1 files changed, 29 insertions, 0 deletions
diff --git a/lib/cString.mli b/lib/cString.mli
index 1d33cef39b..9f4a47f19d 100644
--- a/lib/cString.mli
+++ b/lib/cString.mli
@@ -47,17 +47,46 @@ end
 module type ExtS =
 sig
   include S
+  (** We include the standard library *)
+
   external equal : string -> string -> bool = "caml_string_equal" "noalloc"
+  (** Equality on strings *)
+
+  val is_empty : string -> bool
+  (** Test whether a string is empty. *)
+
   val explode : string -> string list
+  (** [explode "x1...xn"] returns [["x1"; ...; "xn"]] *)
+
   val implode : string list -> string
+  (** [implode [s1; ...; sn]] returns [s1 ^ ... ^ sn] *)
+
   val strip : string -> string
+  (** Remove the surrounding blank characters from a string *)
+
   val map : (char -> char) -> string -> string
+  (** Apply a function on a string character-wise. *)
+
   val drop_simple_quotes : string -> string
+  (** Remove the eventual first surrounding simple quotes of a string. *)
+
   val string_index_from : string -> int -> string -> int
+  (** As [index_from], but takes a string instead of a char as pattern argument *)
+
   val string_contains : where:string -> what:string -> bool
+  (** As [contains], but takes a string instead of a char as pattern argument *)
+
   val plural : int -> string -> string
+  (** [plural n s] adds a optional 's' to the [s] when [2 <= n]. *)
+
   val ordinal : int -> string
+  (** Generate the ordinal number in English. *)
+
   val split : char -> string -> string list
+  (** [split c s] splits [s] into sequences separated by [c], excluded. *)
+
+  val is_sub : string -> string -> int -> bool
+  (** [is_sub p s off] tests whether [s] contains [p] at offset [off]. *)
 end
 
 include ExtS