The compiler cares because they want to enforce this standard (and it may make the parser slightly simpler). That there is a mix, or at least a non-obvious brea

The compiler cares because they want to enforce this standard (and it may make the parser slightly simpler). That there is a mix, or at least a non-obvious break between what the compiler enforces and what the formatter will accept and produce is an inconsistency in go, I suppose, but not necessarily worse than arbitrary decisions made in other languages.