Well that's the point isn't it. I don't have to care about the second system's grammar, as long as it accepts at least valid JSON, since that's all I ever inten

Well that's the point isn't it. I don't have to care about the second system's grammar, as long as it accepts at least valid JSON, since that's all I ever intend on emitting. Meanwhile, anyone who would like to check whether e.g. a `// comment \n` statement will be accepted by my parser is invited to check the grammar, which will make all such questions perfectly clear.