From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#33255: 27.0.50; expand-file-name: default directory expanded twice if relative Date: Tue, 13 Nov 2018 22:12:59 +0200 Message-ID: <83d0r891o4.fsf@gnu.org> References: NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1542139936 3835 195.159.176.226 (13 Nov 2018 20:12:16 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 13 Nov 2018 20:12:16 +0000 (UTC) Cc: 33255@debbugs.gnu.org, immerrr@gmail.com To: Paul Eggert Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Nov 13 21:12:11 2018 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gMf2h-0000tj-1i for geb-bug-gnu-emacs@m.gmane.org; Tue, 13 Nov 2018 21:12:11 +0100 Original-Received: from localhost ([::1]:55953 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gMf4n-0006qQ-IM for geb-bug-gnu-emacs@m.gmane.org; Tue, 13 Nov 2018 15:14:21 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56737) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gMf4Y-0006nh-99 for bug-gnu-emacs@gnu.org; Tue, 13 Nov 2018 15:14:08 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gMf4U-00020G-AY for bug-gnu-emacs@gnu.org; Tue, 13 Nov 2018 15:14:06 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:46392) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gMf4U-000204-5y for bug-gnu-emacs@gnu.org; Tue, 13 Nov 2018 15:14:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1gMf4T-0000HJ-TR for bug-gnu-emacs@gnu.org; Tue, 13 Nov 2018 15:14:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 13 Nov 2018 20:14:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 33255 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 33255-submit@debbugs.gnu.org id=B33255.15421400001014 (code B ref 33255); Tue, 13 Nov 2018 20:14:01 +0000 Original-Received: (at 33255) by debbugs.gnu.org; 13 Nov 2018 20:13:20 +0000 Original-Received: from localhost ([127.0.0.1]:50650 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gMf3o-0000GI-AI for submit@debbugs.gnu.org; Tue, 13 Nov 2018 15:13:20 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:46854) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gMf3m-0000G6-Nv for 33255@debbugs.gnu.org; Tue, 13 Nov 2018 15:13:19 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gMf3c-0001Xg-Gs for 33255@debbugs.gnu.org; Tue, 13 Nov 2018 15:13:13 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:48021) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gMf3b-0001Wy-0R; Tue, 13 Nov 2018 15:13:07 -0500 Original-Received: from [176.228.60.248] (port=3913 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1gMf3a-0004Tz-5M; Tue, 13 Nov 2018 15:13:06 -0500 In-reply-to: (message from Paul Eggert on Tue, 13 Nov 2018 10:26:43 -0800) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:152356 Archived-At: > From: Paul Eggert > Date: Tue, 13 Nov 2018 10:26:43 -0800 > Cc: 33255-done@debbugs.gnu.org, immerrr again , > Noam Postavsky > > > I think a non-absolute HOME is a user error. > > Eg cd $HOME may then not be idempotent. > That's true. However, POSIX says that sh treats ~/foo like $HOME/foo > even when HOME is not absolute, and it's better if Emacs is consistent > with POSIX as much as possible within the Emacs constraint that > expand-file-name must expand to an absolute file name. So I implemented > something along the line of Noam's suggestion by installing the attached > patch into master; this should fix the bug originally reported. > > Unlike Noam's suggestion, this patch causes Emacs to look at the current > value of HOME, not the value HOME had when Emacs started up, as that > corresponds more closely to POSIX sh. Thanks. I think this needs to be called out in NEWS as an incompatible change, and probably also documented in the manuals.