lib/em-hiredis/pubsub_client.rb
def raw_send_command(sym, args)
      if @connected
        @connection.send_command(sym, args)
      else
        callback do
          @connection.send_command(sym, args)
        end
      end
      return nil
    end
def raw_send_command(sym, args)
      if @connected
        @connection.send_command(sym, args)
      else
        callback do
          @connection.send_command(sym, args)
        end
      end
      return nil
    end
Send a command to redis without adding a deferrable for it. This is
 useful for commands for which replies work or need to be treated
 differently