Hi function writers, there's a slight problem with the bcheck() function, see this example: <hansl> function void bcheckcheck (bundle b[null])     bundle targ = _()     eval bcheck(&targ, b) # error: 2nd arg is empty end function bcheckcheck() </hansl> The point is that the main purpose of bcheck is to handle a bundle with options supplied by the user (here: "b"). So if the user is happy with the defaults and doesn't supply such a bundle, I'd argue that bcheck should simply accept that and do nothing. I'm aware that the pass-through of a null value for the function argument b is recent (gretl 2023b, AFAIK); so I guess that bcheck() simply has to be adjusted to the new situation. thanks sven