From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Subject: Re: Bug: org-element-at-point on headline does not contain :parent
 property [9.3 (release_9.3 @ /home/yantar92/.emacs.d/straight/build/org/)]
Date: Wed, 05 Feb 2020 13:55:52 +0100
Message-ID: <87blqd2nxj.fsf@nicolasgoaziou.fr>
References: <874ky0o471.fsf@yantar92-laptop.i-did-not-set--mail-host-address--so-tickle-me>
 <87wo91bixl.fsf@gnu.org> <877e11tl3a.fsf@localhost>
Mime-Version: 1.0
Content-Type: text/plain
Return-path: <emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane-mx.org@gnu.org>
Received: from eggs.gnu.org ([2001:470:142:3::10]:44852)
 by lists.gnu.org with esmtp (Exim 4.90_1)
 (envelope-from <mail@nicolasgoaziou.fr>) id 1izKE0-0005kU-JI
 for emacs-orgmode@gnu.org; Wed, 05 Feb 2020 07:56:13 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
 (envelope-from <mail@nicolasgoaziou.fr>) id 1izKDz-0008AW-7y
 for emacs-orgmode@gnu.org; Wed, 05 Feb 2020 07:56:12 -0500
Received: from relay12.mail.gandi.net ([217.70.178.232]:38117)
 by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)
 (Exim 4.71) (envelope-from <mail@nicolasgoaziou.fr>)
 id 1izKDz-0007rI-1c
 for emacs-orgmode@gnu.org; Wed, 05 Feb 2020 07:56:11 -0500
In-Reply-To: <877e11tl3a.fsf@localhost> (Ihor Radchenko's message of "Wed, 05
 Feb 2020 17:55:05 +0800")
List-Id: "General discussions about Org-mode." <emacs-orgmode.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/emacs-orgmode>,
 <mailto:emacs-orgmode-request@gnu.org?subject=unsubscribe>
List-Archive: <https://lists.gnu.org/archive/html/emacs-orgmode>
List-Post: <mailto:emacs-orgmode@gnu.org>
List-Help: <mailto:emacs-orgmode-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/emacs-orgmode>,
 <mailto:emacs-orgmode-request@gnu.org?subject=subscribe>
Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane-mx.org@gnu.org
Sender: "Emacs-orgmode"
 <emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane-mx.org@gnu.org>
To: Ihor Radchenko <yantar92@gmail.com>
Cc: emacs-orgmode@gnu.org

Hello,

Ihor Radchenko <yantar92@gmail.com> writes:

>> Probably the docstring needs to be adapted - Nicolas knows this area
>> better than me.
>
> Do you mean that :parent property may not always be present?

`org-element-at-point' returns only a partial parse tree. It never goes
higher than the current top-level element, i.e., from an element, you
cannot go up to the headline just following :parent.

Luckily, headlines are exactly where you do _not_ need Element library.
`org-back-to-heading' and `org-up-heading-safe' will always be faster,
and as accurate. I.e., the code operating on headlines is usually
distinct from the code handling other elements.

> If so, it is quite disappointing. It would be helpful to be able to find
> parent of any element at point (especially, in conjunction with
> org-element-cache). At least, optionally. 

You can parse the full document and get all the :parent properties
filled. That's not the job for `org-element-at-point'.

> I was counting on this feature to try speeding up my agenda generation
> (using org-element-cache).

Note that `org-element-cache' was disabled a while ago because it could
introduce freezes. I think this is related to how this part handles
`before-change-functions' and `after-change-functions'. Anyway, YMMV.

Regards,

-- 
Nicolas Goaziou