current newsgroup name and then returns a suitable group name (or list
of names)."
:group 'gnus-message
- :type '(choice (string :tag "Group")
- (function)))
+ :type '(choice (const nil)
+ (function)
+ (string :tag "Group")
+ (repeat :tag "List of groups" (string :tag "Group"))))
(defcustom gnus-mailing-list-groups nil
"*If non-nil a regexp matching groups that are really mailing lists.