Re_pcre

`sig type regexp = Re.re type flag = [ `ANCHORED | `CASELESS | `MULTILINE ] type substrings = Re.substrings type split_result = Text of string | Delim of string | Group of int * string | NoGroup val re : ?flags:Re_pcre.flag list -> string -> Re.t val regexp : ?flags:Re_pcre.flag list -> string -> Re_pcre.regexp val extract : rex:Re_pcre.regexp -> string -> string array val exec : rex:Re_pcre.regexp -> ?pos:int -> string -> Re_pcre.substrings val get_substring : Re_pcre.substrings -> int -> string val get_substring_ofs : Re_pcre.substrings -> int -> int * int val pmatch : rex:Re_pcre.regexp -> string -> bool val substitute : rex:Re.re -> subst:(string -> string) -> string -> string val full_split : ?max:int -> rex:Re_pcre.regexp -> string -> Re_pcre.split_result list val split : rex:Re_pcre.regexp -> string -> string list val quote : string -> string end`