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From: Drew Adams <drew.adams@oracle.com>
To: Stefan Kangas <stefankangas@gmail.com>,
	Lars Ingebrigtsen <larsi@gnus.org>
Cc: 25581@debbugs.gnu.org
Subject: bug#25581: 25.1; Incorrect statement in (elisp) `Hooks'
Date: Mon, 24 Aug 2020 09:18:27 -0700 (PDT)	[thread overview]
Message-ID: <9a1b7301-09fd-4df0-be17-e20b4ebbe36e@default> (raw)
In-Reply-To: <CADwFkmnNsJMRQQ+vhVcCMJoj2OudQku39xzgXnWmZcbUHxhdvA@mail.gmail.com>

> I think the confusing thing here is that there are two ways to modify
> these single function hooks: setq and add-function.

`setq' can always be used to change a variable's value.
But that doesn't mean it's always the best thing to use.

See earlier posts in this thread, about variables whose
value is a "single function".  They can be hooks, but
need not be hooks (and this, regardless of their names).

Some vars are _intended_ to only ever have a single
function as their value.  Some vars are _intended_ to
have a value that can be a single function or a list of
functions.  Some of the latter kind of variables are
hooks.  (Maybe _all_ of the latter can be treated as
hooks; maybe not.)

`add-hook' is the best way to add a function to a hook.
This is so, regardless of its name.  That you can use
`setq' or something else instead doesn't make that TRT.





  parent reply	other threads:[~2020-08-24 16:18 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-30 16:51 bug#25581: 25.1; Incorrect statement in (elisp) `Hooks' Drew Adams
2017-01-31  3:05 ` npostavs
2017-01-31  3:36   ` Mark Oteiza
2017-01-31  4:06     ` Drew Adams
2017-01-31  3:55   ` Drew Adams
2017-01-31  4:16     ` npostavs
2017-01-31 16:02       ` Drew Adams
2017-02-01  3:35         ` npostavs
2017-02-01 17:01           ` Drew Adams
2017-02-04 21:00             ` npostavs
2017-02-05  2:11               ` Drew Adams
2017-02-10  1:42                 ` npostavs
2017-02-10  3:00                   ` Drew Adams
2020-10-11  2:26               ` Lars Ingebrigtsen
2020-10-11 14:12                 ` Drew Adams
2020-08-24 15:22 ` Lars Ingebrigtsen
2020-08-24 15:54   ` Stefan Kangas
2020-08-24 15:58     ` Lars Ingebrigtsen
2020-08-24 16:20       ` Drew Adams
2020-08-24 16:13     ` Drew Adams
2020-08-24 16:18     ` Drew Adams [this message]
2020-08-26  1:50       ` Richard Stallman
2020-08-26 18:27         ` Drew Adams
2020-08-24 16:01   ` Drew Adams

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