Not set itself foreground when it is connected to pipe end. #121
Description
$ stty tostop
$ echo 'sleep 10 ; echo a ' | sush
Stopped Pid: Pid(302840), Signal: SIGTTOU{{ message }}
$ stty tostop
$ echo 'sleep 10 ; echo a ' | sush
Stopped Pid: Pid(302840), Signal: SIGTTOU