PANE_EXITED
(wp->flags & PANE_EXITED) &&
wp->flags |= PANE_EXITED;
new_wp->flags &= ~PANE_EXITED;
wp->flags |= PANE_EXITED;
return (wp->fd == -1 || (wp->flags & PANE_EXITED));
if (~wp->flags & PANE_EXITED)
if (wp != NULL && (~wp->flags & PANE_EXITED)) {