diff --git a/src/fsm/dispatch.c b/src/fsm/dispatch.c
index a3ad557..3be10c3 100644
--- a/src/fsm/dispatch.c
+++ b/src/fsm/dispatch.c
@@ -66,7 +66,7 @@ void fsm_journal_event (char *message, int priority, int filter)
     //   CRITICAL   ERROR    WARNING   INFO    MESSAGE   DEBUG    SPEW    😄️
     //      0         1         2        3        4        5       6
 
-    if (priority  <=  DEBUG
+    if (priority  == 0 //<=  DEBUG
 
 /*   *   *   *   *   *   *    -    F I L T E R S   -   *   *   *   *   *   *   *
 *        This list is duplicated in both   /fsm.h   and   /fsm/dispatch        *
@@ -99,7 +99,8 @@ void fsm_journal_event (char *message, int priority, int filter)
 *         This list is duplicated in both   /fsm.h   and   /fsm/dispatch       *
 *   *   *   *   *   *   *    -    F I L T E R S   -   *   *   *   *   *   *   */
 
-    && filter == FSM)
+    || filter == 16
+    || filter == 41)
     fsm_journal_push (message);
 }
 #define _CRITICAL___ERROR____WARNING___INFO____MESSAGE___DEBUG ___SPEW____👋️  0
@@ -145,8 +146,7 @@ void  fsm_set_preferences_modified (bool value)
     fsm_journal_event (str1, 4, 90);
 
     fsm_journal_event ("fsm/dispatch      preferences modified   value = ?\n\
-    >  Je ne sais ni concatener les strings  ni utiliser 'itoa'\n\
-    >  et les 'toggle' buttons envoient probablement deux events", 4, 90);
+    >  Je ne sais ni concatener les strings  ni utiliser 'itoa'", 4, 90);
     preferences_have_been_modified = value;
     /*
     if (value) fsm_journal_event (
diff --git a/src/main.c b/src/main.c
index 7a77635..92b227b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -148,7 +148,7 @@ int main (int argc, char **argv)
 
     int status = g_application_run (G_APPLICATION (app), argc, argv);
     g_object_unref (app);
-    fsm_journal_event ("main              g object unref (app)", 3, 0);
+    fsm_journal_event ("main              g_object unref (app)", 3, 0);
 
     fsm_journal_event ("main              That'all folks ! 👋️😄️", 3, 0);
     fsm_journal_publication_request();
@@ -213,3 +213,4 @@ TODO (bottlenecks)
     Des 'runs' de longue durée n'ont de sens qu'une fois ce débuggage effectué.
     Il y a donc peu de problèmes à craindre du fait de la limite de la bande passante.
 */
+
diff --git a/src/signal.c b/src/signal.c
index 3b1efa3..f2d1256 100644
--- a/src/signal.c
+++ b/src/signal.c
@@ -76,7 +76,7 @@ void on_bind_user_tree_factory (GtkSignalListItemFactory *factory,
                                 GObject* object,
                                 gpointer user_data)
 {
-    fsm_journal_event ("signal            bind user tree factory() has began", DEBUG, 23);
+    fsm_journal_event ("signal            bind user tree factory() has began", SPEW, 23);
     GtkListItem *list_item = GTK_LIST_ITEM (object);
     assert (list_item);
 
@@ -96,15 +96,15 @@ void on_bind_user_tree_factory (GtkSignalListItemFactory *factory,
                     row);
     gtk_widget_set_margin_start (expander,
                                gtk_tree_list_row_get_depth(row) * 20);
-    fsm_journal_event ("signal            bind user tree factory() has ended", DEBUG, 23);
+    fsm_journal_event ("signal            bind user tree factory() has ended", SPEW, 23);
 }
 
 void on_setup_user_tree_factory (GtkSignalListItemFactory *factory,
                                  GObject* object, gpointer user_data){
-    fsm_journal_event ("signal            setup user tree factory() has began", DEBUG, 23);
+    fsm_journal_event ("signal            setup user tree factory() has began", SPEW, 23);
     GtkWidget* expander = gtk_expander_new (NULL);
     gtk_list_item_set_child (GTK_LIST_ITEM (object), expander);
-    fsm_journal_event ("signal            setup user tree factory() has ended", DEBUG, 23);
+    fsm_journal_event ("signal            setup user tree factory() has ended", SPEW, 23);
 }
 
 
diff --git a/src/util/tests.c b/src/util/tests.c
index 93ab276..85d16b6 100644
--- a/src/util/tests.c
+++ b/src/util/tests.c
@@ -29,12 +29,28 @@
 
 
 #include "../../include/util.h"
+#include "../../include/base.h"
+
+static const char *util_str_concat_test (char *a, char *b, int len_a, int len_b) {
+    char *c = malloc (len_a + len_b + 2);    // char c[255];   *c = 'K';    c[1] = 'O';    *(c+1) = 'U';    c[2] = '\0';    a[len_a] = '\0';    b[len_b] = '\0';
+    strcpy(c, a);
+    strcpy(c + len_a + 1, b);
+    c[2] = '9'; c[3] = '9';
+    *(c + len_a + len_b) = '\0';
+//    printf ("static void current concat test (%s%s)  >  %s\n", a, b, c);
+    return c;
+}
 
 void util_trigger_test ()
 {
     if (0) util_pile_test();
     if (0) util_double_list_test();
     if (0) util_sorted_list_test();
+    //int len_a = 11, len_b = 14;
+    char aaa [] = "Hello World", bbb [] = ", what's new ?";
+    char *c = strcat (aaa, bbb); //c[11 + 14] = '\0';
+    if (1) printf("%s <--- strcat ()   (would 'like to use: strncat() instead...)\n", c);
+    if (1) printf("%s <--- util_str_concat_test()\n", util_str_concat_test(aaa, bbb, 11, 14));
 }
 
 void util_pile_test()