vb latest = alloc (&_, T_LINK); detach (latest, slice, LT_RIGHT, REDUCE_SLICE);

vb latest = alloc (&_, T_LINK); detach (latest, &slice, LT_RIGHT, REDUCE_SLICE);

vb latest = alloc (&_, T_LINK); detach (latest, slice, LT_RIGHT, REDUCE_SLICE, ALLOW_EMPTY);

vb latest = alloc (&_, T_LINK); detach (latest, &slice, LT_RIGHT, REDUCE_SLICE, ALLOW_EMPTY);