You don't know me or my background; please do not act like you do. I write parsers and compilers for fun, often. https://www.w3.org/TR/css-syntax-3/#parse-rule

You don't know me or my background; please do not act like you do. I write parsers and compilers for fun, often. https://www.w3.org/TR/css-syntax-3/#parse-rule https://www.w3.org/TR/css-syntax-3/#parse-rule Whitespace tokens are skipped, as I suspected. There is no whitespace value. As I mentioned before, the result of what the author describes is the same, but the explanation isn't entirely accurate. It's harmless errata. Perhaps it is /you/ that doesn't know what they're talking about.