https://github.com/DougGregor/swift-evolution/blob/function-body-macros/proposals/nnnn-function-body-macros.md#type-checking-of-functions-involving-function-body-macros ↑これに議論が書いてある (edited)

swift-evolution/proposals/nnnn-function-body-macros.md at function-...

This maintains proposals for changes and user-visible enhancements to the Swift Programming Language. - DougGregor/swift-evolution