I like this syntax better than the new lambda syntax, but I think it's good that a proper lambda syntax exists now. Not all higher-order functions accept formul

I like this syntax better than the new lambda syntax, but I think it's good that a proper lambda syntax exists now. Not all higher-order functions accept formulas (they have to wrap their function arguments with rlang::as_function or equivalent), and there are probably some obscure cases where the distinction between a formula and a function matters.