That's more specialized: it can express foo(42, ?) but not what you'd write within this pipe syntax as foo(42, ^) + 1 The tradeoff is that it doesn'

That's more specialized: it can express foo(42, ?) but not what you'd write within this pipe syntax as foo(42, ^) + 1 The tradeoff is that it doesn't need some extra delimiter since the function call is what delimits it. Perhaps that's a better tradeoff, I'm not sure; but for sure we shouldn't have both.