Variable: mm-automatic-display
mm-automatic-display is a customizable variable defined in
mm-decode.el.gz.
Value
("text/plain" "text/enriched" "text/richtext" "text/html" "text/x-verbatim" "text/calendar" "text/x-vcard" "image/.*" "message/delivery-status" "multipart/.*" "message/rfc822" "text/x-patch" "text/dns" "application/pgp-signature" "application/emacs-lisp" "application/x-emacs-lisp" "application/x-pkcs7-signature" "application/pkcs7-signature" "application/x-pkcs7-mime" "application/pkcs7-mime" "application/pgp\\'" "text/x-org")
Documentation
A list of MIME types to be displayed automatically.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/mm-decode.el.gz
(defcustom mm-automatic-display
'("text/plain" "text/enriched" "text/richtext" "text/html" "text/x-verbatim"
"text/calendar"
"text/x-vcard" "image/.*" "message/delivery-status" "multipart/.*"
"message/rfc822" "text/x-patch" "text/dns" "application/pgp-signature"
"application/emacs-lisp" "application/x-emacs-lisp"
"application/x-pkcs7-signature"
"application/pkcs7-signature" "application/x-pkcs7-mime"
"application/pkcs7-mime"
;; Mutt still uses this even though it has already been withdrawn.
"application/pgp\\'"
"text/x-org")
"A list of MIME types to be displayed automatically."
:type '(repeat regexp)
:group 'mime-display)