module Nokogiri::XML::PP::Node

def inspect # :nodoc:
  attributes = inspect_attributes.reject { |x|
    begin
      attribute = send x
      !attribute || (attribute.respond_to?(:empty?) && attribute.empty?)
    rescue NoMethodError
      true
    end
  }.map { |attribute|
    "#{attribute.to_s.sub(/_\w+/, 's')}=#{send(attribute).inspect}"
  }.join ' '
  "#<#{self.class.name}:#{sprintf("0x%x", object_id)} #{attributes}>"
end

def pretty_print pp # :nodoc:
  nice_name = self.class.name.split('::').last
  pp.group(2, "#(#{nice_name}:#{sprintf("0x%x", object_id)} {", '})') do
    pp.breakable
    attrs = inspect_attributes.map { |t|
      [t, send(t)] if respond_to?(t)
    }.compact.find_all { |x|
      if x.last
        if [:attribute_nodes, :children].include? x.first
          !x.last.empty?
        else
          true
        end
      end
    }
    pp.seplist(attrs) do |v|
      if [:attribute_nodes, :children].include? v.first
        pp.group(2, "#{v.first.to_s.sub(/_\w+$/, 's')} = [", "]") do
          pp.breakable
          pp.seplist(v.last) do |item|
            pp.pp item
          end
        end
      else
        pp.text "#{v.first} = "
        pp.pp v.last
      end
    end
    pp.breakable
  end
end