JF_SAVEDTTYPGRP
j->flags |= JF_SAVEDTTYPGRP;
tcsetpgrp(tty_fd, (j->flags & JF_SAVEDTTYPGRP) ?
(int) ((j->flags & JF_SAVEDTTYPGRP) ?
j->flags &= ~(JF_SAVEDTTY | JF_SAVEDTTYPGRP);