All these characters are allowed in a pchar from a tokenizer perspective. Semantic validation may need to ensure that % is always followed by 2 hex digits.

isPercentEncodedLikeCharacter

open fun isPercentEncodedLikeCharacter(char: Char): Boolean

All these characters are allowed in a pct-encoded char from a tokenizer perspective. Semantic validation may need to ensure that % is always followed by 2 hex digits.

isReserved

open fun isReserved(char: Char): Boolean

isSubcomponentDelimiter

open fun isSubcomponentDelimiter(char: Char): Boolean

isUnreserved

open fun isUnreserved(char: Char): Boolean

unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"