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.devel Subject: Re: Question about start-process and argument list Date: Fri, 03 Feb 2023 13:23:00 -0800 Message-ID: <878rhel9zf.fsf@ericabrahamsen.net> References: <87r0v7wgrp.fsf@ericabrahamsen.net> <63dd5f91.050a0220.1f3dc.df39@mx.google.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="11812"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Jean Louis , emacs-devel@gnu.org To: Bruno Barbier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Feb 03 22:24:01 2023 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 1pO3XM-0002uA-Sn for ged-emacs-devel@m.gmane-mx.org; Fri, 03 Feb 2023 22:24:00 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pO3Wc-000673-7x; Fri, 03 Feb 2023 16:23:14 -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 1pO3Wb-00065B-B3 for emacs-devel@gnu.org; Fri, 03 Feb 2023 16:23:13 -0500 Original-Received: from mail.ericabrahamsen.net ([52.70.2.18]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pO3WZ-0007xc-KR for emacs-devel@gnu.org; Fri, 03 Feb 2023 16:23:12 -0500 Original-Received: from localhost (unknown [76.135.104.211]) (Authenticated sender: eric@ericabrahamsen.net) by mail.ericabrahamsen.net (Postfix) with ESMTPSA id 666E0FA089; Fri, 3 Feb 2023 21:23:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ericabrahamsen.net; s=mail; t=1675459383; bh=xPy/9seMo4zContuHThtBu0vC0HM6C5SNzYFSuLwEek=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=u/Pf3F9q97L6rAkcqsX2IdTUoWefIlB23Kp/jZrsQHOdOPe9DfDLDi0DmpjOa0Lj1 qzDcGxvG/DqJc5NjN1+6ViJRjBXTCSyYHNqgkmUEVjOeSw+IXwqJaZQBRVaJ0s2TiO 8OnGYozE8JGYTw2UW0TKUrwHXwfkAcKSYk5XlnBM= In-Reply-To: <63dd5f91.050a0220.1f3dc.df39@mx.google.com> (Bruno Barbier's message of "Fri, 03 Feb 2023 20:24:52 +0100") Received-SPF: pass client-ip=52.70.2.18; envelope-from=eric@ericabrahamsen.net; helo=mail.ericabrahamsen.net X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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, 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-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:302934 Archived-At: Bruno Barbier writes: > Jean Louis writes: Thanks to both of you for the responses. >> * Eric Abrahamsen [2023-02-03 09:37]: >>> >>> 1. What does the program actually see, in this case? Is the first >>> example above, is it the equivalent of (on the command line) wrapping >>> the query in double quotes? >> >> It has same effect. > > Maybe I didn't understand the question, but I don't think it has the > same effect nor that it should. [...] Right, and experience demonstrates that it doesn't have the same effect, because one version works (with mairix) and the other doesn't. >>> 2. Should I be using `start-process-shell-command' instead? The docs >>> mention that the main difference is that it will use shell features, >>> which aren't really relevant here, but maybe it's the right thing to >>> do, semantically. >> >> Rather no, as that becomes unsafe. Yes, it would invoke shell and >> some environment and the program line. But for programing purposes is >> unsafe. > > Right, I would advise you, like Jean, to stay with `start-process'. Thanks, I will do that. > And, the search query should probably be only one argument (except if > you accept to restrict you query syntax to something that's compatible > with any possible way to quote and parse arguments on a command line on > any possible OS, including sign like '-', '"', ')', etc.). Well, as noted above, it doesn't work when it's all one argument. At least with one of the possible commands -- I can "fix it" for mairix in particular, my main question is if I should be "fixing it" for all search commands. Not to be contrarian, but this: > compatible with any possible way to quote and parse arguments on a > command line on any possible OS Kind of sounds like I should be using `start-process-shell-command' again! As I understand it, this is its main selling point.