def __init__(self, argv=None):
if notSupported:
raise notSupported
if argv is not None:
self._argv = argv
if self._argv is _marker:
self._get_login_shell()
(pid, fd) = pty.fork()
if pid == 0:
self._spawn()
self._ptyfd = fd
self._ptypid = pid
self._new_text = None
fcntl.fcntl(self._ptyfd, fcntl.F_SETFL, os.O_NDELAY)
self._termProcess = True
Buffer.__init__(self, name=self._argv[0], text='')
