Fix: when lurette uses lv6 -2c-exec, it does not uses the embedded Lv6Run plugin anymore

lurette-nocaml/src/lurette.ml

-(* Time-stamp: <modified the 11/04/2019 (at 14:56) by Erwan Jahier> *)
+(* Time-stamp: <modified the 22/05/2019 (at 09:50) by Erwan Jahier> *)
 (* Mimick the behavior of 'rdbg -lurette', but without the dependency
    on ocaml *)
 open Event
@@ -50,16 +50,24 @@ let other_args:string =
 (**********************************************************************************)
 let (gen_reactive_program : string -> RdbgArg.reactive_program) =
   fun str -> 
-  let args = Str.split (Str.regexp "[ \t]+") str in
-  let tool = Filename.basename (List.hd args) in
-  let plugin =
-    match tool with
-    | "lutin"   -> LutinRun.make (Array.of_list args)
-    | "lv6" | "lus2lic" -> Lv6Run.make  (Array.of_list (args@["--expand-io-type"]))
-    | "ocaml" -> OcamlRun.make (List.nth args 1)
-    | _ -> StdioRun.make str
-  in
-  Ocaml(plugin)
+    let args = Str.split (Str.regexp "[ \t]+") str in
+    let tool = Filename.basename (List.hd args) in
+    let plugin =
+      match tool with
+      | "lutin"   -> LutinRun.make (Array.of_list args)
+      | "lv6" | "lus2lic" ->
+        if
+          List.mem "-exec" args ||
+          List.mem "-2c-exec" args ||
+          List.mem "--to-c-execute" args
+        then
+          StdioRun.make str
+        else
+          Lv6Run.make  (Array.of_list (args@["--expand-io-type"]))
+      | "ocaml" -> OcamlRun.make (List.nth args 1)
+      | _ -> StdioRun.make str
+    in
+    Ocaml(plugin)
 
 open RdbgArg    
 let _ =