From mboxrd@z Thu Jan 1 00:00:00 1970 From: Samuel Wales Subject: join on dates Date: Thu, 8 Mar 2018 13:19:49 -0700 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:54813) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eu213-0005w4-1x for emacs-orgmode@gnu.org; Thu, 08 Mar 2018 15:19:53 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eu212-0000qM-A1 for emacs-orgmode@gnu.org; Thu, 08 Mar 2018 15:19:53 -0500 Received: from mail-io0-x229.google.com ([2607:f8b0:4001:c06::229]:44019) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eu211-0000pY-SR for emacs-orgmode@gnu.org; Thu, 08 Mar 2018 15:19:52 -0500 Received: by mail-io0-x229.google.com with SMTP id l12so1049822ioc.10 for ; Thu, 08 Mar 2018 12:19:51 -0800 (PST) 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: emacs-orgmode@gnu.org just wondering if something like this already exists. i was going to do this with a keyboard macro, but i'm not sure if those are quite powerful enough. i won't be coding it. i have subtrees "collection" and "results". they both contain inactive timestamps [with or without time or day of week]. all that matters here is date. i want to make sure that every collection is accounted for in results. but results sometimes does not list the exact date [it's a few days later when i receieve results]. or sometimes it lists it only in a link description. so i maybe want to do a join on date and then manually check. i want 3 lists. these lists should contain non-id links to the relevant headers in a and b. then i can manually check. 1] headers that have the same date in both a and b 2] headers that have a date in a but not b 3] headers that have a date in b but not a