From unknown Fri Jun 20 07:28:33 2025 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) Content-Type: text/plain; charset=utf-8 From: bug#69901 <69901@debbugs.gnu.org> To: bug#69901 <69901@debbugs.gnu.org> Subject: Status: (echo a; echo b) | sort -nu looses some data Reply-To: bug#69901 <69901@debbugs.gnu.org> Date: Fri, 20 Jun 2025 14:28:33 +0000 retitle 69901 (echo a; echo b) | sort -nu looses some data reassign 69901 coreutils submitter 69901 Rafal Maszkowski severity 69901 normal thanks From debbugs-submit-bounces@debbugs.gnu.org Tue Mar 19 14:25:18 2024 Received: (at submit) by debbugs.gnu.org; 19 Mar 2024 18:25:18 +0000 Received: from localhost ([127.0.0.1]:54440 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1rme9F-00089q-3S for submit@debbugs.gnu.org; Tue, 19 Mar 2024 14:25:18 -0400 Received: from lists.gnu.org ([209.51.188.17]:59354) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1rmbTa-0001yA-8V for submit@debbugs.gnu.org; Tue, 19 Mar 2024 11:34:06 -0400 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 1rmbSw-0001XG-U5 for bug-coreutils@gnu.org; Tue, 19 Mar 2024 11:33:26 -0400 Received: from mx1.icm.edu.pl ([213.135.59.49]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rmbSu-0003C1-KX for bug-coreutils@gnu.org; Tue, 19 Mar 2024 11:33:26 -0400 X-Virus-Scanned: Debian amavisd-new at icm.edu.pl DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=icm.edu.pl; s=default; t=1710862393; bh=BvF+IiZTZSrkTKCD8nGzLZY0cdlR5QEM5fHRzssaddE=; h=Date:From:To:Subject:From; b=tVrJqaUTs909dIVYnUd0o5iM/I5tmRzb8AlAB1ylXhMIW0v9j43mx352m1RC4I3UB GWUpdouA2FLAEsnD/hfR0CE+MQLeHdFewfOXDqn8qj/PH6W5i8FhbH98v5Ihm5/JAY XSXFg3/HdUXw7TPZzTT+TxlXsfVjnANoWx5MFSzaLX5R3f5jsE019h0NuZy8doee3b oEZxJRB6f9ZiADohUyYdKsjzyJKYxGxh/y6zasGWuHs3jayJ9fc/SIFmwyBvDedcSU abrQxWOTj0BW/NhIUELNQTOBqES/6LJ/ULhwtqyQRv1WEj7zKKpdoQYNm+5aYv2Fxh JwZhZeiIguJQA== Received: from smtp.icm.edu.pl (mail.icm.edu.pl [213.135.59.43]) by mx1.icm.edu.pl (Postfix) with ESMTP for ; Tue, 19 Mar 2024 16:33:11 +0100 (CET) Received: from ukwial.icm.edu.pl (unknown [192.168.1.73]) by smtp.icm.edu.pl (Postfix) with ESMTPSA id 4A1061FC50 for ; Tue, 19 Mar 2024 16:33:11 +0100 (CET) Date: Tue, 19 Mar 2024 16:33:09 +0100 From: Rafal Maszkowski To: bug-coreutils@gnu.org Subject: (echo a; echo b) | sort -nu looses some data Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=213.135.59.49; envelope-from=rzm@icm.edu.pl; helo=mx1.icm.edu.pl 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, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.4 (-) X-Debbugs-Envelope-To: submit X-Mailman-Approved-At: Tue, 19 Mar 2024 14:21:53 -0400 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.4 (--) Sort with -n and -u options works correctly for numbers: (echo 10; echo 11) | sort -nu 10 11 but looses data when used with non-numbers: (echo a; echo b) | sort -nu a (echo 1.0; echo 1.1) | sort -nu 1.0 I have tested this on versions 8.32 and 9.2 default for Debian 11 and 12, and additionally compiled version 9.4. The --debug option advised in README does not say anything helpful: (echo a; echo b) | sort --debug -nu sort: text ordering performed using simple byte comparison a ^ no match for key R. -- „Walczy on z całym zapamiętaniem przeciwko intelektowi” - z akt personalnych prof. A. Baeumlera From debbugs-submit-bounces@debbugs.gnu.org Tue Mar 19 18:07:51 2024 Received: (at 69901-done) by debbugs.gnu.org; 19 Mar 2024 22:07:51 +0000 Received: from localhost ([127.0.0.1]:36911 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1rmhcd-0003ly-2J for submit@debbugs.gnu.org; Tue, 19 Mar 2024 18:07:51 -0400 Received: from mail.cs.ucla.edu ([131.179.128.66]:58878) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1rmhca-0003lW-EW for 69901-done@debbugs.gnu.org; Tue, 19 Mar 2024 18:07:49 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.cs.ucla.edu (Postfix) with ESMTP id 4CB633C011BDA; Tue, 19 Mar 2024 15:07:03 -0700 (PDT) Received: from mail.cs.ucla.edu ([127.0.0.1]) by localhost (mail.cs.ucla.edu [127.0.0.1]) (amavis, port 10032) with ESMTP id iASEzQSp0YWk; Tue, 19 Mar 2024 15:07:02 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by mail.cs.ucla.edu (Postfix) with ESMTP id BD8373C011BDB; Tue, 19 Mar 2024 15:07:02 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.10.3 mail.cs.ucla.edu BD8373C011BDB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cs.ucla.edu; s=9D0B346E-2AEB-11ED-9476-E14B719DCE6C; t=1710886022; bh=jmVnB8kbNDI330xt5w6iQvn2Gss6L4LYRVN2Cp0N85c=; h=Message-ID:Date:MIME-Version:To:From; b=qD8hqDxOiC6V7gXsoLqBlhZ/d6qo/Ur43n5D9yGKUVCB2CKOkRrC0vXwiv+HK9GWB aahl0pj+eV/B0OYAN+Mw/VsnbgtvNVdJJVaMzZ0UkesFJ8TJw1Uy7MPC53aD3PTikx 0xFGgKCPPrAoaqz4GNRa99AXk70eI0+7D1DdkmrfG4XGYY9hmCriWxlv3eXL+kJO1n MjTS/rfFhrsb7UpHXVfYxPjria0dPuXMfk08F0Pp/fwS28cxnsTB1n8HIHzzwJ1k9Y dIfeg+7CBSiJkuUsTaXXoCUO9ccOeLSpiIhB+re5NzpByXfhefBwC4hCIOGoY40k63 wEsZmZVIgJKiw== X-Virus-Scanned: amavis at mail.cs.ucla.edu Received: from mail.cs.ucla.edu ([127.0.0.1]) by localhost (mail.cs.ucla.edu [127.0.0.1]) (amavis, port 10026) with ESMTP id ysBf43r00c-Q; Tue, 19 Mar 2024 15:07:02 -0700 (PDT) Received: from [131.179.64.200] (Penguin.CS.UCLA.EDU [131.179.64.200]) by mail.cs.ucla.edu (Postfix) with ESMTPSA id A5C263C011BDA; Tue, 19 Mar 2024 15:07:02 -0700 (PDT) Message-ID: <4bec3b35-29ee-4397-a64a-0ddf44d215aa@cs.ucla.edu> Date: Tue, 19 Mar 2024 15:07:01 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: bug#69901: (echo a; echo b) | sort -nu looses some data Content-Language: en-US To: Rafal Maszkowski References: From: Paul Eggert Organization: UCLA Computer Science Department In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 69901-done Cc: 69901-done@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -1.0 (-) On 3/19/24 08:33, Rafal Maszkowski wrote: > he --debug option advised in > README does not say anything helpful: > > (echo a; echo b) | sort --debug -nu > sort: text ordering performed using simple byte comparison > a > ^ no match for key That diagnostic message is helpful. It's telling you that there's no number, so everything sorts as being the same, which means 'sort -nu' (correctly) outputs just one line. 'sort' has behaved this way for quite some time, and POSIX requires this behavior. From unknown Fri Jun 20 07:28:33 2025 Received: (at fakecontrol) by fakecontrolmessage; To: internal_control@debbugs.gnu.org From: Debbugs Internal Request Subject: Internal Control Message-Id: bug archived. Date: Wed, 17 Apr 2024 11:24:11 +0000 User-Agent: Fakemail v42.6.9 # This is a fake control message. # # The action: # bug archived. thanks # This fakemail brought to you by your local debbugs # administrator