Undo the ;; deprecation

CHANGES.md

@@ -22,6 +22,10 @@
 
 #### Removed
 
+- Removed warning about missing semicolons added in MDX 1.11.0 and the
+  automatic insertion of semicolons in the corrected files introduced in MDX
+  2.0.0. (#398, @Leonidas-from-XIV)
+
 #### Security
 
 ### 2.1.0

lib/deprecated.ml

@@ -23,33 +23,3 @@ let warn ?replacement s ~since =
   Format.eprintf
     "Warning: %s is deprecated since %s and will be removed in 2.0.0. %s\n%!" s
     since replacement
-
-module Missing_double_semicolon = struct
-  let missing_semicolon = ref false
-
-  let ends_with_semi cmd =
-    cmd |> Astring.String.trim |> Astring.String.is_suffix ~affix:";;"
-
-  let fix_toplevel : Toplevel.t -> Toplevel.t =
-   fun toplevel ->
-    let rec fix_command = function
-      | [] -> []
-      | [ cmd ] when not @@ ends_with_semi cmd ->
-          missing_semicolon := true;
-          [ Printf.sprintf "%s;;" cmd ]
-      | [ cmd ] -> [ cmd ]
-      | x :: xs -> x :: fix_command xs
-    in
-    { toplevel with command = fix_command toplevel.command }
-
-  let fix block = List.map fix_toplevel block
-
-  let report ~filename =
-    if !missing_semicolon then
-      Format.eprintf
-        "Warning: OCaml toplevel block without trailing ;; detected in file \
-         '%s'.\n\
-         Non-semicolon terminated phrases are deprecated.\n\
-         In MDX 3.0 support for toplevel blocks without ;; will be removed.\n"
-        filename
-end

lib/deprecated.mli

@@ -16,8 +16,3 @@
 
 val warn : ?replacement:string -> string -> since:string -> unit
 (** Emits a warning on the standard error. *)
-
-module Missing_double_semicolon : sig
-  val fix : Toplevel.t list -> Toplevel.t list
-  val report : filename:string -> unit
-end

lib/test/mdx_test.ml

@@ -323,7 +323,6 @@ let run_exn ~non_deterministic ~silent_eval ~record_backtrace ~syntax ~silent
             let syntax = Util.Option.value syntax ~default:Normal in
             Toplevel.of_lines ~syntax ~loc:t.loc t.contents
           in
-          let phrases = Deprecated.Missing_double_semicolon.fix phrases in
           with_non_det non_deterministic non_det ~command:print_block
             ~output:(fun () ->
               assert (syntax <> Some Cram);
@@ -367,7 +366,6 @@ let run_exn ~non_deterministic ~silent_eval ~record_backtrace ~syntax ~silent
             try test_block ~ppf ~temp_file t
             with Failure msg -> raise (Test_block_failure (t, msg))))
       items;
-    Deprecated.Missing_double_semicolon.report ~filename:file;
     Format.pp_print_flush ppf ();
     Buffer.contents buf
   in

test/bin/mdx-test/misc/inserting-double-semicolon/test-case.expected

@@ -1,14 +1,11 @@
 `;;` is not mandatory at the end of toplevel phrases but will be inserted
-automatically in the corrected file. Also, a warning will be emitted.
+automatically.
 
 ```ocaml
-# let x = 3;;
+# let x = 3
 val x : int = 3
 # let f = function
   | 0 -> 1
-  | n -> n-1;;
+  | n -> n-1
 val f : int -> int = <fun>
 ```
-Warning: OCaml toplevel block without trailing ;; detected in file 'test-case.md'.
-Non-semicolon terminated phrases are deprecated.
-In MDX 3.0 support for toplevel blocks without ;; will be removed.

test/bin/mdx-test/misc/inserting-double-semicolon/test-case.md

@@ -1,5 +1,5 @@
 `;;` is not mandatory at the end of toplevel phrases but will be inserted
-automatically in the corrected file. Also, a warning will be emitted.
+automatically.
 
 ```ocaml
 # let x = 3