Re: Defining minor mode with minor-mode condition

[Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>]

Stefan Monnier wrote:

> I actually often find it convenient to unconditionally
> "disable" first:
>
>     (define-minor-mode crucibulum-minor-mode
>       "Minor mode for assisting with superior & inferior typeface."
>       :lighter " Crucibulum"
>       (disable-texcom-typeface)
>       (disable-ricci-notation)
>       (when crucibulum-minor-mode
>         (enable-texcom-typeface)
>         (enable-ricci-notation)))
>
> the advantage is to avoid problems where, say,
> `enable-texcom-typeface` is not idempotent, so if you call
> (crucibulum-minor-mode 1) several times you might end up
> with multiple copies of the same thing added to a list.

Good!

What about one function to enable all and one to disable all?

No - then these functions can be called from the outside which
will/can add confusion, and worse, enable some of the minor
mode functionality but not actually enabling the minor
mode itself!

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