You can use any syntax for the lexems if you are willing to write the code. "[]" is not really "quoting". It's just the lexical syntax for the string datatype I

You can use any syntax for the lexems if you are willing to write the code. "[]" is not really "quoting". It's just the lexical syntax for the string datatype I use, and for consistency it's required even for strings that have no spaces or special characters. And lines starting with "%" hold enforced (even required) schema structure. Yes, I decided to require a single " " as delimiter, and that is not so easy to change with the current approach.