Return-Path: <bremner@tethera.net>
X-Original-To: notmuch@notmuchmail.org
Delivered-To: notmuch@notmuchmail.org
Received: from localhost (localhost [127.0.0.1])
 by arlo.cworth.org (Postfix) with ESMTP id 05E256DE0032
 for <notmuch@notmuchmail.org>; Sat, 19 Mar 2016 18:38:49 -0700 (PDT)
X-Virus-Scanned: Debian amavisd-new at cworth.org
X-Spam-Flag: NO
X-Spam-Score: -0.03
X-Spam-Level: 
X-Spam-Status: No, score=-0.03 tagged_above=-999 required=5 tests=[AWL=-0.019,
  SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] autolearn=disabled
Received: from arlo.cworth.org ([127.0.0.1])
 by localhost (arlo.cworth.org [127.0.0.1]) (amavisd-new, port 10024)
 with ESMTP id fedzSwdkBxu3 for <notmuch@notmuchmail.org>;
 Sat, 19 Mar 2016 18:38:38 -0700 (PDT)
Received: from fethera.tethera.net (fethera.tethera.net [198.245.60.197])
 by arlo.cworth.org (Postfix) with ESMTPS id 0CCA96DE0008
 for <notmuch@notmuchmail.org>; Sat, 19 Mar 2016 18:38:38 -0700 (PDT)
Received: from remotemail by fethera.tethera.net with local (Exim 4.84)
 (envelope-from <bremner@tethera.net>) id 1ahSKj-0001Vf-VL
 for notmuch@notmuchmail.org; Sat, 19 Mar 2016 21:39:09 -0400
Received: (nullmailer pid 17753 invoked by uid 1000);
 Sun, 20 Mar 2016 01:38:32 -0000
From: David Bremner <david@tethera.net>
To: notmuch@notmuchmail.org
Subject: single argument date: queries
Date: Sat, 19 Mar 2016 22:38:21 -0300
Message-Id: <1458437904-17677-1-git-send-email-david@tethera.net>
X-Mailer: git-send-email 2.7.0
X-BeenThere: notmuch@notmuchmail.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: "Use and development of the notmuch mail system."
 <notmuch.notmuchmail.org>
List-Unsubscribe: <https://notmuchmail.org/mailman/options/notmuch>,
 <mailto:notmuch-request@notmuchmail.org?subject=unsubscribe>
List-Archive: <http://notmuchmail.org/pipermail/notmuch/>
List-Post: <mailto:notmuch@notmuchmail.org>
List-Help: <mailto:notmuch-request@notmuchmail.org?subject=help>
List-Subscribe: <https://notmuchmail.org/mailman/listinfo/notmuch>,
 <mailto:notmuch-request@notmuchmail.org?subject=subscribe>
X-List-Received-Date: Sun, 20 Mar 2016 01:38:49 -0000

These rely on a feature called "Field Processors" that needs a pretty
new version of xapian, so it's optional. I haven't thought through all
the issues involved with having optional features in (lib)notmuch. I
guess it would make sense to have some API that tells you what
optional features are available. At least in this case there doesn't
seem to be any relationship with database features. We also need to
figure out how to document optional features; presumably it would be
helpful to tell people how to interrogate notmuch (CLI) to see if a
given feature is supported.

d