From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Subject: Re: Mutually-exclusive Org tags still inherit each other
Date: Sat, 09 Feb 2019 19:03:41 +0100
Message-ID: <874l9cdeki.fsf@nicolasgoaziou.fr>
References: <CAJBHbT6uZc4SuLpdkk_VkVs4itQOcw_9rwBDe8+GKe17ydYF5w@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Return-path: <emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
Received: from eggs.gnu.org ([209.51.188.92]:59681)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <mail@nicolasgoaziou.fr>) id 1gsWym-0007F3-E4
	for emacs-orgmode@gnu.org; Sat, 09 Feb 2019 13:03:53 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <mail@nicolasgoaziou.fr>) id 1gsWyl-0003BS-K2
	for emacs-orgmode@gnu.org; Sat, 09 Feb 2019 13:03:52 -0500
Received: from relay8-d.mail.gandi.net ([217.70.183.201]:50423)
	by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)
	(Exim 4.71) (envelope-from <mail@nicolasgoaziou.fr>)
	id 1gsWyl-00039S-Ce
	for emacs-orgmode@gnu.org; Sat, 09 Feb 2019 13:03:51 -0500
In-Reply-To: <CAJBHbT6uZc4SuLpdkk_VkVs4itQOcw_9rwBDe8+GKe17ydYF5w@mail.gmail.com>
	(Tina Russell's message of "Thu, 7 Feb 2019 16:42:22 -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: <http://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.org@gnu.org
Sender: "Emacs-orgmode"
	<emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
To: Tina Russell <tinakellyrussell@gmail.com>
Cc: emacs-orgmode@gnu.org

Hello,

Tina Russell <tinakellyrussell@gmail.com> writes:

> So, according to the Org documentation: =E2=80=9CYou can also group toget=
her tags
> that are mutually exclusive by using braces =E2=80=A6 Selecting a tag in =
a group of
> mutually exclusive tags will turn off any other tags from that group.
>
> But, if I do this=E2=80=A6
>
> #+TAGS: { place(c) container(c) object(o) }
>
> * Room :place:
> ** Box :container:
> *** Toy :object:
>
> =E2=80=A6and then use (org-get-tags) on =E2=80=9CToy,=E2=80=9D it reports=
 that it has the tags
> =E2=80=9Cplace=E2=80=9D, =E2=80=9Ccontainer=E2=80=9D, and =E2=80=9Cobject=
=E2=80=9D, even though these tags are all defined
> to be mutually exclusive! This is a problem,

Not really. `org-get-tags' is a low-level function, i.e., it has no
knowledge about tag groups or mutually exclusive tags.

> since turning off tag
> inheritance (for a document or for specific tags) seems to be an
> all-or-nothing affair. That means if I wanted to do this:
>
> * Room :place:
> ** Bookcase
> ** Dresser
> ** Desk
> ** Nightstand
> ** Closet
> *** Box :container:
> **** Toy :object:
>
> =E2=80=A6and then search for all headings with the tag =E2=80=9Cplace,=E2=
=80=9D either (with tag
> inheritance) everything, including =E2=80=9CBox=E2=80=9D and =E2=80=9CToy=
,=E2=80=9D will be returned, or
> (without tag inheritance) only =E2=80=9CRoom=E2=80=9D would be returned. =
(I could put a tag
> on every heading where I want it inherited, but that would both defeat the
> purpose of inheritance and make it difficult to manage large trees.)

You don't need to use mutually exclusive tags for this example. You
could search for "place-container", assuming tag inheritance.

Regards,

--=20
Nicolas Goaziou