class WEBrick::HTTPServlet::FileHandler

def get_handler(req, res)
  suffix1 = (/\.(\w+)\z/ =~ res.filename) && $1.downcase
  if /\.(\w+)\.([\w\-]+)\z/ =~ res.filename
    if @options[:AcceptableLanguages].include?($2.downcase)
      suffix2 = $1.downcase
    end
  end
  handler_table = @options[:HandlerTable]
  return handler_table[suffix1] || handler_table[suffix2] ||
         HandlerTable[suffix1] || HandlerTable[suffix2] ||
         DefaultFileHandler
end