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<TITLE>FW: Sed Script works in 3.02-1, fails in 4.0.1-1</TITLE>
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<P><FONT SIZE=2>I included the WRONG sed script with the original message.</FONT>
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<P><FONT SIZE=2>Attached is the correct one--that is, the one that creates the fuss--, with the (obviously) missing RE. </FONT>
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<P><FONT SIZE=2>Sorry to waste your time on that--I had been doing a lot of testing and forgot I fiddled with the script.</FONT>
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<P><FONT SIZE=2>Thanks,</FONT>
<BR><FONT SIZE=2>Dwight Neal</FONT>
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<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: Peter S Tillier [<A HREF="mailto:peter_tillier@yahoo.co.uk">mailto:peter_tillier@yahoo.co.uk</A>] </FONT>
<BR><FONT SIZE=2>Sent: Wednesday, January 08, 2003 4:57 PM</FONT>
<BR><FONT SIZE=2>To: Dwight Neal; cygwin@cygwin.com</FONT>
<BR><FONT SIZE=2>Subject: Re: Sed Script works in 3.02-1, fails in 4.0.1-1</FONT>
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<P><FONT SIZE=2>----- Original Message -----</FONT>
<BR><FONT SIZE=2>From: "Dwight Neal" <DwightN@millbrook.com></FONT>
<BR><FONT SIZE=2>To: <cygwin@cygwin.com></FONT>
<BR><FONT SIZE=2>Sent: Wednesday, January 08, 2003 7:33 PM</FONT>
<BR><FONT SIZE=2>Subject: Sed Script works in 3.02-1, fails in 4.0.1-1</FONT>
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<P><FONT SIZE=2>> I am migrating from a machine that uses a cygwin image loaded in May</FONT>
<BR><FONT SIZE=2>2002 to</FONT>
<BR><FONT SIZE=2>> one that uses a November 2002 download, and have a sed script that</FONT>
<BR><FONT SIZE=2>fails in</FONT>
<BR><FONT SIZE=2>> the newer version:</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>> (This should be a single line of input, but I'm sure it will wrap when</FONT>
<BR><FONT SIZE=2>> emailed):</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>> sed -f modifyhtm.txt "\Web Configuration\Default_installing.htm"</FONT>
<BR><FONT SIZE=2>> >results\Default_installing.htm</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>> The error reported is:</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>> 'sed: file modifyhtm.txt line 1: No previous regular expression'</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>As modifyhtm.txt contains:</FONT>
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<P><FONT SIZE=2>s//<font><\/font><\/BLOCKQUOTE>/</FONT>
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<P><FONT SIZE=2>the reason for the error message is obvious. The // refers to a previously-compiled RE and there isn't one. This is an error in your script, not sed 4.0.1-1 and should also give the same error message with sed 3.02-1.</FONT></P>
<P><FONT SIZE=2>As Randall says using / separators in s commands when slashes are part of the RE is tricky. You can use pretty much any separator other than a backslash.</FONT></P>
<P><FONT SIZE=2>HTH</FONT>
<BR><FONT SIZE=2>Peter S Tillier</FONT>
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