Little addition to my previous reply: Multivalent apparently almost get's there. After 2 iterations most of the uncompressed file is stable, except for some binary blob at the end. Alas, it's Java and not even completely open source. Michael -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html