[xmonad] emacs haskellers: r-stripping files becomes popular

[Valery V. Vorotyntsev]

Add the following lines to your ~/.emacs:

------- BEGIN OF ELISP CODE -------
;(global-set-key (kbd "<f9> s") 'delete-trailing-whitespace)

(defun delete-trailing-whitespace-if-confirmed ()
  "Delete all the trailing whitespace across the current buffer,
asking user for confirmation."
  (if (and (save-excursion (goto-char (point-min))
			   (re-search-forward "[[:space:]]$" nil t))
	   (y-or-n-p "Delete trailing whitespace? "))
      (delete-trailing-whitespace)))

(add-hook 'before-save-hook 'delete-trailing-whitespace-if-confirmed)
------- END OF ELISP CODE -------

Have fun!

--
vvv