Mailing-List: contact cygwin-apps-help AT sourceware DOT cygnus DOT com; run by ezmlm
Sender: cygwin-apps-owner AT sourceware DOT cygnus DOT com
List-Subscribe: <mailto:cygwin-apps-subscribe AT sources DOT redhat DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin-apps/>
List-Post: <mailto:cygwin-apps AT sources DOT redhat DOT com>
List-Help: <mailto:cygwin-apps-help AT sources DOT redhat DOT com>, <http://sources.redhat.com/lists.html#faqs>
Delivered-To: mailing list cygwin-apps AT sources DOT redhat DOT com
Date: Fri, 2 Nov 2001 21:43:24 -0500
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin-apps AT cygwin DOT com
Subject: Re: patches to vendor source trees - discussion
Message-ID: <20011102214324.K31918@redhat.com>
Reply-To: cygwin-apps AT cygwin DOT com
Mail-Followup-To: cygwin-apps AT cygwin DOT com
References: <1004752145 DOT 521 DOT 38 DOT camel AT lifelesswks> <20011102210311 DOT D31918 AT redhat DOT com> <1004753755 DOT 520 DOT 55 DOT camel AT lifelesswks> <20011102212558 DOT F31918 AT redhat DOT com> <1004755024 DOT 520 DOT 61 DOT camel AT lifelesswks>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1004755024.520.61.camel@lifelesswks>
User-Agent: Mutt/1.3.21i

On Sat, Nov 03, 2001 at 01:37:03PM +1100, Robert Collins wrote:
>On Sat, 2001-11-03 at 13:25, Christopher Faylor wrote:
>> On Sat, Nov 03, 2001 at 01:15:54PM +1100, Robert Collins wrote:
>> >On Sat, 2001-11-03 at 13:03, Christopher Faylor wrote:
>> >>Couldn't the patch remove itself?
>> >
>> >Not if you create the patch via diff!
>> 
>> Why?  The patch could patch itself into a zero length file and the file
>> could be removed via "patch -E".
>
>To make the patch a zero length file, the entire contents need to be
>listed with a - before each line right?
>
>so how long is a file that completely contains itself?

Yep.  You're right.  If the patch was constructed from diff and if there
was only one file, you couldn't have the patch delete itself.

cgf