mode-line tooltips for minor modes

[Dan Nicolaescu]

I can't find the original thread where this was discussed...

Anyway, the proposed way to add a tooltip for minor-modes was to add 
:help "Blah blah" to define-minor-mode.

The patch below does that.  It stores the tooltip in the `help' property
of the minor mode symbol (better ideas are welcome).

Now, how can this be used?  Where is the code that can do 
(get 'help MINOR_MODE) and set the value there as a tooltip?



Index: emacs-lisp/easy-mmode.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/emacs-lisp/easy-mmode.el,v
retrieving revision 1.90
diff -u -3 -p -r1.90 easy-mmode.el
--- emacs-lisp/easy-mmode.el    8 Jan 2008 20:45:36 -0000       1.90
+++ emacs-lisp/easy-mmode.el    9 Apr 2008 06:18:16 -0000
@@ -169,6 +169,7 @@ For example, you could write
        (:type (setq type (list :type (pop body))))
        (:require (setq require (pop body)))
        (:keymap (setq keymap (pop body)))
+       (:help (setq help (pop body)))
        (t (push keyw extra-keywords) (push (pop body) extra-keywords))))
 
     (setq keymap-sym (if (and keymap (symbolp keymap)) keymap
@@ -250,6 +251,9 @@ With zero or negative ARG turn mode off.
         ;; Return the new setting.
         ,mode)
 
+       (when help
+        (put ',mode 'help ,help))
+
        ;; Autoloading a define-minor-mode autoloads everything
        ;; up-to-here.
        :autoload-end