Load command ll, run again with no args to reload the last command

.pryrc

Pry::Commands.create_command "ll" do
  description "Loads a file. If no arg is passed, will reload the last file"

  def process
    
    if (args.length == 0)
      if $PRY_MY_LAST_LL.nil?
        output.puts "No last file, aborting"
      else
        load $PRY_MY_LAST_LL
      end
    else
      $PRY_MY_LAST_LL = args.join(" ")
      load $PRY_MY_LAST_LL
    end
  end
end