From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <n.goaziou@gmail.com>
Subject: Re: words starting with call_ confuse C-c C-c and export
Date: Sun, 15 Dec 2013 23:43:49 +0100
Message-ID: <87d2kxag62.fsf@gmail.com>
References: <87ob4ytoqf.wl%n142857@gmail.com> <87zjohvem7.fsf@gmail.com>
	<87iov16b3d.fsf@gmail.com> <87wqjhu5i1.fsf@gmail.com>
	<8761r14cjr.fsf@gmail.com> <87k3f7ad2w.fsf@gmail.com>
	<878uvl3if1.fsf@gmail.com>
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]:51138)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <n.goaziou@gmail.com>) id 1VsKPT-0005pi-9x
	for emacs-orgmode@gnu.org; Sun, 15 Dec 2013 17:43:47 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <n.goaziou@gmail.com>) id 1VsKPK-00082J-S1
	for emacs-orgmode@gnu.org; Sun, 15 Dec 2013 17:43:39 -0500
Received: from mail-ea0-x22a.google.com ([2a00:1450:4013:c01::22a]:62913)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <n.goaziou@gmail.com>) id 1VsKPK-00082E-Km
	for emacs-orgmode@gnu.org; Sun, 15 Dec 2013 17:43:30 -0500
Received: by mail-ea0-f170.google.com with SMTP id k10so1901258eaj.1
	for <emacs-orgmode@gnu.org>; Sun, 15 Dec 2013 14:43:29 -0800 (PST)
In-Reply-To: <878uvl3if1.fsf@gmail.com> (Eric Schulte's message of "Sun, 15
	Dec 2013 14:37:06 -0700")
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: Eric Schulte <schulte.eric@gmail.com>
Cc: emacs-orgmode@gnu.org

Hello,

Eric Schulte <schulte.eric@gmail.com> writes:

> Nicolas Goaziou <n.goaziou@gmail.com> writes:
>> In fact, they are already mandatory. The problem is different. Current
>> regexp is:
>>
>>   "\\([^\n]*?\\)call_\\([^()\n]+?\\)\\(\\[\\(.*?\\)\\]\\|\\(\\)\\)(\\([^\n]*?\\))\\(\\[\\(.*?\\)\\]\\)?"
>>
>> In particular, name is \\([^()\n]+?\\), and can include whitespace
>> characters. Therefore "call_name (args)" is valid. Isn't it too much
>> permissive in the context of an Org (i.e. textual) document?
>>
>> Also, couldn't we limit names to alphanumeric characters and, maybe,
>> some puctuation (e.g. hypen)?
>>
>
> Why don't we exclude whitespace from names.  Do you think that would be
> sufficient?

It would solve the current problem, but there are still many problematic
characters allowed (e.g., commas, curly brackets). I think there's no
point in allowing "call_{i=1}()" as a valid inline Babel call.

Furthermore, I don't think it's a real limitation to use alphanumeric
characters (and hyphen) only for a function name. I would even require
an alphabetic character as the first char, to avoid calls like:
"call_1()".

BTW, later in that regexp, there is a dubious "(\\([^\n]*?\\))". Is
there any reason not to use "(\\(.*?\\))" instead? Also, what about the
empty matcher "\\(\\)"? I don't get its use.


Regards,

-- 
Nicolas Goaziou