mercurial/revlogutils/deltas.py

49775:d57b966cdeb1

    This top level function focus on emitting groups with unique and worthwhile
    content. See _raw_candidate_groups for details about the group order.
    """
    # should we try to build a delta?
    if not (len(revlog) and revlog._storedeltachains):
        yield None
        return

    deltalength = revlog.length
    deltaparent = revlog.deltaparent

49776:acdb9a15137c

    This top level function focus on emitting groups with unique and worthwhile
    content. See _raw_candidate_groups for details about the group order.
    """
    # should we try to build a delta?
    if not (len(revlog) and revlog._storedeltachains):
        yield None
        return

    if (
        cachedelta is not None
        and nullrev == cachedelta[0]
        and cachedelta[2] == DELTA_BASE_REUSE_FORCE
    ):
        # instruction are to forcibly do a full snapshot
        yield None
        return

    deltalength = revlog.length
    deltaparent = revlog.deltaparent