bug#9659: 24.0.50; turn-on function of `define-globalized-minor-mode' doesn't see some hook-set vars

[Stefan Monnier]

> I don't know if this is expected behaviour, but in recent Emacs
> versions the following strategy to selectively deactivate a minor mode
> in some major mode combinations does not work anymore.  This used to
> work fine in Emacs 22 and 23.

Indeed, it's on purpose, ironically it's so that you can do what you're doing:

2010-04-28  Stefan Monnier  <monnier@iro.umontreal.ca>

        Make it possible to locally disable a globally enabled mode.
        * simple.el (fundamental-mode): Run fundamental-mode-hook.
        * emacs-lisp/derived.el (define-derived-mode): Use fundamental-mode
        rather than kill-all-local-variables so it runs fundamental-mode-hook.
        * emacs-lisp/easy-mmode.el (define-globalized-minor-mode):
        Use fundamental-mode-hook to run MODE-enable-in-buffers earlier, so
        that subsequent hooks get a chance to disable it.

I.e. with this change, you can skip dummy-mode-dont-turn-on and just do:

  (add-hook 'text-mode-hook #'(lambda () (dummy-mode -1)))
  (add-hook 'help-mode-hook #'(lambda () (dummy-mode -1)))


-- Stefan