Restore better printing in Base by reverting ocaml/ocaml#11515

ocaml/testsuite/tests/generalized-open/gpr1506.ml

@@ -12,7 +12,7 @@ module M = struct
     type t = B of t * t' | C
 end
 [%%expect{|
-module M : sig type t = B of t * t/2 | C end
+module M : sig type t = B of t/1 * t/2 | C end
 |}]
 
 (* test *)

ocaml/testsuite/tests/shadow_include/cannot_shadow_error.compilers.reference

@@ -1,7 +1,7 @@
 File "cannot_shadow_error.ml", line 24, characters 2-36:
 24 |   include Comparable with type t = t
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-Error: Illegal shadowing of included type t/2 by t.
+Error: Illegal shadowing of included type t/2 by t/1.
 File "cannot_shadow_error.ml", line 23, characters 2-19:
 23 |   include Printable
        ^^^^^^^^^^^^^^^^^

ocaml/testsuite/tests/shadow_include/shadow_all.ml

@@ -100,7 +100,7 @@ end
 Line 4, characters 2-11:
 4 |   include S
       ^^^^^^^^^
-Error: Illegal shadowing of included type t/2 by t.
+Error: Illegal shadowing of included type t/2 by t/1.
 Line 2, characters 2-11:
 2 |   include S
       ^^^^^^^^^
@@ -144,7 +144,7 @@ end
 Line 4, characters 2-11:
 4 |   include S
       ^^^^^^^^^
-Error: Illegal shadowing of included module M/2 by M.
+Error: Illegal shadowing of included module M/2 by M/1.
 Line 2, characters 2-11:
 2 |   include S
       ^^^^^^^^^
@@ -189,7 +189,7 @@ end
 Line 4, characters 2-11:
 4 |   include S
       ^^^^^^^^^
-Error: Illegal shadowing of included module type T/2 by T.
+Error: Illegal shadowing of included module type T/2 by T/1.
 Line 2, characters 2-11:
 2 |   include S
       ^^^^^^^^^
@@ -210,7 +210,7 @@ end
 Line 4, characters 2-11:
 4 |   include S
       ^^^^^^^^^
-Error: Illegal shadowing of included type ext/2 by ext.
+Error: Illegal shadowing of included type ext/2 by ext/1.
 Line 2, characters 2-11:
 2 |   include S
       ^^^^^^^^^
@@ -506,15 +506,15 @@ end
 Line 8, characters 2-8:
 8 |   type t
       ^^^^^^
-Error: Illegal shadowing of included type t/4 by t.
+Error: Illegal shadowing of included type t/2 by t/1.
 Lines 2-5, characters 2-5:
 2 | ..include struct
 3 |     type t = A
 4 |     let x = A
 5 |   end
-  Type t/4 came from this include.
+  Type t/2 came from this include.
 Line 4, characters 8-9:
 4 |     let x = A
             ^
-  The value x has no valid type if t/4 is shadowed.
+  The value x has no valid type if t/2 is shadowed.
 |}]

ocaml/testsuite/tests/tool-toplevel/redefinition_hints.compilers.reference

@@ -14,7 +14,7 @@ val y : (u * v * (module S)) M.t = M.X (A, B, <module>)
 Line 2, characters 4-5:
 2 | x = y;;
         ^
-Error: This expression has type (u * v * (module S)) M.t
+Error: This expression has type (u/1 * v/1 * (module S/1)) M/1.t
        but an expression was expected of type
          (u/2 * v/2 * (module S/2)) M/2.t
        Hint: The types v and u have been defined multiple times in this
@@ -43,14 +43,16 @@ Error: This expression has type a/2 but an expression was expected of type
 Line 1, characters 4-5:
 1 | a = c;;
         ^
-Error: This expression has type a but an expression was expected of type a/3
+Error: This expression has type a/1 but an expression was expected of type
+         a/2
        Hint: The type a has been defined multiple times in this toplevel
          session. Some toplevel values still refer to old versions of this
          type. Did you try to redefine them?
 Line 1, characters 4-5:
 1 | b = c;;
         ^
-Error: This expression has type a but an expression was expected of type a/2
+Error: This expression has type a/1 but an expression was expected of type
+         a/2
        Hint: The type a has been defined multiple times in this toplevel
          session. Some toplevel values still refer to old versions of this
          type. Did you try to redefine them?

ocaml/testsuite/tests/typing-extension-constructor/test.ocaml.reference

@@ -6,8 +6,6 @@ module M : sig type extension_constructor = int end
 Line 2, characters 1-27:
 2 | ([%extension_constructor A] : extension_constructor);;
      ^^^^^^^^^^^^^^^^^^^^^^^^^^
-Error: This expression has type extension_constructor/2
+Error: This expression has type extension_constructor
        but an expression was expected of type M.extension_constructor = int
-       File "_none_", line 1:
-         Definition of type extension_constructor/2
 

ocaml/testsuite/tests/typing-misc/pr6416.ml

@@ -23,13 +23,13 @@ Error: Signature mismatch:
        is not included in
          sig val f : t -> unit end
        Values do not match:
-         val f : t -> unit
+         val f : t/1 -> unit
        is not included in
          val f : t/2 -> unit
-       The type t -> unit is not compatible with the type t/2 -> unit
-       Type t is not compatible with type t/2
+       The type t/1 -> unit is not compatible with the type t/2 -> unit
+       Type t/1 is not compatible with type t/2
        Line 6, characters 4-14:
-         Definition of type t
+         Definition of type t/1
        Line 2, characters 2-12:
          Definition of type t/2
 |}]
@@ -49,16 +49,16 @@ Error: Signature mismatch:
        is not included in
          sig type u = A of t end
        Type declarations do not match:
-         type u = A of t
+         type u = A of t/1
        is not included in
          type u = A of t/2
        Constructors do not match:
-         A of t
+         A of t/1
        is not the same as:
-         A of t
-       The type t is not equal to the type t/2
+         A of t/2
+       The type t/1 is not equal to the type t/2
        Line 4, characters 9-19:
-         Definition of type t
+         Definition of type t/1
        Line 2, characters 2-11:
          Definition of type t/2
 |}]
@@ -85,15 +85,15 @@ Error: Signature mismatch:
          sig module A : functor (X : s) -> sig end end
        In module A:
        Modules do not match:
-         functor (X : s) -> ...
+         functor (X : s/1) -> ...
        is not included in
          functor (X : s/2) -> ...
        Module types do not match:
-         s
+         s/1
        does not include
          s/2
        Line 5, characters 6-19:
-         Definition of module type s
+         Definition of module type s/1
        Line 2, characters 2-15:
          Definition of module type s/2
 |}]
@@ -118,16 +118,16 @@ Error: Signature mismatch:
        is not included in
          sig type t = A of T.t end
        Type declarations do not match:
-         type t = A of T.t
+         type t = A of T/1.t
        is not included in
          type t = A of T/2.t
        Constructors do not match:
-         A of T.t
+         A of T/1.t
        is not the same as:
-         A of T.t
-       The type T.t is not equal to the type T/2.t
+         A of T/2.t
+       The type T/1.t is not equal to the type T/2.t
        Line 5, characters 6-34:
-         Definition of module T
+         Definition of module T/1
        Line 2, characters 2-30:
          Definition of module T/2
 |}]
@@ -145,22 +145,22 @@ Line 5, characters 2-62:
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 Error: Signature mismatch:
        Modules do not match:
-         sig module type s type t = B val f : (module s) -> t/2 -> t end
+         sig module type s type t = B val f : (module s) -> t/2 -> t/1 end
        is not included in
          sig val f : (module s) -> t -> t end
        Values do not match:
-         val f : (module s) -> t/2 -> t
+         val f : (module s/1) -> t/2 -> t/1
        is not included in
          val f : (module s/2) -> t/2 -> t/2
-       The type (module s) -> t/2 -> t is not compatible with the type
+       The type (module s/1) -> t/2 -> t/1 is not compatible with the type
          (module s/2) -> t/2 -> t/2
-       Type (module s) is not compatible with type (module s/2)
+       Type (module s/1) is not compatible with type (module s/2)
        Line 5, characters 23-33:
-         Definition of type t
+         Definition of type t/1
        Line 3, characters 2-12:
          Definition of type t/2
        Line 5, characters 9-22:
-         Definition of module type s
+         Definition of module type s/1
        Line 2, characters 2-15:
          Definition of module type s/2
 |}]
@@ -178,18 +178,18 @@ Line 5, characters 5-41:
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 Error: Signature mismatch:
        Modules do not match:
-         sig type a = B val f : a/2 -> 'a -> a end
+         sig type a = B val f : a/2 -> 'a -> a/1 end
        is not included in
          sig val f : a -> (module a) -> a end
        Values do not match:
-         val f : a/2 -> 'a -> a
+         val f : a/2 -> 'a -> a/1
        is not included in
          val f : a/2 -> (module a) -> a/2
-       The type a/2 -> (module a) -> a is not compatible with the type
+       The type a/2 -> (module a) -> a/1 is not compatible with the type
          a/2 -> (module a) -> a/2
-       Type a is not compatible with type a/2
+       Type a/1 is not compatible with type a/2
        Line 5, characters 12-22:
-         Definition of type a
+         Definition of type a/1
        Line 3, characters 2-12:
          Definition of type a/2
 |}]
@@ -222,7 +222,7 @@ Error: Signature mismatch:
        The public method c cannot be hidden
        The first class type has no method m
        Line 5, characters 4-74:
-         Definition of class type a
+         Definition of class type a/1
        Line 2, characters 2-36:
          Definition of class type a/2
 |}]
@@ -248,12 +248,12 @@ Error: Signature mismatch:
        is not included in
          sig class type b = a end
        Class type declarations do not match:
-         class type b = a
+         class type b = a/1
        does not match
          class type b = a/2
        The first class type has no method m
        Line 5, characters 4-29:
-         Definition of class type a
+         Definition of class type a/1
        Line 2, characters 2-42:
          Definition of class type a/2
 |}]
@@ -315,11 +315,11 @@ Error: Signature mismatch:
        Class type declarations do not match:
          class type c = object method m : t/2 end
        does not match
-         class type c = object method m : t end
-       The method m has type t/2 but is expected to have type t
-       Type t/2 is not equal to type t = K.t
+         class type c = object method m : t/1 end
+       The method m has type t/2 but is expected to have type t/1
+       Type t/2 is not equal to type t/1 = K.t
        Line 12, characters 4-10:
-         Definition of type t
+         Definition of type t/1
        Line 9, characters 2-8:
          Definition of type t/2
 |}]
@@ -338,12 +338,12 @@ Error: Signature mismatch:
        is not included in
          sig type t type a = M.t end
        Type declarations do not match:
-         type a = M.t
+         type a = M/1.t
        is not included in
          type a = M/2.t
-       The type M.t = M/2.M.t is not equal to the type M/2.t
+       The type M/1.t = M/2.M.t is not equal to the type M/2.t
        Line 2, characters 14-42:
-         Definition of module M
+         Definition of module M/1
        File "_none_", line 1:
          Definition of module M/2
 |}]
@@ -368,23 +368,23 @@ Lines 5-7, characters 44-3:
 7 | end..
 Error: Signature mismatch:
        Modules do not match:
-         sig val f : t/4 -> t/3 -> t/2 -> t end
+         sig val f : t/2 -> t/3 -> t/4 -> t/1 end
        is not included in
          sig val f : t -> t -> t -> t end
        Values do not match:
-         val f : t/4 -> t/3 -> t/2 -> t
+         val f : t/2 -> t/3 -> t/4 -> t/1
        is not included in
-         val f : t -> t -> t -> t
-       The type t/4 -> t/3 -> t/2 -> t is not compatible with the type
-         t -> t -> t -> t
-       Type t/4 is not compatible with type t
+         val f : t/1 -> t/1 -> t/1 -> t/1
+       The type t/2 -> t/3 -> t/4 -> t/1 is not compatible with the type
+         t/1 -> t/1 -> t/1 -> t/1
+       Type t/2 is not compatible with type t/1
        Line 4, characters 0-10:
-         Definition of type t
-       Line 3, characters 0-10:
+         Definition of type t/1
+       Line 1, characters 0-10:
          Definition of type t/2
        Line 2, characters 0-10:
          Definition of type t/3
-       Line 1, characters 0-10:
+       Line 3, characters 0-10:
          Definition of type t/4
 |}]
 

ocaml/testsuite/tests/typing-misc/pr6634.ml

@@ -18,16 +18,16 @@ Error: Signature mismatch:
        Modules do not match:
          sig type t = [ `T of t ] end
        is not included in
-         sig type t = [ `T of t/2 ] end
+         sig type t = [ `T of t ] end
        Type declarations do not match:
-         type t = [ `T of t ]
+         type t = [ `T of t/2 ]
        is not included in
-         type t = [ `T of t/3 ]
-       The type [ `T of t ] is not equal to the type [ `T of t/2 ]
-       Type t = [ `T of t ] is not equal to type t/2 = int
+         type t = [ `T of t/1 ]
+       The type [ `T of t/1 ] is not equal to the type [ `T of t/2 ]
+       Type t/1 = [ `T of t/1 ] is not equal to type t/2 = int
        Types for tag `T are incompatible
        Line 4, characters 2-20:
-         Definition of type t
+         Definition of type t/1
        Line 1, characters 0-12:
          Definition of type t/2
 |}]