replaced delete-trailing-whitespace with whitespace-cleanup

modules/prelude-core.el

@@ -340,7 +340,7 @@ there's a region, all lines that region covers will be duplicated."
   (interactive)
   (prelude-indent-buffer)
   (prelude-untabify-buffer)
-  (delete-trailing-whitespace))
+  (whitespace-cleanup))
 
 (defun prelude-eval-and-replace ()
   "Replace the preceding sexp with its value."

modules/prelude-editor.el

@@ -169,9 +169,8 @@
 (require 'yasnippet) ;; not yasnippet-bundle
 (yas/initialize)
 
-;; dispense of trailing whitespace once and for all
-(add-hook 'before-save-hook
-          'delete-trailing-whitespace)
+;; keep the whitespace decent all the time
+(add-hook 'before-save-hook 'whitespace-cleanup)
 
 ;; projectile is a project management mode
 (require 'projectile)