From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Subject: Re: tagged code blocks
Date: Fri, 24 Jun 2016 11:16:33 +0200
Message-ID: <87twgj7xqm.fsf@saiph.selenimh>
References: <576CED78.7070804@fuhrer.ch>
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]:51895)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <mail@nicolasgoaziou.fr>) id 1bGNEB-0000DN-17
	for emacs-orgmode@gnu.org; Fri, 24 Jun 2016 05:16:43 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <mail@nicolasgoaziou.fr>) id 1bGNE9-0002QJ-0c
	for emacs-orgmode@gnu.org; Fri, 24 Jun 2016 05:16:41 -0400
Received: from relay3-d.mail.gandi.net ([2001:4b98:c:538::195]:44721)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <mail@nicolasgoaziou.fr>) id 1bGNE8-0002QA-Q6
	for emacs-orgmode@gnu.org; Fri, 24 Jun 2016 05:16:40 -0400
In-Reply-To: <576CED78.7070804@fuhrer.ch> (claude fuhrer's message of "Fri, 24
	Jun 2016 10:21:12 +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"
	<emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org>
To: claude fuhrer <claude@fuhrer.ch>
Cc: emacs-orgmode@gnu.org

Hello,

claude fuhrer <claude@fuhrer.ch> writes:

> I'm trying to write a document where some source codes block may be 
> conditionally excluded from export.
>
> Here a small example of what I want, with the wrong syntax:
>
>
> ===========================================
> #+EXCLUDE_TAGS  solution
>
> #+begin_src java :tag question
>     public class Test {
>      // write java code here
>
>      }
> #+end_src
>
>
> and the solution is:
>
> #+begin_src java :tag solution
>       // the solution here
> #+end_src
> ==========================================
>
>
> So then, I only need to modify the EXCLUDE_TAGS to generate a document 
> with or without solution.

I would use drawers for this, but there are probably other ways:

  #+options: d:(not "SOLUTION")

  :QUESTION:
  #+begin_src emacs-lisp
  (+ 1 1)
  #+end_src
  :END:

  :SOLUTION:
  #+begin_src emacs-lisp
  10
  #+end_src
  :END:

where "d:t" would give you the full output.


Regards,

-- 
Nicolas Goaziou