Variable: mm-inline-font-lock
mm-inline-font-lock is a variable defined in mm-view.el.gz.
Value
t
Documentation
If non-nil, do font locking of inline media types that support it.
Probably introduced at or before Emacs version 28.1.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/mm-view.el.gz
;; Not a defcustom, since it's usually overridden by the callers of
;; the mm functions.
(defvar mm-inline-font-lock t
"If non-nil, do font locking of inline media types that support it.")