code: def _handle_posix(self, i, result, end_range):
          
  
          last_posix = False
          m = i.match(RE_POSIX)
          if m:
              last_posix = True
              # Cannot do range with posix class
              # so escape last `-` if we think this
              # is the end of a range.
              if end_range and i.index - 1 >= end_range:
                  result[-1] = '\\' + result[-1]
              posix_type = uniprops.POSIX_BYTES if self.is_bytes else uniprops.POSIX
              result.append(uniprops.get_posix_property(m.group(1), posix_type))
          return last_posix
docs: Handle posix classes.