mercurial/revlogutils/deltas.py

40426:588f1e9a4d16

            return
    for candidates in _rawgroups(revlog, p1, p2, cachedelta):
        good = yield candidates
        if good is not None:
            break

    # if we have a refinable value, try to refine it
    if good is not None and good not in (p1, p2) and revlog.issnapshot(good):
        # refine snapshot down
        previous = None

40428:bafa1c4bb7a8

            return
    for candidates in _rawgroups(revlog, p1, p2, cachedelta):
        good = yield candidates
        if good is not None:
            break

    # If sparse revlog is enabled, we can try to refine the available deltas
    if not revlog._sparserevlog:
        yield None
        return

    # if we have a refinable value, try to refine it
    if good is not None and good not in (p1, p2) and revlog.issnapshot(good):
        # refine snapshot down
        previous = None