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#19350: #19350 24.4; Incorrect quoting of %-signs for Windows command shell Date: Mon, 15 Aug 2016 18:01:15 +0300 Message-ID: <83twemf550.fsf@gnu.org> References: <87k2fmyg16.fsf@users.sourceforge.net> <87shu6vi54.fsf@users.sourceforge.net> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1471273343 12322 195.159.176.226 (15 Aug 2016 15:02:23 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 15 Aug 2016 15:02:23 +0000 (UTC) Cc: 19350@debbugs.gnu.org, demiobenour@gmail.com To: npostavs@users.sourceforge.net Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Aug 15 17:02:19 2016 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 1bZJP8-0002ze-LW for geb-bug-gnu-emacs@m.gmane.org; Mon, 15 Aug 2016 17:02:18 +0200 Original-Received: from localhost ([::1]:37462 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bZJP5-000125-QK for geb-bug-gnu-emacs@m.gmane.org; Mon, 15 Aug 2016 11:02:15 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:42559) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bZJOx-00010i-QT for bug-gnu-emacs@gnu.org; Mon, 15 Aug 2016 11:02:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bZJOr-0007Ov-S4 for bug-gnu-emacs@gnu.org; Mon, 15 Aug 2016 11:02:06 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:60718) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bZJOr-0007Or-PM for bug-gnu-emacs@gnu.org; Mon, 15 Aug 2016 11:02:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1bZJOr-0006W2-IY for bug-gnu-emacs@gnu.org; Mon, 15 Aug 2016 11:02:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 15 Aug 2016 15:02:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 19350 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: wontfix confirmed Original-Received: via spool by 19350-submit@debbugs.gnu.org id=B19350.147127329425011 (code B ref 19350); Mon, 15 Aug 2016 15:02:01 +0000 Original-Received: (at 19350) by debbugs.gnu.org; 15 Aug 2016 15:01:34 +0000 Original-Received: from localhost ([127.0.0.1]:58430 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bZJOP-0006VL-RG for submit@debbugs.gnu.org; Mon, 15 Aug 2016 11:01:34 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:51491) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bZJOO-0006VA-Ph for 19350@debbugs.gnu.org; Mon, 15 Aug 2016 11:01:33 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bZJOE-0007GD-Ia for 19350@debbugs.gnu.org; Mon, 15 Aug 2016 11:01:27 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:36250) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bZJOE-0007G6-Eh; Mon, 15 Aug 2016 11:01:22 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:1877 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1bZJOC-0003Vr-5x; Mon, 15 Aug 2016 11:01:21 -0400 In-reply-to: <87shu6vi54.fsf@users.sourceforge.net> (npostavs@users.sourceforge.net) 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:122240 Archived-At: > From: npostavs@users.sourceforge.net > Date: Sun, 14 Aug 2016 23:13:43 -0400 > Cc: 19350@debbugs.gnu.org > > Hmm, maybe we could fix this by making Emacs refuse to apply environment > variables with names ending in carets? I'm very much against disallowing perfectly valid (if rare) use cases just because someone malicious can take advantage of that. >From my POV, as long as Emacs itself doesn't produce such shell commands and/or environment variables for any of its features, avoiding this becomes user's responsibility, just like when working at the shell prompt. Of course, if we can find a reliable solution to the problem that doesn't take away features, that'd be better, but failing that, I'm okay with leaving this alone, perhaps documenting somewhere that using % in shell commands when there are environment variables ending in ^ could produce surprising results. Thanks.