From owner-svn-ports-head@FreeBSD.ORG  Thu Mar 28 02:41:14 2013
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Date: Thu, 28 Mar 2013 02:41:14 +0000
From: Alexey Dokuchaev <danfe@FreeBSD.org>
To: Xin LI <delphij@FreeBSD.org>
Subject: Re: svn commit: r315412 - head/security/vuxml
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On Wed, Mar 27, 2013 at 08:44:51PM +0000, Xin LI wrote:
> New Revision: 315412
> URL: http://svnweb.freebsd.org/changeset/ports/315412
> 
> Log:
>   Explicitly use -E for sed(1).
>   
>   Submitted by:	des
>   Reviewed by:	eadler
> 
> -	@unexpand "${VUXML_FILE}" | ${SED} 's,[[:space:]]*$$,,g' > "${VUXML_FILE}.unexpanded"
> +	@unexpand "${VUXML_FILE}" | ${SED} -E 's,[[:space:]]*$$,,g' > "${VUXML_FILE}.unexpanded"

Why -e is insufficient here?

./danfe