PF_PKT
if (pty->pt_flags & (PF_PKT|PF_UCNTL) && pty->pt_send) {
if (((pty->pt_flags & (PF_PKT|PF_UCNTL)) && pty->pt_send) ||
while (pty->pt_flags&(PF_PKT|PF_UCNTL) && pty->pt_send) {
if (pty->pt_flags & (PF_PKT|PF_UCNTL|PF_43UCNTL)) {
pty->pt_flags |= PF_PKT;
pty->pt_flags &= ~PF_PKT;
if (pty->pt_flags & (PF_PKT|PF_UCNTL)) {
if (pty->pt_flags & PF_PKT) {
if (pty->pt_flags&(PF_PKT|PF_UCNTL) && pty->pt_send)