ERR_MSG_LEN
int nleft = ERR_MSG_LEN - msglen;
char msg[ERR_MSG_LEN+1]; /* An error message */
_err_get_msg(home->err), ERR_MSG_LEN);
_err_get_msg(home->err), ERR_MSG_LEN);
_err_get_msg(home->err), ERR_MSG_LEN);
waserr = callback_fn(data, "+", pwd, _err_get_msg(home->err),ERR_MSG_LEN);