old_contents: 
  term_codes = {
      'fg':        (38, lambda r, g, b: ';2;{0};{1};{2}'.format(r, g, b), 'm'),
      'bg':        (48, lambda r, g, b: ';2;{0};{1};{2}'.format(r, g, b), 'm'),
      'bold':      (1,  'm'),
      'underline': (4,  'm'),
      'regular':   (23, 'm'),
      'italic':    (3,  'm'),
      'reset':     (0,  'm'),
      'back':      (lambda n=1: str(n), 'D'),
      'forward':   (lambda n=1: str(n), 'C'),
      'newline':   ('1E',),
      'up':        ('{0}'.format, 'A'),
      'down':      ('{0}'.format, 'B'),
      'save':      ('s',),
      'restore':   ('u',),
      'move':      ('{0};{1}'.format, 'H'),
      'clear':     ('2J',),
      'reverse':   ('7m',)}
  
  
  def make_escape(cmd, *args):
      def f(x):
          if hasattr(x, '__call__'):
              return x(*args)
          else:
              return str(x)
  
      return '\033[' + ''.join(map(f, term_codes[cmd]))
  
  
  class OutStream:
      def __init__(self, f):
          self.f = f
  
      def __lshift__(self, x):
          """Emulate the much liked C++ syntax for chaining output."""
          if isinstance(x, list):
              self.f.write(make_escape(*x))
              self.f.flush()
              return self
  
          if isinstance(x, str):
              self.f.write(x)
              self.f.flush()
              return self
  
          raise TypeError
  
new_contents: 
  term_codes = {
      'fg':        (38, ';2;{0};{1};{2}'.format, 'm'),
      'bg':        (48, ';2;{0};{1};{2}'.format, 'm'),
      'bold':      (1,  'm'),
      'underline': (4,  'm'),
      'regular':   (23, 'm'),
      'italic':    (3,  'm'),
      'reset':     (0,  'm'),
      'back':      (lambda n=1: str(n), 'D'),
      'forward':   (lambda n=1: str(n), 'C'),
      'newline':   ('1E',),
      'up':        ('{0}'.format, 'A'),
      'down':      ('{0}'.format, 'B'),
      'save':      ('s',),
      'restore':   ('u',),
      'move':      ('{0};{1}'.format, 'H'),
      'clear':     ('2J',),
      'reverse':   ('7m',)}
  
  
  def make_escape(cmd, *args):
      def f(x):
          if hasattr(x, '__call__'):
              return x(*args)
          else:
              return str(x)
  
      return '\033[' + ''.join(map(f, term_codes[cmd]))
  
  
  class OutStream:
      def __init__(self, f):
          self.f = f
  
      def __lshift__(self, x):
          """Emulate the much liked C++ syntax for chaining output."""
          if isinstance(x, list):
              self.f.write(make_escape(*x))
              self.f.flush()
              return self
  
          if isinstance(x, str):
              self.f.write(x)
              self.f.flush()
              return self
  
          raise TypeError
  
subject: remove unnecessary lambdas