The Racket repository
f3eb315425
instantiating dotted pre-types where the bound is _not_ free in the
pre-type base. I checked in a test case for this, that's something like:
(inst (plambda: (a ...) [ys : (Number ... a -> Number)] (apply + ys))
Integer Boolean String)
=
(Number Number Number -> Number)
These changes introduce no extra test failures, and we really have to
account for the bound here, and really even if the variable _does_
appear free within the pre-type base, it shouldn't be counted as a
"regular" variable outside of that scope.
Actually, maybe Dotted should behave like Constant, where it just
propogates until there's a separate free use that we're merging with,
in which case we just treat it like the free use (which will
eventually get fix-bound applied to it anyway). I think I'll make
that change next.
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