From: SER Date: 2004-08-04T03:06:37+09:00 Subject: Re: [BUG?] NoMethodError in REXML::Xpath.match in Ruby 1.9 > irb(main):011:0> xml = REXML::Element.new('element > attr="aaa"') > => That's your problem. Actually, it is my problem; REXML shouldn't allow you to create an element with a tag name that has illegal characters in it -- while it does check for illegal characters during parsing, it is much more liberal when creating tags programmatically, as you're doing here. What is happening is that you aren't creating an element named 'element' here -- you're creating an element named 'element attr="aaa"'. What you want to do is: xml = REXML::Element.new( 'element', {'attr'=>'aaa'} ) or xml = REXML::Element.new( 'element' ) xml.attributes[ 'attr' ] = 'aaa' --- SER