From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Noam Postavsky Newsgroups: gmane.emacs.bugs Subject: bug#29094: dired-do-compress creates empty archives Date: Mon, 04 Dec 2017 20:46:07 -0500 Message-ID: <87bmjegd5s.fsf@users.sourceforge.net> References: <20171031233359.GA44370@magi.net.ru> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1512438434 25519 195.159.176.226 (5 Dec 2017 01:47:14 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 5 Dec 2017 01:47:14 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.90 (gnu/linux) Cc: 29094@debbugs.gnu.org To: Max Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Dec 05 02:47:06 2017 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 1eM2KA-0006E5-9O for geb-bug-gnu-emacs@m.gmane.org; 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Mon, 04 Dec 2017 17:46:08 -0800 (PST) Original-Received: from zebian ([45.2.119.34]) by smtp.googlemail.com with ESMTPSA id j21sm6867042ioe.25.2017.12.04.17.46.07 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 04 Dec 2017 17:46:08 -0800 (PST) In-Reply-To: <20171031233359.GA44370@magi.net.ru> (Max's message of "Wed, 1 Nov 2017 02:33:59 +0300") 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:140709 Archived-At: tags 29094 + patch quit Max writes: > When Z is pressed on a directory, dired (according to > dired-compress-file-suffixes variable) runs the following command: > > tar -c directory | gzip -c9 > directory.tar.gz > > On my system running this command results in an error: > > tar: Failed open to write on /dev/rst0: Permission denied > > as tar(1) defaults -f to /dev/rst0. > > Argument '-f-' should be used to write to stdout. Right, the GNU tar manual says [1] By default, tar uses an archive file name that was compiled when it was built on the system; usually this name refers to some physical tape drive on the machine. However, the person who installed tar on the system may not have set the default to a meaningful value as far as most users are concerned. So it's actually a bit surprising that the current values apparently work for most people. I guess most GNU/Linux distros set the default to stdin? As far as I can tell, dropping the 'f' option was just an oversight (see [2] and other messages in that thread). > Also '-v' is probably not needed here, since the output is not used > anywhere. Makes sense. > Here is a patch to correct this behaviour: I think it's good for emacs-26. I assume you haven't assigned copyright to Emacs (so it should be marked as a tiny change)? [1]: https://www.gnu.org/software/tar/manual/html_node/file.html [2]: https://lists.gnu.org/archive/html/emacs-devel/2015-10/msg01282.html