Issue when subclassing a bound function used as constructor

[Claude Pache]

    let C be some constructor
    let D = C.bind(obj, a, b)

Thanks to the carefully designed `D.[[Construct]]` internal method, the 
following expressions are equivalent:

    new D(...args)
    new C(a, b, ...args)

Consider now:

    class E extends D {
        contructor(...args) {
            super(...args)
        }
    }

As I understand, `super(...args)` calls `D.[[Call]](this, args)`, which in turn 
calls `C.[[Call]](obj, [a, b, ...args])`. But what we probably want here, is  
`C.[[Call]](this, [a, b, ...args])`.

I am missing something or is there an issue?

—Claude


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