The (require 'rmail) already picks them up.
or more generally it may be any kind of expression that returns
a file name as a string.")
-;; These duplicate defvars in rmail.el, for the sake of gnus.
-(defvar rmail-default-file nil
- "*Default file name for \\[rmail-output].")
-(defvar rmail-default-rmail-file (expand-file-name "~/XMAIL")
- "*Default file name for \\[rmail-output-to-rmail-file].")
-
(defun rmail-output-menu (event)
"Output current message to another Rmail file, chosen with a menu."
(interactive "e")