From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rafael <rvf0068@gmail.com>
Subject: Re: beamer_env tag issue with empty headlines
Date: Fri, 21 Aug 2015 11:43:22 -0500
Message-ID: <87wpwozj6d.fsf@gmail.com>
References: <CADuy5nprRUMAL9Gf1iwXTjSr6WyYasjgoJDLpyOZcivWBKQiEg@mail.gmail.com>
	<871tezbqrb.fsf@nicolasgoaziou.fr> <87k2sq29ah.fsf@gmail.com>
	<87fv3e69eq.fsf@nicolasgoaziou.fr> <877fop285u.fsf@gmail.com>
	<87zj1koo4n.fsf@nicolasgoaziou.fr>
Mime-Version: 1.0
Content-Type: text/plain
Return-path: <emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
Received: from eggs.gnu.org ([2001:4830:134:3::10]:40029)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <rvf0068@gmail.com>) id 1ZSpPl-000280-V5
	for emacs-orgmode@gnu.org; Fri, 21 Aug 2015 12:43:38 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <rvf0068@gmail.com>) id 1ZSpPh-0004rJ-Sd
	for emacs-orgmode@gnu.org; Fri, 21 Aug 2015 12:43:37 -0400
Received: from mail-ob0-x230.google.com ([2607:f8b0:4003:c01::230]:34879)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <rvf0068@gmail.com>) id 1ZSpPh-0004rD-OW
	for emacs-orgmode@gnu.org; Fri, 21 Aug 2015 12:43:33 -0400
Received: by obbwr7 with SMTP id wr7so63399429obb.2
	for <emacs-orgmode@gnu.org>; Fri, 21 Aug 2015 09:43:32 -0700 (PDT)
Received: from dell ([200.57.62.43]) by smtp.gmail.com with ESMTPSA id
	xx2sm4754539oeb.17.2015.08.21.09.43.29 for <emacs-orgmode@gnu.org>
	(version=TLSv1.2 cipher=RC4-SHA bits=128/128);
	Fri, 21 Aug 2015 09:43:32 -0700 (PDT)
In-Reply-To: <87zj1koo4n.fsf@nicolasgoaziou.fr> (Nicolas Goaziou's message of
	"Fri, 21 Aug 2015 13:51:52 +0200")
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-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org
To: Emacs-orgmode list <emacs-orgmode@gnu.org>

Nicolas Goaziou <mail@nicolasgoaziou.fr> writes:

> Rafael <rvf0068@gmail.com> writes:
>
>> I mean that I would like to have a new variable, say,
>> 'org-no-headlines-between-colons', that when set to t, would cause org
>> to treat any part of a heading between colons as a tag.
>
> My question was: what for? Do you have a (simple) use-case?

Just like the OP said: When exporting to beamer, there are some headings
that do not merit a named heading. Like columns. Or for example, in my
case, I have theorems without a name. Say:

*** 								  :B_theorem:
    :PROPERTIES:
    :BEAMER_env: theorem
    :END:
    Let \(X\) be a \(T_{1}\) space. Then \(X\) is regular if an only
    if given a point \(x\in X\) and a neighborhood \(U\) of \(x\)
    there is a neighborhood \(V\) of \(x\) such that
    \(\overline{V}\subseteq U\).

Or sometimes, in definitions, I could include a named heading, but it
looks redundant to me, as the defined term is already emphasized.

*** Normal space					       :B_definition:
    :PROPERTIES:
    :BEAMER_env: definition
    :END:
    Let \(X\) be a \(T_{1}\) space. We say that \(X\) is *normal* if for
    any \(F\subseteq X\) and \(G\subseteq X\) disjoint closed sets,
    there are disjoint open sets \(U,V\) such that 
    \(F\subseteq U\) and \(G\subseteq V\).

I do not think I will ever need two colons in a heading. Hence I think
the option to interpret anything between colons in a heading as a tag
would be useful.

Thanks for your answers,

Rafael