Variable: message-forward-show-mml

message-forward-show-mml is a customizable variable defined in message.el.gz.

Value

best

Documentation

Non-nil means show forwarded messages as MML (decoded from MIME).

Otherwise, forwarded messages are unchanged. Can also be the symbol best to indicate that MML should be used, except when it is a bad idea to use MML. One example where it is a bad idea is when forwarding a signed or encrypted message, because converting MIME to MML would invalidate the digital signature.

This variable was added, or its default value changed, in Emacs 21.1.

Probably introduced at or before Emacs version 28.1.

Source Code

;; Defined in /usr/src/emacs/lisp/gnus/message.el.gz
(defcustom message-forward-show-mml 'best
  "Non-nil means show forwarded messages as MML (decoded from MIME).
Otherwise, forwarded messages are unchanged.
Can also be the symbol `best' to indicate that MML should be
used, except when it is a bad idea to use MML.  One example where
it is a bad idea is when forwarding a signed or encrypted
message, because converting MIME to MML would invalidate the
digital signature."
  :version "21.1"
  :group 'message-forwarding
  :type '(choice (const :tag "use MML" t)
		 (const :tag "don't use MML " nil)
		 (const :tag "use MML when appropriate" best)))