class DEBUGGER__::Console

def read_history_file
  if history && File.exist?(path = history_file)
    f = (['', 'DAI-', 'CHU-', 'SHO-'].map{|e| e+'KICHI'}+['KYO']).sample
    ["#{FH}#{f}".dup] + File.readlines(path)
  else
    []
  end
end