code: def t_string_UNESCAPED(self, t):
          r'[\x20-\x21,\x23-\x5B,\x5D-\xFF]+'
          t.value = t.value if isinstance(t.value, unicode) else unicode(t.value, encoding='utf8')
          return f t_string_UNESCAPED(self, t):
          r'[\x20-\x21,\x23-\x5B,\x5D-\xFF]+'
          t.value = t.value if isinstance(t.value, unicode) else unicode(t.value, encoding='utf8')
          return t
docs: r'[\x20-\x21,\x23-\x5B,\x5D-\xFF]+