goto_evil.rb

state = 1
counter = 0

# Customary: "Here be evil"
# For a live version, see: https://repl.it/BiiG/1
loop do
  puts [state, counter].inspect

  case state
  when 1
    state = 2
    counter += 1
  next
  when 2
    state = 1
    counter += 1
    state = nil if counter > 3
  else
    break
  end
end