From: Sam Steingold <sds@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: reading compile.el, modifying settings
Date: Thu, 05 May 2011 17:08:00 -0400 [thread overview]
Message-ID: <sv39ksyhxr.fsf@tbox.wtc.algo> (raw)
In-Reply-To: 87sjstufp9.fsf@member.fsf.org
Hi Tassilo,
> * Tassilo Horn <gnffvyb@zrzore.sfs.bet> [2011-05-05 21:09:54 +0200]:
> Sam Steingold <sds@gnu.org> writes:
>> However, the _effect_ of setq on a variable defined with defcustom is
>> different - it is not respected by emacs on the same level as
>> custom-set-variables.
>> At least it was not a few years ago, when I had the same problem - my
>> setting being ignored - as Paul is having now.
>
> If that really happens, I'd consider it a bug.
Agreed.
However, these bugs are hard to reproduce, as you have just discovered
yourself.
It is much easier to work around them.
>> 1. some packages use symbol properties in addition to the symbol value,
>> these are modified by custom-set-variables automatically
>
> ,----
> | ;; foo is not defined before
> | (setq foo 17)
> | ;; now load its defcustom
> | (defcustom foo 111
> | "Bla bla")
> | ;; still has my value plus the props of the defcustom
> | (cons foo (symbol-plist 'foo))
> | ==> (17 standard-value (111) custom-requests nil variable-documentation "Bla bla")
> `----
that's my point - a custom variable is much more than just a symbol-value.
>> In short, the rule of thumb is: do not use setq on custom variables,
>> use custom-set-variables instead.
>
> I really don't buy that.
That's just as well because I am not selling anything.
I wonder, however, if my solution solves Paul's problem.
> My emacs is highly customized in plain lisp only, so that I can
> comment what I do and structure it according to my likings.
Mine too - and I use custom-set-variables for all custom vars in ~/.emacs.
And, of course, both setq and custom-set-variables are "plain lisp".
--
Sam Steingold (http://sds.podval.org/) on CentOS release 5.6 (Final) X 11.0.60900031
http://www.memritv.org http://camera.org http://mideasttruth.com
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There are 3 kinds of people: those who can count and those who cannot.
next prev parent reply other threads:[~2011-05-05 21:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-03 14:03 reading compile.el, modifying settings Paul Graham
2011-05-05 10:44 ` Tassilo Horn
2011-05-12 12:49 ` Oleksandr Gavenko
2011-05-05 16:31 ` Sam Steingold
2011-05-05 18:15 ` Tassilo Horn
2011-05-05 18:34 ` Sam Steingold
2011-05-05 19:09 ` Tassilo Horn
2011-05-05 21:08 ` Sam Steingold [this message]
2011-05-06 7:13 ` Tassilo Horn
2011-05-05 19:48 ` Tassilo Horn
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