el_wget
ret = el_wget(el, op, &pw);
ret = el_wget(el, op, va_arg(ap, const char **));
ret = el_wget(el, op, va_arg(ap, int *));
ret = el_wget(el, op, va_arg(ap, el_rfunc_t *));
ret = el_wget(el, op, va_arg(ap, void **));
ret = el_wget(el, op, what, fpp);
int el_wget(EditLine *, int, ...);