/*
 * call-seq:
 *  new(document)
 *
 * Create a new DocumentFragment element on the +document+
 */
static VALUE new(int argc, VALUE *argv, VALUE klass)
{
  xmlDocPtr xml_doc;
  xmlNodePtr node;
  VALUE document;
  VALUE rest;
  VALUE rb_node;

  rb_scan_args(argc, argv, "1*", &document, &rest);

  Data_Get_Struct(document, xmlDoc, xml_doc);

  node = xmlNewDocFragment(xml_doc->doc);

  nokogiri_root_node(node);

  rb_node = Nokogiri_wrap_xml_node(klass, node);
  rb_obj_call_init(rb_node, argc, argv);

  if(rb_block_given_p()) rb_yield(rb_node);

  return rb_node;
}