src/Pure/Isar/toplevel.ML

   (case
       (case init_of tr of
         SOME name => Exn.capture (fn () => Thy_Load.check_name thy_name name) ()
       | NONE => Exn.Result ()) of
     Exn.Result () =>
-      (case transition false tr st of
+      (case transition (is_some (init_of tr)) tr st of
         SOME (st', NONE) => (status tr Markup.finished; async_state tr st'; SOME st')
       | SOME (_, SOME (exn as Exn.Interrupt, _)) => reraise exn
       | SOME (_, SOME exn_info) => (error_msg tr exn_info; status tr Markup.failed; NONE)
       | NONE => (error_msg tr (TERMINATE, at_command tr); status tr Markup.failed; NONE))
   | Exn.Exn exn => (error_msg tr (exn, at_command tr); status tr Markup.failed; NONE));