僕が良く使う Haskell のための Elisp

(defun haskell-dquote-plusplus-plusplus-dquote (arg)
  "Insert \" ++  ++ \""
  (interactive "p")
  (insert "\" ++  ++ \"")
  (backward-char 5))

でこれを (local-set-key "\C-x\"" 'haskell-dquote-plusplus-plusplus-dquote) で便利便利！