Check out XML::LibXML for the nice ways to do this, using standards such as XPath and DOM. Regular expressions are not a very good way to parse structured input like XML, unless you can limit the input to a known subset of XML forms.

$h=$ENV{HOME};my@q=split/\n\n/,`cat $h/.quotes`;$s="$h/."
."signature";$t=`cat $s`;print$t,"\n",$q[rand($#q)],"\n";
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