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: [PATCH] nextstep: Emacs can be used to edit PDF files Date: Sat, 20 Nov 2021 08:06:20 -0500 Message-ID: References: <20211110083818.57631-1-dme@dme.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="34645"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: Daniel =?windows-1252?Q?Mart=EDn?= , David Edmondson , emacs-devel@gnu.org To: Stefan Kangas Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Nov 20 14:07:13 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 1moQ5J-0008qE-5J for ged-emacs-devel@m.gmane-mx.org; Sat, 20 Nov 2021 14:07:13 +0100 Original-Received: from localhost ([::1]:49756 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1moQ5H-0002PD-79 for ged-emacs-devel@m.gmane-mx.org; Sat, 20 Nov 2021 08:07:11 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:39520) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1moQ4h-0001jO-Jc for emacs-devel@gnu.org; Sat, 20 Nov 2021 08:06:35 -0500 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:8025) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1moQ4e-0005sA-CG for emacs-devel@gnu.org; Sat, 20 Nov 2021 08:06:34 -0500 Original-Received: from pmg2.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 54A6A80582; Sat, 20 Nov 2021 08:06:29 -0500 (EST) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id 75DC180413; Sat, 20 Nov 2021 08:06:27 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1637413587; bh=XJbxjV9OuDXsy9gECR559iCA2Pc894M2h3gfiBsPbGw=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=PA64Lib4h8CPHkLtApZxg/Avp6FmYE2TLWxqsbV0Y5LXXpdFApbMK1xQKlK0k0IeQ 5/Z/PcO+CxXwo3tbo//tZoi8eGPwjQDwrmwFpN8d09S0N65KvjPlhsLmmRXFsmvpPu /aSHMdwNCwDNKrS7Owb/8Pof1ajfM2fUuVBIy87ArLhidb86Vv6ksKjH80JOnwnbJg ZdW6k3R0K4l42aHz5GogiYaHg82woAaDSihIcnuG5oXw6t7TzzBReovpP3PeHpCAwo KqO4vXXhn4zG1bfiJcbNI/yFmQnfnQH4xrN1kcp02ko8KFinF0G8EcrMpNzG8SmwjX JOF64brwdgupw== Original-Received: from pastel (unknown [216.154.30.173]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 3D436120227; Sat, 20 Nov 2021 08:06:27 -0500 (EST) In-Reply-To: (Stefan Kangas's message of "Sat, 20 Nov 2021 04:55:17 +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:279802 Archived-At: Stefan Kangas [2021-11-20 04:55:17] wrote: > Stefan Monnier writes: > >> Any chance we could change doc-view so it works without `gs` (nor >> `mupdf`) using one of the tools pre-installed in macOS? > > It seems like we could, from searching the web there's apparently a tool > called "sips" that is pre-installed on macOS. I just checked my machine > and I have it there. > > AFAICT, you can't convert only one page with it, only the full page. > But it seems to be a hard requirement of a > `doc-view-pdf->png-converter-function' that we can specify a page number > to it, so I'm not sure how tricky it is to fit into what we have now. > > Maybe someone more familiar with doc-view could take a look. Apparently it might also be possible to do it via AppleScript (according to http://preserve.mactech.com/articles/mactech/Vol.21/21.03/BasicImageManipulation/index.html) But both of those seem to focus on image manipulation and completely skip describing the case of a PDF (or GIF, ...) that contains several images/pages. So yes, it might be doable but someone will have to play with it to see exactly what can be done. If it can only convert a whole document at a time, I think doc-view could be adapted to accommodate that requirement. Stefan