X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:subject:to:references:from:message-id:date :mime-version:in-reply-to:content-type :content-transfer-encoding; q=dns; s=default; b=aPlSGbBENHGmWcPc gXTCzb9BDPCkJ9fPUefK8ELx5AqVCjExk7tDhtF3Iw5KwwKvNRX3Z/eDGxNYDDrl 6/gUNXPWKvdZuSFKnt6PmbXKLaHtnpsCDJqsUhG96LzkWwcCjL1Bfhrei1mWsU1F 03FFy0WH8p5RaAKRFVJ0iYAHAC4= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:subject:to:references:from:message-id:date :mime-version:in-reply-to:content-type :content-transfer-encoding; s=default; bh=v1+brgwUyLXmVwLYJpZ5ji FQPBk=; b=nPSRjrDV7Ezya3cTKpElizEiKK6qdokNLOhXgl/qI0lkk2EapsACVN U3RF9batSwkO3H90O8FpvY4EzJUkTn/JQZezkL1Jlzk7g9jfFjYH+5VaMAqeGsB+ xSi0mdgytP5v3FGPC1b85n+75UKwBNauJJJ7I42Q1WLG4BJsKXpQo= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=0.5 required=5.0 tests=AWL,BAYES_50,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.2 spammy=HX-ME-Date:Oct, HX-ME-Date:0200, HX-ME-Date:2017, H*RU:sk:smtp.sm X-HELO: smtp.smtpout.orange.fr X-ME-Helo: [192.168.0.11] X-ME-Auth: amVyb21lLmJvdWF0QHdhbmFkb28uZnI= X-ME-Date: Thu, 05 Oct 2017 21:09:52 +0200 X-ME-IP: 82.236.99.246 Subject: Re: a few tar.xz packages are bigger than their uncompressed tar To: cygwin AT cygwin DOT com References: <960ca9df83cf80f4321a69f2d8b8c0ba AT mail DOT kylheku DOT com> From: =?UTF-8?B?SsOpcsO0bWUgQm91YXQ=?= Message-ID: Date: Thu, 5 Oct 2017 21:09:51 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: <960ca9df83cf80f4321a69f2d8b8c0ba@mail.kylheku.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Hello > No compression method need ever increase the > size of the datum by more than one bit. > > The compressed representation can begin with a header > bit which is 1 to indicate "compressed" and 0 to indicate > "stored without compression". Does the xz format provide a checksum even if the file is stored without compression ? -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple