fixed bug in keeping error state (since error does not return), added…

… it to test script

test/test_notification.m

@@ -9,7 +9,26 @@
 sublevel(@ft_info)
 sublevel(@ft_notice)
 sublevel(@ft_warning)
-% sublevel(@ft_error)
+% sublevel(@ft_error) % this one cannot be tested the same way
+
+try
+  ft_error('off'); % this should not make a difference
+  ft_error('something');
+  ok = false;
+catch
+  me = ft_error('last');
+  assert(strcmp(me.message, 'something'))
+  assert(strcmp(me.identifier, 'FieldTrip:test_notification'))
+  ok = true;
+end
+
+if ~ok
+  error('ft_error failed');
+else
+  fprintf('========================================\n')
+  fprintf('ft_error looks good\n');
+  fprintf('========================================\n')
+end
 
 function sublevel(notice)
 

utilities/private/ft_notification.m

@@ -263,7 +263,9 @@
     if strcmp(msgState, 'on')
 
       if strcmp(level, 'error')
-        % this is fully handled by the ERROR function
+        % update the global variable
+        ft_default.notification.(level) = s;
+        % the remainder is fully handled by the ERROR function
         error(msgId, varargin{:});
 
       elseif strcmp(level, 'warning')