Mail Archives: cygwin/2003/01/10/10:42:20
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I included the WRONG sed script with the original message.
Attached is the correct one--that is, the one that creates the fuss--, with
the (obviously) missing RE.
Sorry to waste your time on that--I had been doing a lot of testing and
forgot I fiddled with the script.
Thanks,
Dwight Neal
-----Original Message-----
From: Peter S Tillier [mailto:peter_tillier AT yahoo DOT co DOT uk]
Sent: Wednesday, January 08, 2003 4:57 PM
To: Dwight Neal; cygwin AT cygwin DOT com
Subject: Re: Sed Script works in 3.02-1, fails in 4.0.1-1
----- Original Message -----
From: "Dwight Neal" <DwightN AT millbrook DOT com>
To: <cygwin AT cygwin DOT com>
Sent: Wednesday, January 08, 2003 7:33 PM
Subject: Sed Script works in 3.02-1, fails in 4.0.1-1
> I am migrating from a machine that uses a cygwin image loaded in May
2002 to
> one that uses a November 2002 download, and have a sed script that
fails in
> the newer version:
>
> (This should be a single line of input, but I'm sure it will wrap when
> emailed):
>
> sed -f modifyhtm.txt "\Web Configuration\Default_installing.htm"
> >results\Default_installing.htm
>
> The error reported is:
>
> 'sed: file modifyhtm.txt line 1: No previous regular expression'
>
As modifyhtm.txt contains:
s//<font><\/font><\/BLOCKQUOTE>/
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.
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.
HTH
Peter S Tillier
__________________________________________________
Do You Yahoo!?
Everything you'll ever need on one web page
from News and Sport to Email and Music Charts http://uk.my.yahoo.com
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
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<HEAD>
<META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; =
charset=3DUS-ASCII">
<META NAME=3D"Generator" CONTENT=3D"MS Exchange Server version =
5.5.2653.12">
<TITLE>FW: Sed Script works in 3.02-1, fails in 4.0.1-1</TITLE>
</HEAD>
<BODY>
<BR>
<BR>
<BR>
<P><FONT SIZE=3D2>I included the WRONG sed script with the original =
message.</FONT>
</P>
<P><FONT SIZE=3D2>Attached is the correct one--that is, the one that =
creates the fuss--, with the (obviously) missing RE. </FONT>
</P>
<P><FONT SIZE=3D2>Sorry to waste your time on that--I had been doing a =
lot of testing and forgot I fiddled with the script.</FONT>
</P>
<P><FONT SIZE=3D2>Thanks,</FONT>
<BR><FONT SIZE=3D2>Dwight Neal</FONT>
</P>
<BR>
<BR>
<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Peter S Tillier [<A =
HREF=3D"mailto:peter_tillier AT yahoo DOT co DOT uk">mailto:peter_tillier AT yahoo DOT co.=
uk</A>] </FONT>
<BR><FONT SIZE=3D2>Sent: Wednesday, January 08, 2003 4:57 PM</FONT>
<BR><FONT SIZE=3D2>To: Dwight Neal; cygwin AT cygwin DOT com</FONT>
<BR><FONT SIZE=3D2>Subject: Re: Sed Script works in 3.02-1, fails in =
4.0.1-1</FONT>
</P>
<BR>
<P><FONT SIZE=3D2>----- Original Message -----</FONT>
<BR><FONT SIZE=3D2>From: "Dwight Neal" =
<DwightN AT millbrook DOT com></FONT>
<BR><FONT SIZE=3D2>To: <cygwin AT cygwin DOT com></FONT>
<BR><FONT SIZE=3D2>Sent: Wednesday, January 08, 2003 7:33 PM</FONT>
<BR><FONT SIZE=3D2>Subject: Sed Script works in 3.02-1, fails in =
4.0.1-1</FONT>
</P>
<BR>
<P><FONT SIZE=3D2>> I am migrating from a machine that uses a cygwin =
image loaded in May</FONT>
<BR><FONT SIZE=3D2>2002 to</FONT>
<BR><FONT SIZE=3D2>> one that uses a November 2002 download, and =
have a sed script that</FONT>
<BR><FONT SIZE=3D2>fails in</FONT>
<BR><FONT SIZE=3D2>> the newer version:</FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>> (This should be a single line of input, but I'm =
sure it will wrap when</FONT>
<BR><FONT SIZE=3D2>> emailed):</FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>> sed -f modifyhtm.txt "\Web =
Configuration\Default_installing.htm"</FONT>
<BR><FONT SIZE=3D2>> >results\Default_installing.htm</FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>> The error reported is:</FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>> 'sed: file modifyhtm.txt line 1: No previous =
regular expression'</FONT>
<BR><FONT SIZE=3D2>></FONT>
<BR><FONT SIZE=3D2>As modifyhtm.txt contains:</FONT>
</P>
<P><FONT =
SIZE=3D2>s//<font><\/font><\/BLOCKQUOTE>/</FONT>
</P>
<P><FONT SIZE=3D2>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=3D2>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=3D2>HTH</FONT>
<BR><FONT SIZE=3D2>Peter S Tillier</FONT>
</P>
<BR>
<P><FONT =
SIZE=3D2>__________________________________________________</FONT>
<BR><FONT SIZE=3D2>Do You Yahoo!?</FONT>
<BR><FONT SIZE=3D2>Everything you'll ever need on one web page</FONT>
<BR><FONT SIZE=3D2>from News and Sport to Email and Music Charts <A =
HREF=3D"http://uk.my.yahoo.com" =
TARGET=3D"_blank">http://uk.my.yahoo.com</A></FONT>
</P>
<P><FONT FACE=3D"Arial" SIZE=3D2 COLOR=3D"#000000"></FONT>
</BODY>
</HTML>
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1,/<.BLOCKQUOTE>/s//<font face=3D"verdana" size=3D"2">When installation =
completes, click <a href=3D..\\..\\Update.asp>here <\/a>to =
return.<\/font><\/BLOCKQUOTE>/
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