unless whitespace-mode
(whitespace-turn-on-if-enabled)))))
(t ; global-whitespace-mode off
(save-current-buffer
(remove-hook 'find-file-hook 'whitespace-turn-on-if-enabled)
(remove-hook 'after-change-major-mode-hook 'whitespace-turn-on-if-enabled)
(dolist (buffer (buffer-list)) ; adjust all local mode
(set-buffer buffer)
(unless whitespace-mode
(whitespace-turn-off)))))))