(while (search-forward "\nFrom " nil t)
(forward-char -5)
(insert ?>)))
+ ;; Make sure the message ends with two newlines
+ (goto-char (point-max))
+ (unless (looking-back "\n\n")
+ (insert "\n"))
;; Write it to the output file, suitably encoded.
(let ((coding-system-for-write coding))
(write-region (point-min) (point-max) to-file t