(and (string-match text-regexp content-type-header) t)))))
(defcustom rmail-show-message-verbose-min 200000
- "Message size at which to show progress messages for displaying it."
+ "Message size at which to show progress messages for displaying it.
+Messages longer than this (in characters) will produce echo-area
+messages when Rmail processes such a message for display."
:type 'integer
:group 'rmail
:version "23.1")