Paul Eggert <eggert@HIDDEN>
to control <at> debbugs.gnu.org
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Full text available.Received: (at submit) by debbugs.gnu.org; 7 Sep 2019 21:12:23 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Sep 07 17:12:23 2019 Received: from localhost ([127.0.0.1]:38147 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1i6i0M-0001FU-Rd for submit <at> debbugs.gnu.org; Sat, 07 Sep 2019 17:12:23 -0400 Received: from lists.gnu.org ([209.51.188.17]:43166) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <stokito@HIDDEN>) id 1i6i0K-0001FI-OV for submit <at> debbugs.gnu.org; Sat, 07 Sep 2019 17:12:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43897) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from <stokito@HIDDEN>) id 1i6i0J-0000bZ-AJ for bug-gzip@HIDDEN; Sat, 07 Sep 2019 17:12:20 -0400 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, HTML_MESSAGE,SPOOFED_FREEMAIL autolearn=disabled version=3.3.2 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from <stokito@HIDDEN>) id 1i6i0I-0007PI-2f for bug-gzip@HIDDEN; Sat, 07 Sep 2019 17:12:19 -0400 Received: from mail-io1-xd2b.google.com ([2607:f8b0:4864:20::d2b]:42834) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from <stokito@HIDDEN>) id 1i6i0H-0007Ox-RV for bug-gzip@HIDDEN; Sat, 07 Sep 2019 17:12:18 -0400 Received: by mail-io1-xd2b.google.com with SMTP id n197so20543371iod.9 for <bug-gzip@HIDDEN>; Sat, 07 Sep 2019 14:12:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=JGjsg0Z8IripXKxJqJNo1wMzhPYka5eeSQt644hJHPw=; b=dKXPW1ZRLTSqHdNuwpqUZf1W0mXt4N5cBQLVIRaOovrmo0e/PbA+onHYgwAqAfnRnv ta3KwHA8IRl+P3Y2Yet0NLAjoriQYbsK8K5Ng7PO14tTEzFgad7GXmhM9eP19NIHMD9R uztsONKs/qaANikWE+uA/SvzyMpwq5QqRZ7pTTCo1QQ6EEy2oY3J2bdYdwDBBw5TK0cf bFh18tZD+jGxW7PkoeqV5w1IXxKLknk+5WD3UDuVqdViYH0tlT1bG3xtuCMQ0ttuXqsO rmtlLgRByf/HwuzjPg6R6w78cMGWERwf0rL8I99ewfxj8EGXpkwxC2RkEBq3Pbif2jya n1+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=JGjsg0Z8IripXKxJqJNo1wMzhPYka5eeSQt644hJHPw=; b=AXibzj7RB50Pj1Rq4H559qT1eXsf3CluiohK/G8iQpDjNExxVm1XXBDfdtqT5jHwMk sSYnh81Y/HLCxAhDIHULbarYBIfeYvT2wj+hPATZ+lm1xLuh90qulv9m9n9BYIbbHFtb 0NhxpYRf6ZGbRJFvYq9YcDs39xFDXHhIZnVqz+lSDTETPOT4YAc51q7c27PE3qCGNu/O Ju1VKEue8Rox+McO7cEQ0ilt4zjaE2rV/WGn9/DJBjA5ENSZerkJZ9va4K9MVK4rVP8c m7hhjnmTjYBlij5NAgiguaMr3B+yZGT3mAazCDMxjcUg5hi82qNtTECOxXNlT0NEi9Ep oEqg== X-Gm-Message-State: APjAAAX3pLhUdKjRbExSMQbyu9SBgS4LatlLS9kgquR6/3EYAOueTWa0 +ZyWkwsOm2brNiblxrO0MgVPaGYlLdyDYRERhkDAxAXd3x0= X-Google-Smtp-Source: APXvYqzKHG5If5NX2u4S/p8U9ZP9czOtYuGU8ObWFCkzmplEFythzEHYzUr/jRU2x/bv1AVi72g5WfEXPp1Mi9lUYbU= X-Received: by 2002:a02:a615:: with SMTP id c21mr17734231jam.117.1567890736407; Sat, 07 Sep 2019 14:12:16 -0700 (PDT) MIME-Version: 1.0 From: Sergey Ponomarev <stokito@HIDDEN> Date: Sun, 8 Sep 2019 00:11:40 +0300 Message-ID: <CADR0UcXxApdrRTf2oGxAXRJCn27oOp61W_jraWQCP2-hasdQxQ@HIDDEN> Subject: Allow to decompress files without .gz suffix and add an option to specify output file name on decompression To: bug-gzip@HIDDEN Content-Type: multipart/alternative; boundary="00000000000063e87e0591fd02fb" X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::d2b X-Spam-Score: -1.3 (-) X-Debbugs-Envelope-To: submit 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: -2.3 (--) --00000000000063e87e0591fd02fb Content-Type: text/plain; charset="UTF-8" Hello, I have an SVG image file called image.svg. Then I gzipped and renamed it to image.svgz. The resulted *.svgz file is supported by almost all browsers as a usual image. But now I would like to extract the original file back: $ gzip -d image.svgz gzip: image.svgz: unknown suffix -- ignored So gzip doesn't allow me to this just because the file have not a proper .gz extension. This makes sense because gzip can't determine the output file name. But gzip by default stores an original file name (-N or -name option) so let's add -N: $ gzip -l -N idea.svgz compressed uncompressed ratio uncompressed_name 849 2489 67.0% image.svg $ gzip -d -N image.svgz gzip: image.svgz: unknown suffix -- ignored Again the same problem while I clearly specified to use an original file name. I confused and from my point of view this is a bug. But if you try to decompress to stdout (i.e. use it with pipe and output to a file) then all will be find. The similar problem have another compressors like a new one ZStandard: https://github.com/facebook/zstd/issues/754 But in zstd there is an option to clearly specify the output file name: -o file: result stored into `file` (only if 1 input file) This also solves the problem but also makes it more convinced to call pragmatically gzip without pipes (i.e. to call it from an archive manager like GNOME File Roller) So, could you consider to implement the feature or will you accept a patch from me? Regards, Sergey Ponomarev --00000000000063e87e0591fd02fb Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div>Hello,</div><div><br></div><div>I have an SVG image f= ile called image.svg. Then I gzipped and renamed it to image.svgz.</div><di= v>The resulted *.svgz file is supported by almost all browsers as a usual i= mage.</div><div>But now I would like to extract the original file back:</di= v><div><br></div><div>$ gzip -d image.svgz<br>gzip: image.svgz: unknown suf= fix -- ignored<br></div><div><br></div><div>So gzip doesn't allow me to= this just because the file have not a proper .gz extension.</div><div>This= makes sense because gzip can't determine the output file name. But gzi= p by default stores an original file name (-N or -name option) so let's= add -N:</div><div><br></div><div>$ gzip -l -N idea.svgz<br>=C2=A0 =C2=A0 c= ompressed=C2=A0 uncompressed=C2=A0 =C2=A0 =C2=A0ratio uncompressed_name<br>= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0849=C2=A0 =C2= =A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 2489 =C2=A067.0% image= .svg<br></div><div><div>$ gzip -d -N image.svgz<br>gzip: image.svgz: unknow= n suffix -- ignored<br></div><div></div></div><div><br></div><div>Again the= same problem while I clearly specified to use an original file name.</div>= <div>I confused and from my point of view this is a bug.</div><div><br></di= v><div>But if you try to decompress to stdout (i.e. use it with pipe and ou= tput to a file) then all will be find.</div><div><br></div><div>The similar= problem have another compressors like a new one ZStandard:</div><div>=C2= =A0=C2=A0<a href=3D"https://github.com/facebook/zstd/issues/754">https://gi= thub.com/facebook/zstd/issues/754</a><br></div><div><br></div><div>But in z= std there is an option to clearly specify the output file name:</div><div>-= o file: result stored into `file` (only if 1 input file)<br></div><div><br>= </div><div>This also solves the problem but also makes it more convinced to= call pragmatically gzip without pipes (i.e. to call it from an archive man= ager like GNOME File Roller)</div><div><br></div><div>So, could you conside= r to implement the feature or will you accept a patch from me?</div><div><b= r></div>Regards,<br><div dir=3D"ltr" class=3D"gmail_signature" data-smartma= il=3D"gmail_signature"><div dir=3D"ltr"><div>Sergey=C2=A0Ponomarev<br></div= ></div></div></div> --00000000000063e87e0591fd02fb--
Sergey Ponomarev <stokito@HIDDEN>
:bug-gzip@HIDDEN
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:bug#37336
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