From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.devel Subject: Re: Finding the dump Date: Sun, 27 Jan 2019 17:21:30 -0800 Organization: UCLA Computer Science Department Message-ID: <725a9f97-8bb5-4592-2512-dbd422023f51@cs.ucla.edu> References: <83munr8jb1.fsf@gnu.org> <838szb8ey9.fsf@gnu.org> <83d0oj62bc.fsf@gnu.org> <87ef8z4g1m.fsf@igel.home> <838sz75u7p.fsf@gnu.org> <877eer4e4x.fsf@igel.home> <835zub5p3i.fsf@gnu.org> <8736pf408v.fsf@igel.home> <83womq3z5c.fsf@gnu.org> <871s4yxfvb.fsf@igel.home> <83o9823xcq.fsf@gnu.org> <87womqvyy4.fsf@igel.home> <4f30b2b598e71d2c6ad766a3da8e4a33.squirrel@dancol.org> <87o982vszn.fsf@igel.home> <87k1ipx3jq.fsf@igel.home> <87bm41wzmv.fsf@igel.home> <608533e75f41da3e36e191f8a670af05.squirrel@dancol.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="47829"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 Cc: Eli Zaretskii , Andreas Schwab , rpluim@gmail.com, emacs-devel@gnu.org To: Daniel Colascione Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Jan 28 02:21:59 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 (TLS1.0:RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1gnvcc-000CJd-WB for ged-emacs-devel@m.gmane.org; Mon, 28 Jan 2019 02:21:59 +0100 Original-Received: from localhost ([127.0.0.1]:52415 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gnvcb-0006Jl-VM for ged-emacs-devel@m.gmane.org; Sun, 27 Jan 2019 20:21:57 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:38598) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gnvcQ-0006GS-3Q for emacs-devel@gnu.org; Sun, 27 Jan 2019 20:21:46 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gnvcP-0004Nh-86 for emacs-devel@gnu.org; Sun, 27 Jan 2019 20:21:46 -0500 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:55762) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gnvcK-0004Jp-Rk; Sun, 27 Jan 2019 20:21:44 -0500 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 27B47160FF2; Sun, 27 Jan 2019 17:21:32 -0800 (PST) Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id kiJRIjdcU3Hu; Sun, 27 Jan 2019 17:21:31 -0800 (PST) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 6C13F1611B8; Sun, 27 Jan 2019 17:21:31 -0800 (PST) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id yUeiiCU9L8oM; Sun, 27 Jan 2019 17:21:31 -0800 (PST) Original-Received: from [192.168.1.9] (cpe-23-242-74-103.socal.res.rr.com [23.242.74.103]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 35A35160FF2; Sun, 27 Jan 2019 17:21:31 -0800 (PST) In-Reply-To: <608533e75f41da3e36e191f8a670af05.squirrel@dancol.org> Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 131.179.128.68 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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:232746 Archived-At: Daniel Colascione wrote: > we_already_ do the moral equivalent of realpath(argv[0]), in > init_cmdargs, which sets invocation-directory and from there various > internal paths, including installation-directory. Emacs can run without any of that stuff, so people can run Emacs 26 with argv[0] being any string they like. That will stop working if Emacs can't run when argv[0] is "wrong". The GNU Coding Standards have long said that a program's behavior shouldn't depend its name (i.e., on the contents of argv[0]), and there are advantages to sticking to standard practices even if some programs depart from them.