# File lib/xtemplate/node.rb, line 95
    def deep_dup(p = nil)
      node = XNode.new(@name && @name.dup,
                       @attrs && @attrs.dup, nil, p,
                       @data_path && @data_path.dup,
                       @propagation,
                       @exname && @exname.dup,
                       @exattr && @exattr.dup,
                       @expand, @alt, @option.dup)
      node.children = @children.collect{|child|
        if( child.is_a?(XNode) )
          child.deep_dup(node)
        else
          child
        end
      }
      node
    end