code: def _proc_gnusparse_00(self, next, pax_headers, buf):
          
          offsets = []
          for match in re.finditer(br"\d+ GNU.sparse.offset=(\d+)\n", buf):
              offsets.append(int(match.group(1)))
          numbytes = []
          for match in re.finditer(br"\d+ GNU.sparse.numbytes=(\d+)\n", buf):
              numbytes.append(int(match.group(1)))
          next.sparse = list(zip(offsets, numbytes))
docs: Process a GNU tar extended sparse header, version 0.0.