class Kramdown::Parser::Kramdown

def update_attr_with_ial(attr, ial)
  ial[:refs].each do |ref|
    update_attr_with_ial(attr, ref) if ref = @doc.parse_infos[:ald][ref]
  end if ial[:refs]
  attr['class'] = ((attr['class'] || '') + " #{ial['class']}").lstrip if ial['class']
  ial.each {|k,v| attr[k] = v if k.kind_of?(String) && k != 'class' }
end