class Kramdown::Parser::Kramdown

def update_attr_with_ial(attr, ial)
  ial[:refs].each do |ref|
    update_attr_with_ial(attr, ref) if ref = @alds[ref]
  end if ial[:refs]
  ial.each do |k,v|
    if k == IAL_CLASS_ATTR
      attr[k] = (attr[k] || '') << " #{v}"
      attr[k].lstrip!
    elsif k.kind_of?(String)
      attr[k] = v
    end
  end
end