From: Jani Nikula Date: Tue, 7 Oct 2014 11:16:41 +0000 (+0200) Subject: Re: Backward scrolling notmuch_messages_t and notmuch_threads_t X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=ee4122b1cfd22048cae897a5ecdb4b05b8c46204;p=notmuch-archives.git Re: Backward scrolling notmuch_messages_t and notmuch_threads_t --- diff --git a/00/ee70ffe91de0f8249e3bd52cbd984034778140 b/00/ee70ffe91de0f8249e3bd52cbd984034778140 new file mode 100644 index 000000000..30fdce686 --- /dev/null +++ b/00/ee70ffe91de0f8249e3bd52cbd984034778140 @@ -0,0 +1,112 @@ +Return-Path: +X-Original-To: notmuch@notmuchmail.org +Delivered-To: notmuch@notmuchmail.org +Received: from localhost (localhost [127.0.0.1]) + by olra.theworths.org (Postfix) with ESMTP id 66F8D431FB6 + for ; Tue, 7 Oct 2014 04:16:34 -0700 (PDT) +X-Virus-Scanned: Debian amavisd-new at olra.theworths.org +X-Spam-Flag: NO +X-Spam-Score: -0.7 +X-Spam-Level: +X-Spam-Status: No, score=-0.7 tagged_above=-999 required=5 + tests=[RCVD_IN_DNSWL_LOW=-0.7] autolearn=disabled +Received: from olra.theworths.org ([127.0.0.1]) + by localhost (olra.theworths.org [127.0.0.1]) (amavisd-new, port 10024) + with ESMTP id 6VjD0XZW7lZR for ; + Tue, 7 Oct 2014 04:16:28 -0700 (PDT) +Received: from mail-wi0-f182.google.com (mail-wi0-f182.google.com + [209.85.212.182]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) + (No client certificate requested) + by olra.theworths.org (Postfix) with ESMTPS id 08544431FAF + for ; Tue, 7 Oct 2014 04:16:27 -0700 (PDT) +Received: by mail-wi0-f182.google.com with SMTP id n3so7510324wiv.3 + for ; Tue, 07 Oct 2014 04:16:25 -0700 (PDT) +X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; + d=1e100.net; s=20130820; + h=x-gm-message-state:from:to:subject:in-reply-to:references + :user-agent:date:message-id:mime-version:content-type + :content-transfer-encoding; + bh=kBbQzoymrs8Q1WTEpz4x5mNi2WR4b2hIPLz+skP7dc8=; + b=CP0sk+sNyyKNstbR/7F9Iw6UfyqJvRxAQctZGjvNes3fLpa/Yqd7ITNz9xq+fAD93H + ZU/EoXGwRdfzz7QDcbFVAiq4B2VboUJuPC5L4ldQOC08MbTBufBm5LiqXybPdDlNaXXk + CI1CgpVQdW8AiyTTwShhYbeapj/oYG60Ltm07/r+218NHCpqkZeIWgnXo/qtQsP+FvpE + P013u9+H56rswLUaknqzqc/3zh+WV35XB/wDUXxG9D0ZfUjqHa79K7Woeca58asL9wEB + HjCQSf7QqqA/edOpW2rTBZLd6JdGiOsK8NMeHxzuytXlpEJ3CG+iMoNyAZWnrZri2ZGA + rBkQ== +X-Gm-Message-State: + ALoCoQloji/JJSW5ig0F91RqvKkFrAQ3UfEkom4TaoMyTBnQATr0opF7RDWZb4d4i+dAG1o49Ezz +X-Received: by 10.181.29.134 with SMTP id jw6mr3704938wid.69.1412680584516; + Tue, 07 Oct 2014 04:16:24 -0700 (PDT) +Received: from localhost ([2001:4b98:dc0:43:216:3eff:fe1b:25f3]) + by mx.google.com with ESMTPSA id + bi7sm14330278wib.17.2014.10.07.04.16.23 for + (version=TLSv1.1 cipher=RC4-SHA bits=128/128); + Tue, 07 Oct 2014 04:16:24 -0700 (PDT) +From: Jani Nikula +To: sshilovsky@gmail.com, notmuch@notmuchmail.org +Subject: Re: Backward scrolling notmuch_messages_t and notmuch_threads_t +In-Reply-To: + +References: + +User-Agent: Notmuch/0.18.1+69~gf92342c (http://notmuchmail.org) Emacs/23.2.1 + (x86_64-pc-linux-gnu) +Date: Tue, 07 Oct 2014 13:16:41 +0200 +Message-ID: <87lhos5duu.fsf@nikula.org> +MIME-Version: 1.0 +Content-Type: text/plain; charset=utf-8 +Content-Transfer-Encoding: quoted-printable +X-BeenThere: notmuch@notmuchmail.org +X-Mailman-Version: 2.1.13 +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: Tue, 07 Oct 2014 11:16:34 -0000 + +On Tue, 07 Oct 2014, Sergei Shilovsky wrote: +> Lets consider messages first. +> +> As far as I get there is no straightforward +> notmuch_messages_move_to_previous. One can usually implement such +> behaviour with caching previous messages which is slightly inefficient +> in memory consumption terms. +> +> But we can sort messages either date asc or date desc. +> +> Suppose, we're currently at the 1000th message in query "tag:whatever". +> +> So if we need to go to the previous message we could do something like +> +> notmuch search --sort=3Doldest-first tag:whatever and \ +> date:.. +> +> This query's result should start with our 1000th message following its +> previous message (in terms of the original request). So backward +> scrolling with no cache looks to be at least possible. +> +> Any idea of would that be fine? Is it possible to implement similar +> thing at low-level? + +See notmuch search --offset=3DN and --limit=3DN options. + +BR, +Jani. + + +> +> --=20 +> =D0=A1 =D1=83=D0=B2=D0=B0=D0=B6=D0=B5=D0=BD=D0=B8=D0=B5=D0=BC, +> =D0=A1=D0=B5=D1=80=D0=B3=D0=B5=D0=B9 =D0=A8=D0=B8=D0=BB=D0=BE=D0=B2=D1=81= +=D0=BA=D0=B8=D0=B9 +> Sergei Shilovsky +> _______________________________________________ +> notmuch mailing list +> notmuch@notmuchmail.org +> http://notmuchmail.org/mailman/listinfo/notmuch