From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Masterson Subject: Re: CUSTOM_ID vs ID Date: Fri, 2 Aug 2019 04:54:55 +0000 Message-ID: References: <87k1c2mvfq.fsf@nicolasgoaziou.fr> <87r269tkfk.fsf@nicolasgoaziou.fr> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Received: from eggs.gnu.org ([2001:470:142:3::10]:60204) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1htPak-0001GF-Sz for emacs-orgmode@gnu.org; Fri, 02 Aug 2019 00:54:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1htPaj-0004EA-Sl for emacs-orgmode@gnu.org; Fri, 02 Aug 2019 00:54:58 -0400 Received: from mail-oln040092004035.outbound.protection.outlook.com ([40.92.4.35]:59991 helo=NAM02-CY1-obe.outbound.protection.outlook.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1htPaj-0004As-Db for emacs-orgmode@gnu.org; Fri, 02 Aug 2019 00:54:57 -0400 In-Reply-To: <87r269tkfk.fsf@nicolasgoaziou.fr> (Nicolas Goaziou's message of "Mon, 29 Jul 2019 08:38:07 +0200") Content-Language: en-US List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Sender: "Emacs-orgmode" To: Nathan Neff Cc: emacs-orgmode Nicolas Goaziou writes: > David Masterson writes: > >> Can you talk a little bit about how IDs are generated so that they are >> absolutely unique? > > See `org-id-new'. By default, it uses "uuidgen" command. > >> IDs sound like something that would be useful for synchronizing >> information between two (or more) separate Org systems - the ID could be >> updated whenever a change occurs and then used to determine what needs >> synchronization. True? > > I think this is different. ID property is meant to never change once > created. If you update it, you lose the reference to the headline, which > defeats the intended purpose. Ah. Gotcha. -- David