From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Image-conversion shims Date: Wed, 09 Oct 2019 15:53:04 -0400 Message-ID: References: <87v9tctcca.fsf@gnus.org> <87impct2xf.fsf@gnus.org> <83zhinfufb.fsf@gnu.org> <87ftkfnx7a.fsf@gnus.org> <83eezzfh8c.fsf@gnu.org> <8736gea0do.fsf@gnus.org> <87muedrg7d.fsf@mail.linkov.net> <878spxe3hb.fsf@gnus.org> <87k19gwfwb.fsf@mail.linkov.net> <87h84j1asf.fsf@gnus.org> <87r23l67qr.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="65807"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) Cc: Eli Zaretskii , emacs-devel@gnu.org, Juri Linkov To: Lars Ingebrigtsen Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Oct 09 22:34:35 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iIIfK-000H0E-Ha for ged-emacs-devel@m.gmane.org; Wed, 09 Oct 2019 22:34:34 +0200 Original-Received: from localhost ([::1]:57248 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iIIfJ-00021W-0D for ged-emacs-devel@m.gmane.org; Wed, 09 Oct 2019 16:34:33 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:58252) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iII1G-0004Fc-Iq for emacs-devel@gnu.org; Wed, 09 Oct 2019 15:53:11 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iII1F-0005ZB-4c for emacs-devel@gnu.org; Wed, 09 Oct 2019 15:53:10 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:21798) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iII1D-0005Yb-Ik; Wed, 09 Oct 2019 15:53:07 -0400 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id B8D79448CF7; Wed, 9 Oct 2019 15:53:06 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 965E0448A73; Wed, 9 Oct 2019 15:53:05 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1570650785; bh=wAGUcx/qZyrxzbF7jULYeXRbG1aPtFnBTFOWb4ZrJJo=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=N91WX60OJdY0znCWdWfKndlKD7EwU0uCQMkyex3zIByiq41BnIorKH2a6EPtWG3Ur grXBrhVQDO90BJiHWLS8t0oFczfOC7FtnMWi35pRXfQ7PkxMRXsq6yVXcxjiFR6rDj jB/8ovevlVUEBzE3bmCwxQGVv+lJfX8peQtMHaYbd1NeyFA39Ao8TOiIYuZ6wHbvn6 qAMAAVk5Uq2OoST3rVRkGVqeL9CscBPi7m8bbdPJS0+Z25Dth6x+XYu7lopeSnont9 GYj9xNUiEpTW7KNaHIxdCLVT6r+qTsVw1NFRH88WAqVSe5DkoOk/EHeZLXUU1jmE81 gbZrUciyTai4w== Original-Received: from lechazo (lechon.iro.umontreal.ca [132.204.27.242]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 8816B120554; Wed, 9 Oct 2019 15:53:05 -0400 (EDT) In-Reply-To: <87r23l67qr.fsf@gnus.org> (Lars Ingebrigtsen's message of "Wed, 09 Oct 2019 21:26:04 +0200") X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 132.204.25.50 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:240790 Archived-At: >> I still can't see why we should care about our ability to display an >> image before preferring image-mode over fundamental-mode. > It just feels odd to be mapping file extensions to a mode when we don't > know whether that mode can display the file meaningfully or not. If the result is no worse than what we have in fundamental-mode, I think it's good. It's likely going to be better: image-mode could emit a helpful message explaining which variable to set to enable the use of external converters or which external converters to install to be able to display the image, for example. > We don't do that with other file types, so why with images? We use `perl-mode` even if there's no `perl` installed ;-) >> - extensions which are always images and can't meaningfully be edited >> within Emacs, so only image-mode makes sense. > > In that case we should change image-mode to not display stuff like this > for formats it doesn't understand: > > Type C-c C-c or C-c C-x to view the image as an image or hex. > Cannot display image: (Cannot determine image type) Yes, we could improve that. But it's still no worse than the silent treatment of fundamental-mode. Stefan