Revert "Fix calling Coq from the ide."

This reverts commit 3e91bbc5.

src/driver/call_provers.ml

@@ -423,12 +423,8 @@ let query_result_buffer id =
       Hashtbl.remove result_buffer id; r
   with Not_found -> NoUpdates
 
-(* The editor result is returned as Valid but the editor result is also always
-   made obsolete. We put Valid here so that it is possible to replay the proof
-   to get a non obsolete valid proof.
-*)
 let editor_result ret = {
-  pr_answer = Valid;
+  pr_answer = Unknown ("", None);
   pr_status = ret;
   pr_output = "";
   pr_time   = 0.0;

src/session/controller_itp.ml

@@ -433,18 +433,15 @@ let timeout_handler () =
     let q = Queue.create () in
     while not (Queue.is_empty prover_tasks_edited) do
       (* call is an EditorCall *)
-      let (callback,call,_ores) as c =
+      let (callback,call,ores) as c =
         Queue.pop prover_tasks_edited in
       let prover_update = Call_provers.query_call call in
       match prover_update with
       | Call_provers.NoUpdates -> Queue.add c q
-      | Call_provers.ProverFinished res ->
-          (* For editor event, the result is always obsolete and valid which
-             means that the proof need to be replayed to be completely checked.
-             Replay only replays valid goals so there would be no way to make an
-             interactive proof and then check it otherwise.
-          *)
-          callback (Done res)
+      | Call_provers.ProverFinished _res ->
+          (* res is meaningless for edition, we returned the old result *)
+          (* inform the callback *)
+          callback (match ores with None -> Undone | Some r -> Done r)
       | _ -> assert (false) (* An edition can only return Noupdates or finished *)
     done;
     Queue.transfer q prover_tasks_edited;