...

diff --git a/helm/software/matita/matitaGui.ml b/helm/software/matita/matitaGui.ml
index 72e0c9bfc7b14806082331ecd6a06a5018a3dc63..62c15acad20db2c3cda302f869e36eacdeabb1a9 100644 (file)
--- a/helm/software/matita/matitaGui.ml
+++ b/helm/software/matita/matitaGui.ml
@@ -729,7 +729,7 @@ class gui () =
               MultiPassDisambiguator.use_library := saved_use_library;
               unlock_world ()
            | exc ->
               MultiPassDisambiguator.use_library := saved_use_library;
               unlock_world ()
            | exc ->

-              notify_exn exc;
+              (try notify_exn exc with Sys.Break as e -> notify_exn e);

               unlock_world ()
        in
        (*thread_main ();*)
               unlock_world ()
        in
        (*thread_main ();*)