CH_BREAK_SENDING
if (ch->ch_flags & CH_BREAK_SENDING) {
ch->ch_flags &= ~(CH_BREAK_SENDING);
if ((ch->ch_flags & CH_STOP) || (ch->ch_flags & CH_BREAK_SENDING))
if (!(ch->ch_flags & CH_BREAK_SENDING)) {
ch->ch_flags |= (CH_BREAK_SENDING);
if (!(ch->ch_flags & CH_BREAK_SENDING)) {
ch->ch_flags |= (CH_BREAK_SENDING);
if ((ch->ch_flags & CH_STOP) || (ch->ch_flags & CH_BREAK_SENDING))
if (ch->ch_flags & CH_BREAK_SENDING) {
ch->ch_flags &= ~(CH_BREAK_SENDING);