Paul Eggert <eggert@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Received: (at 35145) by debbugs.gnu.org; 8 Apr 2019 04:52:10 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Apr 08 00:52:10 2019 Received: from localhost ([127.0.0.1]:48915 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1hDMGP-0002gD-7Q for submit <at> debbugs.gnu.org; Mon, 08 Apr 2019 00:52:09 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:54750) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eggert@HIDDEN>) id 1hDMGN-0002fz-Lj for 35145 <at> debbugs.gnu.org; Mon, 08 Apr 2019 00:52:08 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id F22A8161269; Sun, 7 Apr 2019 21:52:01 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id t1iEsnZ-cE3V; Sun, 7 Apr 2019 21:52:00 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id BE4D7161662; Sun, 7 Apr 2019 21:52:00 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id lqPOkqTF3jM8; Sun, 7 Apr 2019 21:52:00 -0700 (PDT) Received: from [192.168.1.9] (cpe-23-242-74-103.socal.res.rr.com [23.242.74.103]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 9BFCE161269; Sun, 7 Apr 2019 21:52:00 -0700 (PDT) Subject: Re: bug#35145: additional fields like for comments by gzip To: =?UTF-8?Q?J=c3=b6rg_Jenderek?= <joerg.jen.der.ek@HIDDEN> References: <3ba80835-5aec-7a06-c946-d88a2453c199@HIDDEN> <dd274c19-3143-e2b1-5cbb-4dc6da741122@HIDDEN> <205c6372-0a81-71f1-1b25-35b13005221a@HIDDEN> From: Paul Eggert <eggert@HIDDEN> Organization: UCLA Computer Science Department Message-ID: <53edd55e-4e19-2cc9-0905-519480e2f26a@HIDDEN> Date: Sun, 7 Apr 2019 21:52:00 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <205c6372-0a81-71f1-1b25-35b13005221a@HIDDEN> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 35145 Cc: 35145 <at> debbugs.gnu.org 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: -3.3 (---) J=C3=B6rg Jenderek wrote: > normally files compressed with gzip have filename extension "gz" and > mime type "application/gzip". When compressing tar archives often > these get file name extension "tgz". > The VirtualBox Extension Packs seems to be also gzipped tar archives. > But these get their own file name extension "vbox-extpack" and mime > type "application/x-virtualbox-vbox-extpack" at least for > VirtualBox 6.0.4 on Windows systems. > I am trying to refine definitions for file identifying utilies TrID > ( http://mark0.net/soft-trid-e.html) and file ( > ftp://ftp.astron.com/pub/file ). Such utilities simply use some > characteristics byte patterns to identify file types. As far as i can > see, it is not possible at the moment for both utilities to > distinguish gzipped tar files from VirtualBox extension packages. If > the gzipped file would contain a comment field or other extra field, > it would be possible to distinguish such different file types. OK, I see; you're trying to improve TrID etc., since they're not smart en= ough to=20 uncompress the file to figure out its file type. However, can't these uti= lities=20 use file name extensions? If so, I suggest using some extension like ".ve= p" for=20 VirtualBox Extension Packs, as that won't require changing gzip and other= =20 programs that accept and consume gzip files.
bug-gzip@HIDDEN:bug#35145; Package gzip.
Full text available.Received: (at 35145) by debbugs.gnu.org; 4 Apr 2019 21:45:19 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Apr 04 17:45:19 2019 Received: from localhost ([127.0.0.1]:44763 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1hCAAh-00046t-4M for submit <at> debbugs.gnu.org; Thu, 04 Apr 2019 17:45:19 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:49534) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eggert@HIDDEN>) id 1hCAAe-00046c-ND for 35145 <at> debbugs.gnu.org; Thu, 04 Apr 2019 17:45:18 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 8BCAD1614DB; Thu, 4 Apr 2019 14:45:10 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id oe1QxsYT4rVa; Thu, 4 Apr 2019 14:45:09 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id CFD12161516; Thu, 4 Apr 2019 14:45:09 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id b4MV7KKuaBb9; Thu, 4 Apr 2019 14:45:09 -0700 (PDT) Received: from Penguin.CS.UCLA.EDU (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id B6AC81614C9; Thu, 4 Apr 2019 14:45:09 -0700 (PDT) Subject: Re: bug#35145: additional fields like for comments by gzip To: =?UTF-8?Q?J=c3=b6rg_Jenderek?= <joerg.jen.der.ek@HIDDEN>, 35145 <at> debbugs.gnu.org References: <3ba80835-5aec-7a06-c946-d88a2453c199@HIDDEN> From: Paul Eggert <eggert@HIDDEN> Openpgp: preference=signencrypt Autocrypt: addr=eggert@HIDDEN; prefer-encrypt=mutual; keydata= xsFNBEyAcmQBEADAAyH2xoTu7ppG5D3a8FMZEon74dCvc4+q1XA2J2tBy2pwaTqfhpxxdGA9 Jj50UJ3PD4bSUEgN8tLZ0san47l5XTAFLi2456ciSl5m8sKaHlGdt9XmAAtmXqeZVIYX/UFS 96fDzf4xhEmm/y7LbYEPQdUdxu47xA5KhTYp5bltF3WYDz1Ygd7gx07Auwp7iw7eNvnoDTAl KAl8KYDZzbDNCQGEbpY3efZIvPdeI+FWQN4W+kghy+P6au6PrIIhYraeua7XDdb2LS1en3Ss mE3QjqfRqI/A2ue8JMwsvXe/WK38Ezs6x74iTaqI3AFH6ilAhDqpMnd/msSESNFt76DiO1ZK QMr9amVPknjfPmJISqdhgB1DlEdw34sROf6V8mZw0xfqT6PKE46LcFefzs0kbg4GORf8vjG2 Sf1tk5eU8MBiyN/bZ03bKNjNYMpODDQQwuP84kYLkX2wBxxMAhBxwbDVZudzxDZJ1C2VXujC OJVxq2kljBM9ETYuUGqd75AW2LXrLw6+MuIsHFAYAgRr7+KcwDgBAfwhPBYX34nSSiHlmLC+ KaHLeCLF5ZI2vKm3HEeCTtlOg7xZEONgwzL+fdKo+D6SoC8RRxJKs8a3sVfI4t6CnrQzvJbB n6gxdgCu5i29J1QCYrCYvql2UyFPAK+do99/1jOXT4m2836j1wARAQABzSBQYXVsIEVnZ2Vy dCA8ZWdnZXJ0QGNzLnVjbGEuZWR1PsLBfgQTAQIAKAUCTIByZAIbAwUJEswDAAYLCQgHAwIG FQgCCQoLBBYCAwECHgECF4AACgkQ7ZfpDmKqfjRRGw/+Ij03dhYfYl/gXVRiuzV1gGrbHk+t nfrI/C7fAeoFzQ5tVgVinShaPkZo0HTPf18x6IDEdAiO8Mqo1yp0CtHmzGMCJ50o4Grgfjlr 6g/+vtEOKbhleszN2XpJvpwM2QgGvn/laTLUu8PH9aRWTs7qJJZKKKAb4sxYc92FehPu6FOD 0dDiyhlDAq4lOV2mdBpzQbiojoZzQLMQwjpgCTK2572eK9EOEQySUThXrSIz6ASenp4NYTFH s9tuJQvXk9gZDdPSl3bp+47dGxlxEWLpBIM7zIONw4ks4azgT8nvDZxA5IZHtvqBlJLBObYY 0Le61Wp0y3TlBDh2qdK8eYL426W4scEMSuig5gb8OAtQiBW6k2sGUxxeiv8ovWu8YAZgKJfu oWI+uRnMEddruY8JsoM54KaKvZikkKs2bg1ndtLVzHpJ6qFZC7QVjeHUh6/BmgvdjWPZYFTt N+KA9CWX3GQKKgN3uu988yznD7LnB98T4EUH1HA/GnfBqMV1gpzTvPc4qVQinCmIkEFp83zl +G5fCjJJ3W7ivzCnYo4KhKLpFUm97okTKR2LW3xZzEW4cLSWO387MTK3CzDOx5qe6s4a91Zu ZM/j/TQdTLDaqNn83kA4Hq48UHXYxcIh+Nd8k/3w6lFuoK0wrOFiywjLx+0ur5jmmbecBGHc 1xdhAFHOwU0ETIByZAEQAKaF678T9wyH4wjTrV1Pz3cDEoSnV/0ZUrOT37p1dcGyj/IXq1x6 70HRVahAmk0sZpYc25PF9D5GPYHFWlNjuPU96rDndXB3hedmBRhLdC4bAXjI4DV+bmdVe+q/ IMnlZRaVlm9EiMCVAR6w13sReu7qXkW9r3RwY2AzXskp/tAe4BRKr1Zmbvi2nbnQ6epEC42r Rbx0B1EhjbIQZ5JHGk24iPT7LdBgnNmos5wYjzwNlkMQD5T0Ydzhk7J+UxwA5m46mOhRDC2r FV/A0gm5TLy8DXjv/Esc4gYnYai6SQqnUEVh5LuV8YCJBnijs+Tiw71x1icmn6xGI45EugJO gec+rLypYgpVp4x0HI5T88qBRYCkxH3Kg8Qo+EWNA9A4LRQ9DX8njona0gf0s03tocK8kBN6 6UoqqPtHBnc4eMgBymCflK12eKfd2YYxnyg9cZazWA5VslvTxpm76hbg5oiAEH/Vg/8MxHyA nPhfrgwyPrmJEcVBafdspJnYQxBYNco2LFPIhlOvWh8r4at+s+M3Lb26oUTczlgdW1Sf3SDA 77BMRnF0FQyE+7AzV79MBN4ykiqaezQxtaF1Fy/tvkhffSo8u+dwG0EgJh+te38gTcISVr0G IPplLz6YhjrbHrPRF1CN5UuL9DBGjxuN35RLNVEfta6RUFlR6NctTjvrABEBAAHCwWUEGAEC AA8FAkyAcmQCGwwFCRLMAwAACgkQ7ZfpDmKqfjSrHA/+KzAKvTxRhA9MWNLxIyJ7S5uJ16gs T3oCjZrBKGEhKMOGX4O0GA6VOEryO7QRCCYah3oxSG38IAnNeiwJXgU9Bzkk85UGbPEd7HGF /VSeHCQwWou6jqUDTSDvn9YhNTdG0KXPM74aC+xr2Zow1O2mhXihgWKD0Dw+0LYPnUOsQ0KO FxHXXYHmRrS1OZPU59BLvc+TRhIhafSHKLwbXK+6ckkxBx6h8z5ccpG0Qs4bFhdFYnFrEieD LoGmnE2YLhdV6swJ9VNCS6pLiEohT3fm7aXm15tZOIyzMZhHRSAPblXxQ0ZSWjq8oRrcYNFx c4W1URpAkBCOYJoXvQfD5L3lqAl8TCqDUzYxhH/tJhbDdHrqHH767jaDaTB1+Talp/2AMKwc XNOdiklGxbmHVG6YGl6g8Lrbsu9NZEI4yLlHzuikthJWgz+3vZhVGyNlt+HNIoF6CjDL2omu 5cEq4RDHM44QqPk6l7O0pUvN1mT4B+S1b08RKpqm/ff015E37HNV/piIvJlxGAYz8PSfuGCB 1thMYqlmgdhd9/BabGFbGGYHA6U4/T5zqU+f6xHy1SsAQZ1MSKlLwekBIT+4/cLRGqCHjnV0 q5H/T6a7t5mPkbzSrOLSo4puj+IToNjYyYIDBWzhlA19avOa+rvUjmHtD3sFN7cXWtkGoi8b uNcby4U= Organization: UCLA Computer Science Department Message-ID: <dd274c19-3143-e2b1-5cbb-4dc6da741122@HIDDEN> Date: Thu, 4 Apr 2019 14:45:09 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <3ba80835-5aec-7a06-c946-d88a2453c199@HIDDEN> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 35145 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: -3.3 (---) On 4/4/19 6:23 AM, J=C3=B6rg Jenderek wrote: > Does there exist in gzip command an option to create such fields or > is this feature not implemented? And if not can this implemented? As far as I know gzip has no such feature. Of course it could be implemented, as a wishlist item. What would be the use case?
bug-gzip@HIDDEN:bug#35145; Package gzip.
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Thu, 04 Apr 2019 15:23:37 +0200 From: =?UTF-8?Q?J=c3=b6rg_Jenderek?= <joerg.jen.der.ek@HIDDEN> Subject: additional fields like for comments by gzip To: mailing list bug-gzip <bug-gzip@HIDDEN> Openpgp: preference=signencrypt Organization: GMX Message-ID: <3ba80835-5aec-7a06-c946-d88a2453c199@HIDDEN> Date: Thu, 4 Apr 2019 15:23:37 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:Wmg5QQXYWfTYM7A6G3Uy82t+bRv1x4gCjwaHavHYXAX8aGteMv8 QJ3YrXGGZDY4KtIVywSTaY74WDcR0JdIuV7KV/3AyCn6pKF03V5e23MuKLPifgOycG31fL0 hQxwom0qyDlcofiD2QTxxtgtVQBjf/IsuGe54xnwUaGxVs9gSENHd3dOYEKTKFKXpB+FVs5 Td1HgOxpmZCUnlpMaty1g== X-UI-Out-Filterresults: notjunk:1;V03:K0:Wu2WTvbo6gw=:yCZUu0jpY/ZmNhN+2bFZ4z 2L6boHoDTptERAX2ICiDqQXHxaWLggwtYQBLc4MWpTNUk/ic92aF+HO+KLyLTwZhWiwCNqqVQ v5Nr7PCkFHm86JTgC64aJnz2iolsOq5NuAUpfoYyymG558z8TiXmht02C4qJxtKtp8Ae95N/j Uz3V4tNB5x4OouRtOmZPjXz1f6HpOvji7N/BgOrjl5kUSc6TSONc9fdAhO8zKyYACok6ceVKp W5cIU5eQAEwPNf+I221P/1Su2z5jY1nWiRzb0QHqyBxa4n1OaQ7p0cUsZ5sPB614+MTJNz46P ed4pZsOIqK+/5tXeQbGfvkRtjNYADRWktd7SXIshL8eEO9MffzRAvqm3mG7hE7ornUS7Pw9Sw ujPzToH0Ab01+Wza+F8wGQZ+1h4XZrrul/ItEPz1QfZ5pXDg4tCG22kOEQumQKtKc8Is+rVMy M1jo8js7oB0yYWUUehWjJs5Okq03zUgSQDNhs40iFvV724HVoPphBzy/Obcw+nGcJTNPVs7zl 26yt9AJQcitt9NqwM38fKV43n1fK/cnbVXYyOkLANTcLDxBpJ96wU0Yx+EYFfTYK91NlgjT2/ M1kVc0JJVjtfySVUTEP2q9e1IWYb2JQAilCdQzlMtBBeTsnknWHXSCbjg0c9li87QU/lh0Je0 mG6Fp7yoe8JJdR2EjGp+8IBdOirIoKcQdMp3xxg3HyXsnIImT2i/Gc7Fhya57AcIZex/6qqZo TVQmeJAlnq2/rpRjc+eBicCIsSoORYC/fKXJ4Gindopkdwsf4hXypNoSnKKfokl0jPsXtBykW PN723su2Zv2sWwcee4b1yW8a0msKAoumlZkFiOsU9Ol0yo102A+O2vPvffgjCB7o4QFqeVlRu NaBmgBDz8WabKJmcS/UxIjes0qI8l+8GKNsJmxySQW58tJ70OxAi7CEg4x0oTy9b9ZBVhJHfx 90b4eOW5pIg== X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 212.227.17.20 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Spam-Score: 0.9 (/) X-Debbugs-Envelope-To: submit X-Mailman-Approved-At: Thu, 04 Apr 2019 11:21:47 -0400 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: -0.1 (/) Hello, According to rfc1952 a gzip compressed file could contain additional fields like a comment-field at the beginning. But i saw no option in gzip command to create such fields. I have tried gzip version 1.3.12, 1.6, 1.9 on Windows, Linux and Raspian systems. Does there exist in gzip command an option to create such fields or is this feature not implemented? And if not can this implemented? Thanks for advices and answers J=C3=B6rg Jenderek =2D- J=C3=B6rg Jenderek
Jörg Jenderek <joerg.jen.der.ek@HIDDEN>:bug-gzip@HIDDEN.
Full text available.bug-gzip@HIDDEN:bug#35145; Package gzip.
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