From: "Clément Pit-Claudel" <cpitclaudel@gmail.com>
To: emacs-devel@gnu.org
Subject: Re: Should mode commands be idempotent?
Date: Wed, 20 Sep 2017 09:24:11 +0200 [thread overview]
Message-ID: <00b0c4e4-a02f-8c9f-ef52-7ad5a65798d1@gmail.com> (raw)
In-Reply-To: <jwv4lry1fzc.fsf-monnier+gmane.emacs.devel@gnu.org>
On 2017-09-20 00:29, Stefan Monnier wrote:
>> 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.
I'm not too sure: take the example of visual-line-mode: how do you make that idempotent without explicitly checking whether the mode has already been activated?
next prev parent reply other threads:[~2017-09-20 7:24 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-19 19:58 Should mode commands be idempotent? Philipp Stephani
2017-09-19 22:10 ` Clément Pit-Claudel
2017-09-19 22:29 ` Stefan Monnier
2017-09-20 7:24 ` Clément Pit-Claudel [this message]
2017-09-20 14:52 ` John Wiegley
2017-09-20 22:30 ` Stefan Monnier
2017-09-20 23:05 ` Drew Adams
2017-10-08 15:09 ` Philipp Stephani
2017-09-20 22:25 ` Stefan Monnier
2017-09-23 8:16 ` Clément Pit-Claudel
2017-09-23 14:17 ` Stefan Monnier
2017-09-23 20:37 ` Stefan Monnier
2017-09-19 22:58 ` Drew Adams
2017-09-20 3:10 ` Stefan Monnier
2017-09-20 17:52 ` Drew Adams
2017-09-21 1:11 ` Stefan Monnier
2017-09-21 5:22 ` Drew Adams
2017-09-21 18:28 ` Richard Stallman
[not found] ` <<9f11a3c6-b113-4bf6-9dab-f894b2ad77b5@default>
[not found] ` <<E1dv6D1-0006Jr-Fl@fencepost.gnu.org>
2017-09-22 15:54 ` Drew Adams
2017-09-23 0:39 ` Richard Stallman
2017-09-23 8:05 ` Clément Pit-Claudel
2017-09-24 17:26 ` Drew Adams
2017-09-25 7:03 ` Clément Pit-Claudel
2017-09-25 13:57 ` Drew Adams
2017-09-26 0:36 ` Stefan Monnier
2017-09-26 3:30 ` John Wiegley
2017-09-26 17:55 ` Drew Adams
2017-09-26 18:01 ` John Wiegley
2017-09-26 18:50 ` Drew Adams
2017-09-26 18:54 ` John Wiegley
2017-10-08 15:28 ` Philipp Stephani
2017-10-08 19:04 ` Stefan Monnier
2017-10-10 2:10 ` John Wiegley
2017-12-21 20:49 ` Philipp Stephani
2017-12-22 2:20 ` Stefan Monnier
2017-10-10 23:15 ` Herring, Davis
[not found] ` <<E1dvYUB-0007na-Mx@fencepost.gnu.org>
2017-09-24 17:26 ` Drew Adams
2017-09-25 22:06 ` Richard Stallman
2017-09-19 23:50 ` John Wiegley
2017-09-20 3:09 ` Stefan Monnier
2017-09-20 13:01 ` Richard Stallman
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