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Date: Wed, 23 Jan 2002 13:26:31 -0500
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: stop cygwin sed adding ^M
Message-ID: <20020123182631.GA16029@redhat.com>
Reply-To: cygwin AT cygwin DOT com
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References: <C2D7D58DBFE9D111B0480060086E96350689BB99 AT mail_server DOT gft DOT com> <20020123175442 DOT GJ6765 AT redhat DOT com> <20020123191418 DOT F11608 AT cygbert DOT vinschen DOT de>
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On Wed, Jan 23, 2002 at 07:14:18PM +0100, Corinna Vinschen wrote:
>On Wed, Jan 23, 2002 at 12:54:42PM -0500, Chris Faylor wrote:
>> On Wed, Jan 23, 2002 at 03:58:57PM +0100, Schaible, Jorg wrote:
>> >May be you should read the FAQ regarding text mounts ??
>> 
>> sed is a fully ported utility.  It is supposed to read CRLF text on
>> standard input and produce only UNIX-style newline endings on standard
>> output.
>
>There's one situation I know that it actually converts LF to CRLF.
>
>Say, you have a file foo:
>
>$ od -c foo
>0000000   h   a   l   l   o  \n
>0000006
>
>and your currently in a textmode mounted directory, then
>
>$ sed -e 's/ll/nn/' foo > bar
>
>creates actually a CRLF file bar:
>
>$ od -c bar
>0000000   h   a   n   n   o  \r  \n
>0000007
>
>and that's defined behaviour.  That isn't even going on in sed.
>The stdio redirection has already happened in the shell and sed
>is just using that file descriptor.

I stand corrected.

Sorry for the misinformation.

cgf

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