Function: rmail-modify-format

rmail-modify-format is a byte-compiled function defined in rmail.el.gz.

Signature

(rmail-modify-format)

Documentation

Warn if important modifications would change Rmail file's format.

Source Code

;; Defined in /usr/src/emacs/lisp/mail/rmail.el.gz
(defun rmail-modify-format ()
  "Warn if important modifications would change Rmail file's format."
  (with-current-buffer rmail-buffer
    (and rmail-was-converted
	 ;; If it's already modified, don't warn again.
	 (not rmail-seriously-modified)
	 (not
	  (yes-or-no-p
	   (message "After this, %s would be saved in mbox format.  Proceed? "
		    (buffer-name))))
	 (error "Aborted"))
    (setq rmail-seriously-modified t)))