[Gretl-devel] Re: slight convenience extension to funcerr()

Am 17.03.2020 um 21:49 schrieb Allin Cottrell: > On Mon, 16 Mar 2020, Sven Schreiber wrote: >> >> That's exactly what I was thinking, too. OTOH funcerr() was introduced >> less than 3 months ago (not counting the pre-release phase), so maybe it >> wouldn't be too bad to break compatibility here? (After a thorough check >> of the packages, of course.) > > The signature of funcerr() is now revised: > > first arg: boolean condition (non-zero means error) > second arg: error message string > > Among the current function packages, only Artur's assertion.gfn uses the > prior form (with a single string argument). That form is still accepted > for now; to trigger the new form you must supply two arguments. Excellent, thanks! If the single-argument form is supposed to go away some day, then I'd suggest to make the first argument optional, defaulting to True. (Not sure right now whether for built-in functions we can write just a comma to leave that arg out, like we can with user-defined functions that have defaults.)