SWAP_BBUF_NOT    1837 regparse.c         SWAP_BBUF_NOT(bbuf1, not1, bbuf2, not2);
SWAP_BBUF_NOT    1854 regparse.c         SWAP_BBUF_NOT(bbuf1, not1, bbuf2, not2);
SWAP_BBUF_NOT    1937 regparse.c         SWAP_BBUF_NOT(bbuf1, not1, bbuf2, not2);