X-Loop: help-debbugs@HIDDEN Subject: bug#26052: Feature suggestion: Identifying identical files Resent-From: Victor Porton <porton@HIDDEN> Original-Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> Resent-CC: bug-diffutils@HIDDEN Resent-Date: Fri, 10 Mar 2017 18:05:02 +0000 Resent-Message-ID: <handler.26052.B.148916904928026 <at> debbugs.gnu.org> Resent-Sender: help-debbugs@HIDDEN X-GNU-PR-Message: report 26052 X-GNU-PR-Package: diffutils X-GNU-PR-Keywords: To: 26052 <at> debbugs.gnu.org X-Debbugs-Original-To: bug-diffutils@HIDDEN Received: via spool by submit <at> debbugs.gnu.org id=B.148916904928026 (code B ref -1); Fri, 10 Mar 2017 18:05:02 +0000 Received: (at submit) by debbugs.gnu.org; 10 Mar 2017 18:04:09 +0000 Received: from localhost ([127.0.0.1]:49941 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1cmOtd-0007Hx-Fa for submit <at> debbugs.gnu.org; Fri, 10 Mar 2017 13:04:09 -0500 Received: from eggs.gnu.org ([208.118.235.92]:54241) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <porton@HIDDEN>) id 1cmOrY-0007Dc-VH for submit <at> debbugs.gnu.org; Fri, 10 Mar 2017 13:02:02 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <porton@HIDDEN>) id 1cmOrS-0006lV-Qt for submit <at> debbugs.gnu.org; Fri, 10 Mar 2017 13:01:55 -0500 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=0.8 required=5.0 tests=BAYES_50,FREEMAIL_FROM, T_DKIM_INVALID autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:47080) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from <porton@HIDDEN>) id 1cmOrS-0006lR-O5 for submit <at> debbugs.gnu.org; Fri, 10 Mar 2017 13:01:54 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45210) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from <porton@HIDDEN>) id 1cmOrR-0003p2-PY for bug-diffutils@HIDDEN; Fri, 10 Mar 2017 13:01:54 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <porton@HIDDEN>) id 1cmOrN-0006hA-SR for bug-diffutils@HIDDEN; Fri, 10 Mar 2017 13:01:53 -0500 Received: from forward12p.cmail.yandex.net ([87.250.241.138]:60150) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from <porton@HIDDEN>) id 1cmOrN-0006cr-Gr for bug-diffutils@HIDDEN; Fri, 10 Mar 2017 13:01:49 -0500 Received: from smtp2p.mail.yandex.net (smtp2p.mail.yandex.net [IPv6:2a02:6b8:0:1472:2741:0:8b6:7]) by forward12p.cmail.yandex.net (Yandex) with ESMTP id 2030E21302 for <bug-diffutils@HIDDEN>; Fri, 10 Mar 2017 21:01:46 +0300 (MSK) Received: from smtp2p.mail.yandex.net (localhost.localdomain [127.0.0.1]) by smtp2p.mail.yandex.net (Yandex) with ESMTP id 0C3671A8003D for <bug-diffutils@HIDDEN>; Fri, 10 Mar 2017 21:01:45 +0300 (MSK) Received: by smtp2p.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id 6kkm7chHfC-1i4Kdrr9; Fri, 10 Mar 2017 21:01:45 +0300 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client certificate not present) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=narod.ru; s=mail; t=1489168905; bh=4xeDhxIF+8X/7xILW8b7hzMaBU8lz9g2R/6YSP9/44g=; h=Message-ID:Subject:From:To:Date; b=F7rywAhHP1uhIC0paxdeiC1I1CwiZXpum9csqctGN7uj/JZpO50wVegLfjVKpR3Eu JdQBQCoHHvkLry1xf79FhWM3s8x1mNhmmJlaesmctRXE1sV/uKz4OVF/0L2gwXbqc/ 6wn+aU1P+CtKOAMp71w+viHEPt9TFI7Tm7FHNPN8= Authentication-Results: smtp2p.mail.yandex.net; dkim=pass header.i=@narod.ru X-Yandex-Suid-Status: 1 0 Message-ID: <1489168903.4876.2.camel@HIDDEN> From: Victor Porton <porton@HIDDEN> Date: Fri, 10 Mar 2017 20:01:43 +0200 Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.22.5-1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.0 (----) X-Mailman-Approved-At: Fri, 10 Mar 2017 13:04:08 -0500 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -4.0 (----) Let we have N files (or directories). I want to split this N-element set into a partition (and display this partition to the user) by "being identical" equivalence relation. Note that being identical may sometimes be relaxed, for example the amount of whitespace may not matter. This utility would be useful for refactoring (restructuring) code when several functions or modules are merged together, to find which code is identical and which is not. Concerning implementation: For strict equality (without relaxing it to ignore whitespace or like this), it can be efficiently implemented using hashes. For relaxed utility, `diff` needs to be invoked. Well, sometimes relaxed equality can be also done with hashes: For example, replace all sequences of spaces with one space before calculating the hash.
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: Victor Porton <porton@HIDDEN> Subject: bug#26052: Acknowledgement (Feature suggestion: Identifying identical files) Message-ID: <handler.26052.B.148916904928026.ack <at> debbugs.gnu.org> References: <1489168903.4876.2.camel@HIDDEN> X-Gnu-PR-Message: ack 26052 X-Gnu-PR-Package: diffutils Reply-To: 26052 <at> debbugs.gnu.org Date: Fri, 10 Mar 2017 18:05:02 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-diffutils@HIDDEN If you wish to submit further information on this problem, please send it to 26052 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 26052: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D26052 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.