* lisp/net/mailcap.el (mailcap-user-mime-data): Make the doc
string reflect the actual structure (bug#56568).
(defcustom mailcap-user-mime-data nil
"A list of viewers preferred for different MIME types.
-The elements of the list are alists of the following structure
+The elements of the list are lists of the following structure
- ((viewer . VIEWER)
- (type . MIME-TYPE)
- (test . TEST))
+ (VIEWER MIME-TYPE TEST)
where VIEWER is either a Lisp command, e.g., a major mode, or a
string containing a shell command for viewing files of the