This is a red herring. Context-free grammar tools don't solve the problem of keeping a language from ever being confusing. However they do solve the problem o

This is a red herring. Context-free grammar tools don't solve the problem of keeping a language from ever being confusing. However they do solve the problem of allowing literal ambiguity into your language. Ambiguity is strictly worse than confusion. Ambiguity means you have to communicate more information to your users: when two parses are both syntactically valid, which one does the language actually choose?