class RDoc::Markup::Formatter

def convert_special special
  return special.text if in_tt?
  handled = false
  @attributes.each_name_of special.type do |name|
    method_name = "handle_special_#{name}"
    if respond_to? method_name then
      special.text = send method_name, special
      handled = true
    end
  end
  unless handled then
    special_name = @attributes.as_string special.type
    raise RDoc::Error, "Unhandled special #{special_name}: #{special}"
  end
  special.text
end