On Nov 16, 2007 11:14 AM, 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 -------
Nice! Is there a way to have this only run if the current buffer is in haskell-mode? I'd add it myself but I've not yet taken the plunge to being an elisp hacker. -Brent