return 1;
static int sftp_cmd_open(struct sftp_command *cmd){    if (back != NULL) {	printf("psftp: already connected\n");	return 0;    }    if (cmd->nwords < 2) {	printf("open: expects a host name\n");	return 0;    }    if (psftp_connect(cmd->words[1], NULL, 0)) {	back = NULL;		       /* connection is already closed */	return -1;		       /* this is fatal */    }    do_sftp_init();}