A pluggable regular expression engine.
val make : string -> tCompiles a regular expression.
val get_substring : substrings -> int -> string optionExtracts a single substring. Returns None if the group did not match.
val get_all_substrings : substrings -> string arrayExtracts all the matched substrings. Includes the full match at index 0. If a subpattern did not capture a substring, the empty string is returned in the corresponding position instead.
val exec : rex:t -> pos:int -> Bytes.t -> substrings optionAttemts to match the byte-buffer with a regular expression, starting from the position pos. Returns the matched substrings or None on failure.