Fixed multiline edit box weirdness.

tests/test_input_event_manager_x11_focus_regressions.py

@@ -690,6 +690,43 @@ class InputEventManagerX11FocusRegressionTests(unittest.TestCase):
         restore.assert_called_once_with()
         suspend.assert_not_called()
 
+    def test_xterm_focus_poll_survives_transient_matcher_failure(self):
+        manager = input_event_manager.InputEventManager()
+        manager._device = object()
+        manager._xtermRecoverySourceId = 23
+
+        with (
+            mock.patch.object(
+                manager,
+                "_active_x11_window_xterm_match",
+                side_effect=RuntimeError("transient matcher failure"),
+            ),
+            mock.patch.object(input_event_manager.debug, "print_message") as printMessage,
+        ):
+            result = manager._poll_xterm_grab_recovery()
+
+        self.assertTrue(result)
+        self.assertEqual(manager._xtermRecoverySourceId, 23)
+        printMessage.assert_called_once()
+
+    def test_ewmh_read_failure_reconnects_on_next_check(self):
+        manager = input_event_manager.InputEventManager()
+        x11Display = mock.Mock()
+        x11Root = mock.Mock()
+        x11Root.get_full_property.side_effect = RuntimeError("display connection failed")
+        manager._x11Display = x11Display
+        manager._x11Root = x11Root
+        manager._netActiveWindowAtom = object()
+        manager._x11AnyPropertyType = object()
+        manager._didAttemptX11Display = True
+
+        with mock.patch.object(input_event_manager.debug, "print_message"):
+            result = manager._get_ewmh_active_x11_window_id()
+
+        self.assertIsNone(result)
+        x11Display.close.assert_called_once_with()
+        self.assertFalse(manager._didAttemptX11Display)
+
     def test_xterm_suppression_does_not_check_x11_without_active_handoff(self):
         manager = input_event_manager.InputEventManager()