module Nokogiri::HTML5::Node

def inner_html(options = {})
  return super(options) unless document.is_a?(HTML5::Document)
  result = options[:preserve_newline] && HTML5.prepend_newline?(self) ? String.new("\n") : String.new
  result << children.map { |child| child.to_html(options) }.join
  result
end