old_contents: from ..char_classes import LIST_ICONS, LIST_ELLIPSES
  from ..char_classes import CONCAT_QUOTES, ALPHA_LOWER, ALPHA_UPPER, ALPHA
  from ..char_classes import HYPHENS
  from ..punctuation import TOKENIZER_SUFFIXES
  
  
  _infixes = (
      LIST_ELLIPSES
      + LIST_ICONS
      + [
          r"(?<=[0-9])[+\*^](?=[0-9-])",
          r"(?<=[{al}{q}])\.(?=[{au}{q}])".format(
              al=ALPHA_LOWER, au=ALPHA_UPPER, q=CONCAT_QUOTES
          ),
          r"(?<=[{a}]),(?=[{a}])".format(a=ALPHA),
          r"(?<=[{a}])(?:{h})(?=[{a}])".format(a=ALPHA, h=HYPHENS),
          r"(?<=[{a}0-9])[:<>=/](?=[{a}])".format(a=ALPHA),
      ]
  )
  
  
  _suffixes = ["\."] + list(TOKENIZER_SUFFIXES)
  
  
  TOKENIZER_INFIXES = _infixes
  TOKENIZER_SUFFIXES = _suffixes
  
new_contents: from ..char_classes import LIST_ICONS, LIST_ELLIPSES
  from ..char_classes import CONCAT_QUOTES, ALPHA_LOWER, ALPHA_UPPER, ALPHA
  from ..char_classes import HYPHENS
  from ..punctuation import TOKENIZER_SUFFIXES
  
  
  _infixes = (
      LIST_ELLIPSES
      + LIST_ICONS
      + [
          r"(?<=[0-9])[+\*^](?=[0-9-])",
          r"(?<=[{al}{q}])\.(?=[{au}{q}])".format(
              al=ALPHA_LOWER, au=ALPHA_UPPER, q=CONCAT_QUOTES
          ),
          r"(?<=[{a}]),(?=[{a}])".format(a=ALPHA),
          r"(?<=[{a}])(?:{h})(?=[{a}])".format(a=ALPHA, h=HYPHENS),
          r"(?<=[{a}0-9])[:<>=/](?=[{a}])".format(a=ALPHA),
      ]
  )
  
  
  _suffixes = [r"\."] + list(TOKENIZER_SUFFIXES)
  
  
  TOKENIZER_INFIXES = _infixes
  TOKENIZER_SUFFIXES = _suffixes
  
subject: Fix escape sequence