(custom-set-variables
  ;; custom-set-variables was added by Custom.
  ;; If you edit it by hand, you could mess it up, so be careful.
  ;; Your init file should contain only one such instance.
  ;; If there is more than one, they won't work right.
 '(org-ellipsis "…"))

(require 'whitespace)

(defvar cycle-whitespace-modes-state 0
  "whitespace mode states:
   0 -> highlighting of stray whitespace, 72 & 80 column lines
   1 -> ws highlighting and identification for tabs and spaces (», ·)")
(make-variable-buffer-local 'cycle-whitespace-modes-state)

(defun my-cycle-whitespace-modes (&optional state)
  (interactive)
  (if state
      (setq cycle-whitespace-modes-state state)
    (setq cycle-whitespace-modes-state
          (mod (1+ cycle-whitespace-modes-state) 2)))
  (case cycle-whitespace-modes-state
    (0
     (whitespace-mode 0)
     )
    (otherwise
     (whitespace-mode 0)
     (whitespace-mode 1)
     (whitespace-toggle-options (list 'tab-mark 'space-mark))
     )))
(global-set-key [f10] 'my-cycle-whitespace-modes)