From: Jorge <jorge13515@gmail.com>
To: Drew Adams <drew.adams@oracle.com>
Cc: "Pascal J. Bourguignon" <pjb@informatimago.com>, help-gnu-emacs@gnu.org
Subject: Re: How to customize an option to a dynamic value (computed by lisp form)
Date: Fri, 26 Aug 2016 09:54:49 -0300 [thread overview]
Message-ID: <CAJR3Qnc-9e0DcYZjwii_6CXdZYc1askY3vD=6WuGYqMtJ2Ce=A@mail.gmail.com> (raw)
In-Reply-To: <83832586-765e-4df4-917a-98458247d829@default>
On 25 August 2016 at 17:54, Drew Adams <drew.adams@oracle.com> wrote:
>> How can I elegantly combine both? And shouldn't elisp
>> provide a convenient command for this?
>
> Try to specify the behavior you want (more clearly). Presumably
> you are looking for a way, using Lisp (non-interactively), to set
> an option value and get all of the behavior that you get when you
> set it using the Customize UI (:set, :type, etc. control).
I want one elisp function that, even when called non-interactively,
respects custom-set and does type-checking.
> A variable value is always "static", by definition of the word "value".
> It's not clear (to me) just what you are looking for.
I am sorry. By "static value" I meant "literal".
>
> BTW, you can easily check whether an option has been changed outside
> Customize, i.e., using something like `setq' and not something like
> `customize-set-variable', by invoking code such as this (taken from
> `customize-rogue', which lets you open Customize for all such options):
>
> (defun rogue-option-p (symbol)
> (let ((cval (or (get symbol 'customized-value)
> (get symbol 'saved-value)
> (get symbol 'standard-value))))
> (and cval ;Declared with defcustom.
> (default-boundp symbol) ;Has a value.
> (not (equal (eval (car cval))
> ;; Which does not match customize.
> (default-value symbol))))))
Thank you for sharing this. But for now, I think I will rely on my
memory (I just have to remember that three options are customized on
org-init.el, and I can memorize the fact that options that use the
value of org-directory are configured in org-init.el).
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next prev parent reply other threads:[~2016-08-26 12:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-23 20:26 How to customize an option to a dynamic value (computed by lisp form) Jorge
2016-08-24 17:50 ` Pascal J. Bourguignon
2016-08-25 17:55 ` Jorge
2016-08-25 20:54 ` Drew Adams
2016-08-26 12:54 ` Jorge [this message]
2016-08-26 13:26 ` Jorge
2016-08-26 14:28 ` Drew Adams
2016-08-26 19:02 ` Jorge
2016-08-26 20:18 ` Jorge
2016-08-26 20:59 ` Drew Adams
2016-08-27 11:50 ` tomas
2016-08-30 20:42 ` Jorge
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