Puts versus print in rbx

putnprint.rb

def puts(*a)
  $stdout.puts(*a)
  nil
end

def puts(*args)
  if args.empty?
    write DEFAULT_RECORD_SEPARATOR
  else
    args.each do |arg|
      if arg.equal? nil
        str = "nil"
      elsif Thread.guarding? arg
        str = "[...]"
      elsif arg.kind_of?(Array)
        Thread.recursion_guard arg do
          arg.each do |a|
            puts a
          end
        end
      else
        str = arg.to_s
      end

      if str
        write str
        write DEFAULT_RECORD_SEPARATOR unless str.suffix?(DEFAULT_RECORD_SEPARATOR)
      end
    end
  end

  nil
end

def print(*args)
  args.each do |obj|
    $stdout.write obj.to_s
  end
  nil
end

def print(*args)
  if args.empty?
    write $_.to_s
  else
    args.each { |o| write o.to_s }
  end

  write $\.to_s
  nil
end