X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2FmatitaScript.ml;h=711ac975a8482b0b10993aaf87b141150148cdb3;hb=refs%2Fheads%2Fmaster;hp=2401221344c43de37f287d89afbd0f8156128065;hpb=e082eec771e24842f29a01fa258f7c80bc2db599;p=helm.git

diff --git a/matita/matita/matitaScript.ml b/matita/matita/matitaScript.ml
index 240122134..711ac975a 100644
--- a/matita/matita/matitaScript.ml
+++ b/matita/matita/matitaScript.ml
@@ -773,7 +773,8 @@ object (self)
       | n (* when n < 0 *) -> current_mark_pos#backward_chars (abs n)
     in
     buffer#move_mark mark ~where:new_mark_pos;
-    buffer#apply_tag locked_tag ~start:buffer#start_iter ~stop:new_mark_pos;
+    (* CSC: the next line is required to avoid race conditions (deadlocks) *)
+    GtkThread.sync(fun () -> buffer#apply_tag locked_tag ~start:buffer#start_iter ~stop:new_mark_pos) ();
     buffer#move_mark `INSERT old_insert;
     let mark_position = buffer#get_iter_at_mark mark in
     if source_view#move_mark_onscreen mark then