From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eric Abrahamsen Newsgroups: gmane.emacs.help Subject: Re: Gnus: caching message headers? Date: Mon, 07 Sep 2020 09:26:32 -0700 Message-ID: <874ko9sgcn.fsf@ericabrahamsen.net> References: Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="30422"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:eU1k2RNPvpQ1CGvj8dL5rZoMMho= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Sep 07 18:27:12 2020 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kFJz5-0007o4-BM for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 07 Sep 2020 18:27:11 +0200 Original-Received: from localhost ([::1]:34346 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kFJz4-0002Jd-DA for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 07 Sep 2020 12:27:10 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:46310) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kFJym-0002JJ-Jw for help-gnu-emacs@gnu.org; Mon, 07 Sep 2020 12:26:52 -0400 Original-Received: from static.214.254.202.116.clients.your-server.de ([116.202.254.214]:60510 helo=ciao.gmane.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kFJyl-0006tS-2N for help-gnu-emacs@gnu.org; Mon, 07 Sep 2020 12:26:52 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1kFJyg-0007Li-95 for help-gnu-emacs@gnu.org; Mon, 07 Sep 2020 18:26:46 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/07 11:25:51 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:123982 Archived-At: Gregory Heytings via Users list for the GNU Emacs text editor writes: > Hi list, > > I'm trying to configure Gnus to access my email through IMAP. > > I'm too accustomed to traditional MUAs to switch to the "Gnus way" in > one step, so I have: > > (setq gnus-permanently-visible-groups ".*") > (setq gnus-parameters > '((".*" > (gnus-show-threads nil) > (gnus-use-scoring nil) > (gnus-article-sort-functions '(gnus-article-sort-by-number)) > (display . all)))) > > I would like to have, in the *Summary*, a complete list of the emails > contained in a folder when I hit RET on its label. Each time I do > this however, Gnus asks me how many articles I want to retrieve, and > issues a "UID FETCH 1:N (UID RFC822.SIZE BODYSTRUCTURE > BODY.PEEK[HEADER.FIELDS (...)])" IMAP command, which can take quite > some time to complete when N is large. > > Is there a way to convince Gnus to cache the result of that command > (without caching all emails), and to issue a command only for the new > UIDs? Caching the result of that command should not eat too much disk > space. No, not at the moment. You can avoid the prompt by customizing the value of `gnus-large-newsgroup', but it's still going to retrieve all the headers for the group. There's currently no way around this, as Gnus only lets you have one active Summary buffer at a time, which means all the old data is dumped every time you switch groups. In the back of my head I have some ideas for removing this restriction, but it will take a long time to get there. Eric