Comment by zzo38computer

I think it would be better to require quotation marks around all string values, in order to avoid this kind of problems. (It is not the only problem with YAML, but it is my opinion of how any format with multiple types should require explicitly mentioning if it is a string type, but YAML (and some other formats) doesn't.) (If keys are required to strings, then it can be reasonable to allow keys to be unquoted if the set of characters that unquoted keys can contain is restricted (and disallowing unquoted empty strings as keys).)