Fixed keyboard handling regression.

tests/unit/test_x11_terminal_mode.py

@@ -217,6 +217,47 @@ def test_x11_build_passive_grabs_for_fenrir_keys_and_shortcuts():
     assert ("KEY_BACKSPACE", X.Mod4Mask, True) in grabs
 
 
+@pytest.mark.unit
+@pytest.mark.parametrize(
+    "modifier_mask",
+    [X.ControlMask, X.ShiftMask, X.Mod1Mask],
+)
+def test_x11_poll_modifier_interrupt_keys_interrupts_without_input_events(
+    modifier_mask,
+):
+    x11 = X11Driver()
+    x11.active = True
+    x11.modifier_interrupt_state = 0
+    x11.modifier_state = 0
+    x11.root = Mock()
+    x11.root.query_pointer.return_value = Mock(mask=modifier_mask)
+    settings_manager = Mock()
+    settings_manager.get_setting_as_bool.return_value = True
+    settings_manager.get_setting.return_value = ""
+    output_manager = Mock()
+    x11.env = {
+        "input": {"event_buffer": []},
+        "runtime": {
+            "SettingsManager": settings_manager,
+            "OutputManager": output_manager,
+            "DebugManager": Mock(),
+        },
+    }
+
+    x11.poll_modifier_interrupt_keys()
+
+    output_manager.interrupt_output_async.assert_called_once()
+    assert x11.env["input"]["event_buffer"] == []
+
+    output_manager.interrupt_output_async.reset_mock()
+    x11.root.query_pointer.return_value = Mock(mask=0)
+
+    x11.poll_modifier_interrupt_keys()
+
+    output_manager.interrupt_output_async.assert_not_called()
+    assert x11.env["input"]["event_buffer"] == []
+
+
 @pytest.mark.unit
 def test_x11_optional_modifier_masks_can_exclude_numlock():
     x11 = X11Driver()