Re: turning on minor modes from hooks

[Miles Bader <miles@gnu.org>]

Dan Nicolaescu <dann@ics.uci.edu> writes:
> (add-hook 'text-mode-hook   'auto-fill-mode)
>
> This avoids defining extra functions just for the purpose of being able
> to call them from hooks.
>
> Not sure how feasible is to have a clean implementation of such a feature...

Stephen has long advocated that non-interactive invocation of mode
commands should always turn on the mode instead of toggling.

I agree with that:  I think the vast majority of uses in code do not use
the toggling anyway, and while there probably are a few uses which would
be broken by such a change, I think there would be far _more_
currently-incorrect uses that would be _fixed_ by such a change (where
someone uses (add-hook 'foo-hook 'ack-mode) not realizing that it really
toggles instead of turning on).

-miles

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