B_L
if (bp->b_type == B_L) {
assert(bp->b_type == B_L);
if (bp->b_type == B_L) {
bp->b_type = B_L;
if ((bp->b_flags & (B_R | B_L)) == 0) {
bp->b_type = B_L;
bp->b_type = B_L;
(bp->b_type == B_L) ? "L" :