B_H
assert(bp->b_type == (B_H | B_R));
bp->b_type &= ~B_H;
bp->b_type = B_H | B_R;
if (bp->b_type == (B_H | B_R)) {
bp->b_type = B_H;
if (bp->b_type == B_H) {
(bp->b_type == (B_H | B_R)) ? "HR" :
(bp->b_type == B_H) ? "H" :