+(setq message-signature-separator "^-- \\(\\|\\[mdw\\]\\)$"
+ message-yank-prefix "> "
+ message-yank-cited-prefix "> "
+ message-indent-citation-function '(message-indent-citation
+ mdw-trim-spaces-after-citing))
+
+(defun mdw-trim-spaces-after-citing ()
+ (save-excursion
+ (save-restriction
+ (narrow-to-region (point) (mark t))
+ (while (re-search-forward "^> +$" nil t)
+ (replace-match ">")))))