bug#11299: 24.1.50; Make `customize-mode' work for minor modes too, or define`customize-minor-mode'

[Drew Adams]

E.g., something like this:

(defun customize-mode (mode)
    "Customize options related to a major or minor mode.
By default the current major is used.
With a prefix argument or if the current major mode has no known group,
you are prompted for the MODE to customize."
    (interactive
     (list
      (let ((completion-regexp-list  '("-mode\\'"))
            (group                   (custom-group-of-mode major-mode)))
        (if (and group  (not current-prefix-arg))
            major-mode
          (intern (completing-read
                    "Mode: " obarray 'custom-group-of-mode
                    t nil nil (and group  (symbol-name major-mode))))))))
    (customize-group (custom-group-of-mode mode)))