From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: master daea9b3 1/2: Read mailcaps again only when necessary Date: Mon, 01 Nov 2021 14:06:07 -0400 Message-ID: References: <20211101135344.25800.81476@vcs0.savannah.gnu.org> <20211101135346.2EBEB20B72@vcs0.savannah.gnu.org> <87tugvrerf.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="39059"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: emacs-devel@gnu.org, Gregory Heytings To: Lars Ingebrigtsen Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Nov 01 20:33:43 2021 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 1mhd3u-0009tX-8g for ged-emacs-devel@m.gmane-mx.org; Mon, 01 Nov 2021 20:33:42 +0100 Original-Received: from localhost ([::1]:46184 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mhd3r-0000BP-Sg for ged-emacs-devel@m.gmane-mx.org; Mon, 01 Nov 2021 15:33:39 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39946) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mhbhL-0000ka-BQ for emacs-devel@gnu.org; Mon, 01 Nov 2021 14:06:20 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:25077) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mhbhH-0002Zg-D3 for emacs-devel@gnu.org; Mon, 01 Nov 2021 14:06:18 -0400 Original-Received: from pmg2.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 71DA180512; Mon, 1 Nov 2021 14:06:13 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id C6243800C0; Mon, 1 Nov 2021 14:06:11 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1635789971; bh=Jy0xCzHTK6Iyf3DD6xcEKWKdUhz2/SNsPCNwLH6niZg=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=ltRiznHmwZ66A/yBH8cGAjgAZ3RP5XVw6pzs57rCIs1yU4DZhZt2obO3MRgoSmOg9 lWtJFNei3T3KasKKSs51E9ccGN8gV/RjekumYiH7Lh+/17ibAf36fH8go9KPTlt2T7 SqXoTy2GIovs66JIzCx0vgY5ehR/8Lgllqrrqcuut+yVA/8FDny9OLPsyS8pZtwzCN 0LEEItWg0i4EJ+EEP6dLKiFw6M9WEiBLVGn8gS7IF2UdPhH2C1Esd/cHa5kVyDZhoH mw+Px36XhtYgUhjnyzU5nlaqcQ5iqnrsxYxG1diXCcNCW3J5CSJcsjrf+JaMLKwzPN T7Gpx3fhwjk6g== Original-Received: from alfajor (lechon.iro.umontreal.ca [132.204.27.242]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id B783C120519; Mon, 1 Nov 2021 14:06:11 -0400 (EDT) In-Reply-To: <87tugvrerf.fsf@gnus.org> (Lars Ingebrigtsen's message of "Mon, 01 Nov 2021 18:01:56 +0100") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=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" Xref: news.gmane.io gmane.emacs.devel:278418 Archived-At: Lars Ingebrigtsen [2021-11-01 18:01:56] wrote: > Stefan Monnier writes: >> If two packages read&parse the same file and both rely on this function >> to decide when to reparse, the second package can get a nil value >> (because the first has caused the mtime to be reset in the hash table) >> even though the file has changed since it last parsed it. > I think that's up to the higher level to decide whether it's a problem > or not, like with other memoizing functions. What higher level? I'm talking about two separate packages that don't know each other, so there's no higher level magic that will save us. Stefan