Le lun. 30 nov. 2020 à 12:29, Vasilij Schneidermann <xxxxxx@vasilij.de> a écrit :
>
> Hello again,
>
> > I think when an immutable object is exported from a library, it must
> > be done as a procedure like eof-object.
> > So in this case, the procedure `engine-null` seems to do the job?
>
> I've looked at this now and discovered that it must be a procedure as
> the null value is unique to the engine and should ideally have a
> (engine-null engine) function signature. However that would mean
> extending the engine record accordingly and adjusting the documentation
> in a few more places. Is that acceptable for you?

Yes.

--
Amirouche ~ https://hyper.dev