# File lib/rexml/attribute.rb, line 114
                def to_s
                        return @normalized if @normalized

                        doctype = nil
                        if @element
                                doc = @element.document
                                doctype = doc.doctype if doc
                        end

                        @normalized = Text::normalize( @unnormalized, doctype )
                        @unnormalized = nil
      @normalized
                end