From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bastien <bzg@gnu.org>
Subject: Re: How do I define `org-agenda-cmp-user-defined'?
Date: Fri, 18 Apr 2014 15:21:17 +0200
Message-ID: <87wqemkc36.fsf@bzg.ath.cx>
References: <m2mwfi51fm.fsf@polytechnique.org>
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]:51607)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <bastienguerry@gmail.com>) id 1Wb8jO-0003li-6S
	for emacs-orgmode@gnu.org; Fri, 18 Apr 2014 09:21:31 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <bastienguerry@gmail.com>) id 1Wb8jI-0004DT-I0
	for emacs-orgmode@gnu.org; Fri, 18 Apr 2014 09:21:26 -0400
Received: from mail-we0-x232.google.com ([2a00:1450:400c:c03::232]:63939)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <bastienguerry@gmail.com>) id 1Wb8jI-0004D9-BG
	for emacs-orgmode@gnu.org; Fri, 18 Apr 2014 09:21:20 -0400
Received: by mail-we0-f178.google.com with SMTP id u56so1545346wes.37
	for <emacs-orgmode@gnu.org>; Fri, 18 Apr 2014 06:21:19 -0700 (PDT)
In-Reply-To: <m2mwfi51fm.fsf@polytechnique.org> (Alan Schmitt's message of
	"Fri, 18 Apr 2014 13:20:29 +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: Alan Schmitt <alan.schmitt@polytechnique.org>
Cc: emacs-orgmode <emacs-orgmode@gnu.org>

Hi Alan,

Alan Schmitt <alan.schmitt@polytechnique.org> writes:

> More precisely, given this:
>
> ,-----------------------------------------------------------------
> | (defun org-review-schedule-compare (a b)                        
> |   "Compares the date of scheduled review for the two agenda     
> |   entries. Returns +1 if A has been scheduled for longer, nil if
> |   they have been scheduled for the same length of time, and -1  
> |   otherwise."                                                   
> |   ())                                                           
> `-----------------------------------------------------------------
>
> how can I access a property of `a' and `b'?

See how `org-cmp-alpha' works.

> (The documentation tells me they are "agenda entries", but it's not
> clear how I can access their information.)

You can access agenda entries information by text properties.

Create an agenda view, then C-u C-x = on some entry: you will see
the list of available text properties that you can manipulate.

-- 
 Bastien