TRACE_BITS
#define BEFORE(N) if (USE_TRACEF(TRACE_BITS)) _nc_locked_tracef("%s before bits: %s", N, _nc_tracebits())
#define AFTER(N) if (USE_TRACEF(TRACE_BITS)) _nc_locked_tracef("%s after bits: %s", N, _nc_tracebits())
TR(TRACE_BITS, ("_nc_set_tty_mode(%d): %s",
TR(TRACE_BITS, ("_nc_get_tty_mode(%d): %s",
DATA(TRACE_BITS),
TR(TRACE_BITS, ("\tcheck ->%d\n", check));
TR(TRACE_BITS, ("...try %d:%d", try, count));
TR(TRACE_BITS, ("\twin32 ->%#x, %#x", actual[0], actual[1]));