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Re: Should mode commands be idempotent?

From: Stefan Monnier
Subject: Re: Should mode commands be idempotent?
Date: Tue, 19 Sep 2017 18:29:09 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux)

> Is there a way inside of a minor mode to check if it was already
> enabled before the current call, short of having a second variable
> for that?

It shouldn't be needed: the idempotence should emerge naturally from the
way the code is written, rather than being the result of special tests
to detect that particular situation.


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