From mboxrd@z Thu Jan 1 00:00:00 1970 From: Samium Gromoff <_deepfire@feelingofgreen.ru> Subject: Re: Shared subtrees? Date: Tue, 07 Dec 2010 00:17:32 +0300 Message-ID: <87ei9ua9eb.fsf@auriga.feelingofgreen.ru> References: <87y6843wiu.fsf@fastmail.fm> <87k4jn9s1l.fsf@auriga.feelingofgreen.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from [140.186.70.92] (port=54266 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PPiRG-0003W1-Ja for emacs-orgmode@gnu.org; Mon, 06 Dec 2010 16:17:39 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <_deepfire@feelingofgreen.ru>) id 1PPiRF-0002Pl-ID for emacs-orgmode@gnu.org; Mon, 06 Dec 2010 16:17:38 -0500 Received: from [80.92.100.69] (port=54454 helo=feelingofgreen.ru) by eggs.gnu.org with smtp (Exim 4.71) (envelope-from <_deepfire@feelingofgreen.ru>) id 1PPiRF-0002O3-12 for emacs-orgmode@gnu.org; Mon, 06 Dec 2010 16:17:37 -0500 In-Reply-To: List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org To: Samuel Wales Cc: Org Mode On Mon, 6 Dec 2010 10:43:17 -0700, Samuel Wales wrote: > Perhaps you can provide examples? I am not sure if you are referring > to virtual nodes (virtual regions do not exist in current Emacs, > although it would be good; kludges might be possible with e.g. > overlays but are not ideal), graph theoretic structures (ID markers > implement this in a general way), including text in export (we've > discussed it but not come up with a general solution yet), or > something else. With ten minutes of googling I couldn't figure out what virtual nodes correspond to, in the context of Emacs (modulo the somewhat irrelevant Info's virtual-nodes), besides them sounding like something vaguely useful in implementing the feature I had in mind. Virtual regions (a presentation of something of synthetic nature, which is not directly backed by a buffer's region) sound exactly like the best building block I'd imagine for the implementation of the said feature. I did refer to the concept of 'partial order', a graph-theoretic structure indeed. I did so to illustrate the difference with the usual tree, where no branches ever join, so none of them ever share identical children. I did not refer to including text in export, I'm more interested in the editing of the partial order. -- regards, Samium Gromoff -- "Actually I made up the term 'object-oriented', and I can tell you I did not have C++ in mind." - Alan Kay (OOPSLA 1997 Keynote)