1404             return dist, l, data, base, chainbase, chainlen, compresseddeltalen

  1404             return dist, l, data, base, chainbase, chainlen, compresseddeltalen

  1405 

  1405 

  1406         curr = len(self)

  1406         curr = len(self)

  1407         prev = curr - 1

  1407         prev = curr - 1

  1408         base = chainbase = curr

  1408         base = chainbase = curr

  1410         offset = self.end(prev)

  1409         offset = self.end(prev)

  1411         delta = None

  1410         delta = None

  1412         if self._basecache is None:

  1411         if self._basecache is None:

  1413             self._basecache = (prev, self.chainbase(prev))

  1412             self._basecache = (prev, self.chainbase(prev))

  1414         basecache = self._basecache

  1413         basecache = self._basecache