Re: [vim9script] Default value for object argument?

> How do you define a default value for a function argument whose type is
> a class? I have tried this:
>
> vim9script
>
> class X
> endclass
>
> def F(x: X = null_object)
> enddef
>
> F()
>
> But this results in:
>
> E1013: Argument 1: type mismatch, expected object<X> but got object<Unknown>
>
> Maybe this is not supported yet?

The type system isn't fully worked out yet. This works, but it's not
ideal:

var def: X
def F(x: X = def)
enddef

I'm not sure what syntax we should use for "null object of class X"?

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