From: David Bremner Date: Wed, 1 Jun 2016 01:12:21 +0000 (+2100) Subject: Re: [RFC2 Patch 5/5] lib: iterator API for message properties X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=48cd3f27812fbeade6f15bd53eee33488b331fb0;p=notmuch-archives.git Re: [RFC2 Patch 5/5] lib: iterator API for message properties --- diff --git a/19/f7a7c4175e63b2615da367f5336de04b47085d b/19/f7a7c4175e63b2615da367f5336de04b47085d new file mode 100644 index 000000000..4801ac661 --- /dev/null +++ b/19/f7a7c4175e63b2615da367f5336de04b47085d @@ -0,0 +1,88 @@ +Return-Path: +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 2753A6DE02A6 + for ; Tue, 31 May 2016 18:12:34 -0700 (PDT) +X-Virus-Scanned: Debian amavisd-new at cworth.org +X-Spam-Flag: NO +X-Spam-Score: -0.012 +X-Spam-Level: +X-Spam-Status: No, score=-0.012 tagged_above=-999 required=5 + tests=[AWL=-0.001, 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 FxEm43MNNb2q for ; + Tue, 31 May 2016 18:12:26 -0700 (PDT) +Received: from fethera.tethera.net (fethera.tethera.net [198.245.60.197]) + by arlo.cworth.org (Postfix) with ESMTPS id DC6056DE028C + for ; Tue, 31 May 2016 18:12:25 -0700 (PDT) +Received: from remotemail by fethera.tethera.net with local (Exim 4.84) + (envelope-from ) + id 1b7uhg-0002nI-Km; Tue, 31 May 2016 21:12:12 -0400 +Received: (nullmailer pid 12976 invoked by uid 1000); + Wed, 01 Jun 2016 01:12:21 -0000 +From: David Bremner +To: notmuch@notmuchmail.org +Subject: Re: [RFC2 Patch 5/5] lib: iterator API for message properties +In-Reply-To: <1464608999-14774-6-git-send-email-david@tethera.net> +References: <1463927339-5441-1-git-send-email-david@tethera.net> + <1464608999-14774-1-git-send-email-david@tethera.net> + <1464608999-14774-6-git-send-email-david@tethera.net> +User-Agent: Notmuch/0.22+28~gb9bf3f4 (http://notmuchmail.org) Emacs/24.5.1 + (x86_64-pc-linux-gnu) +Date: Tue, 31 May 2016 22:12:21 -0300 +Message-ID: <8760tthfuy.fsf@zancas.localnet> +MIME-Version: 1.0 +Content-Type: text/plain +X-BeenThere: notmuch@notmuchmail.org +X-Mailman-Version: 2.1.20 +Precedence: list +List-Id: "Use and development of the notmuch mail system." + +List-Unsubscribe: , + +List-Archive: +List-Post: +List-Help: +List-Subscribe: , + +X-List-Received-Date: Wed, 01 Jun 2016 01:12:34 -0000 + +David Bremner writes: + +> + notmuch_message_properties_t *list; +> + RUN(notmuch_message_add_property (message, "testkey1", "bob")); +> + RUN(notmuch_message_add_property (message, "testkey1", "testvalue2")); +> + RUN(notmuch_message_add_property (message, "testkey1", "alice")); +> + +> + for (list = notmuch_message_get_properties (message, "testkey1", TRUE); +> + notmuch_message_properties_valid (list); notmuch_message_properties_move_to_next (list)) { +> + printf("%s\n", notmuch_message_properties_value(list)); +> + } +> + notmuch_message_properties_destroy (list); + +I was thinking a bit about how to dump/restore these. + +The most upwardly compatible way that i thought of is something like + +#= msg-id key=val key=val + +i.e. duplicate the msg-id for messages with properties + +This would be ignored by old notmuch-restore. + +Otherwise, maybe something like + +msg-id -- +tag +tag # key=val key=val + +I'm not sure. this might crash old notmuch-restore. + +How important is backward compatibility, and how important is minimizing +dump size? It's a bit hard to predict the things people might use +message properties for, but for thread surgery, I would expect a small +number of messages with properties. + +d +