From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Gregory Heytings Newsgroups: gmane.emacs.devel Subject: Re: [PATCH v3] Allow applying filters to summary consecutively Date: Fri, 11 Nov 2022 18:00:06 +0000 Message-ID: <9aa7db1076472a25a239@heytings.org> References: <874jvaont2.fsf@autistici.org> <83r0ybs07r.fsf@gnu.org> <83r0y9q5j1.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="19506"; mail-complaints-to="usenet@ciao.gmane.io" Cc: rms@gnu.org, andrea.monaco@autistici.org, rpluim@gmail.com, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Nov 11 19:01:27 2022 Return-path: Envelope-to: ged-emacs-devel@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 1otYLH-0004uQ-GV for ged-emacs-devel@m.gmane-mx.org; Fri, 11 Nov 2022 19:01:27 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1otYKX-0001Gt-9O; Fri, 11 Nov 2022 13:00:41 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1otYK5-0001FF-Sa for emacs-devel@gnu.org; Fri, 11 Nov 2022 13:00:22 -0500 Original-Received: from heytings.org ([95.142.160.155]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1otYK3-0007tt-K2; Fri, 11 Nov 2022 13:00:13 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heytings.org; s=20220101; t=1668189607; bh=poefBU/OspB7liuPFOlh94QCRH+ic/Q0sXfgwAwVRII=; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:From; b=aWh/z7D0+bTlqYHEfyBSfKsCdbr2UifIT9+JG9KEITcQ1xDg0Lg/sxpbjuH9gLZa5 cfhyNeeulf596C4IOvl+TkRQygjhYG4DU8GF16wzmnLV8VsEbCKzoSRIjwnSP+HibB EBBpaUWBDuOasXsOP9y/XtiOMgl+blFlVnjCmDo8zjcEVOfepTMMQJUnh8/5xphjM0 /FIzoeKzU+PJbrM51ZiH/xUoae63/mwOv/sDTTfKtV3mqvz+/cBcuV4Ck0D+L4SBiJ 3inVFAchkPpLyPnYVlPafTd4WYRxwSoMRKeuCLbJdx8mZXYZURwkRROjg9k0KpC8ON cRGyAW50bF4CQ== In-Reply-To: <83r0y9q5j1.fsf@gnu.org> Received-SPF: pass client-ip=95.142.160.155; envelope-from=gregory@heytings.org; helo=heytings.org X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:299579 Archived-At: >> Well, how about "Using a summary filtering command when a filtered >> summary already exists"? >> >> It may not be the best possible wordin, but at least it's correct and >> unambiguous. > > That's okay, thanks. But it's only the beginning of my problem. How do > you describe the effect of applying a filter on top of one or more other > filters? Andrea wants to use "intersection", but I tend to think this > is too "mathematical" and too vague to explain clearly what happens. > What would be a good terminology for that? > I think there are two possibilities when adding another filter: either broadening the already existing filtering ("union" in mathematical terms) or narrowing the already existing filtering ("intersection" in mathematical terms).