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Date: Wed, 17 Oct 2001 15:52:33 +0200
From: Roman Neuhauser <neuhauser@mobil.cz>
To: freebsd-questions@freebsd.org
Subject: Re: sed question -- SOLVED
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In-Reply-To: <20011017132807.C16050@roman.mobil.cz>; from neuhauser@mobil.cz on Wed, Oct 17, 2001 at 01:28:07PM +0200
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   > Date: Wed, 17 Oct 2001 13:28:07 +0200
   > From: Roman Neuhauser <neuhauser@mobil.cz>
   > To: freebsd-questions@freebsd.org
   > Subject: sed question
   > 
   > Hi there,
   > 
   > can anyone tell me what's wrong with this command?
   > 
   > > cat somefile | sed -E '~foobar~d'
   > sed: 1: "~foobar~d": invalid command code ~
   > 
   > sed(1) says:
   > 
   >    1. In a context address, any character other than a backslash (``\'')
   >       or newline character may be used to delimit the regular expression.
   > 
   > TIA

   Sorry to bother everyone, I knew it'd be PEBKAC. In case someone else
   hits the same wall, here's how it works:

   1. ~ has a special meaning for sed, a fact I was unaware of. 
   
   2. when you want to delimit the regular expression ('address') with
   something else than slashes, you have to backslash the _opening_
   delimiter. Leave the closing one alone; you'll get "unterminated
   regular expression" otherwise.

   That's it. Happy sedding. :)
  

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