Tests updated. Attempt to fix remaining problems with forward keypress and numlock reporting.

src/fenrirscreenreader/commands/onKeyInput/80500-numlock.py

@@ -28,15 +28,21 @@ class command:
         # Only announce numlock changes if an actual numlock key was pressed
         # AND the LED state actually changed (some numpads send spurious NUMLOCK events)
         current_input = self.env["input"]["curr_input"]
+        previous_input = self.env["input"]["prev_input"]
+        relevant_input = current_input or previous_input
 
         # Check if this is a genuine numlock key press by verifying:
         # 1. KEY_NUMLOCK is in the current input sequence
         # 2. The LED state has actually changed
         # 3. This isn't just a side effect from a KP_ key (which some buggy numpads do)
         is_genuine_numlock = (
-            current_input and
-            "KEY_NUMLOCK" in current_input and
-            not any(key.startswith("KEY_KP") for key in current_input if isinstance(key, str))
+            relevant_input and
+            "KEY_NUMLOCK" in relevant_input and
+            not any(
+                key.startswith("KEY_KP")
+                for key in relevant_input
+                if isinstance(key, str)
+            )
         )
 
         if is_genuine_numlock:

src/fenrirscreenreader/screenDriver/ptyDriver.py

@@ -302,6 +302,35 @@ class driver(screenDriver):
             return
         self.env["runtime"]["OutputManager"].interrupt_output()
 
+    def handle_stdin_input(self, msg_bytes, event_queue):
+        if self.synthesize_backspace_shortcut(msg_bytes, event_queue):
+            return
+        self.interrupt_output_on_stdin_input(msg_bytes)
+        self.inject_text_to_screen(msg_bytes)
+
+    def synthesize_backspace_shortcut(self, msg_bytes, event_queue):
+        if msg_bytes not in [b"\x7f", b"\x08"]:
+            return False
+        if "KEY_FENRIR" not in self.env["input"]["curr_input"]:
+            return False
+
+        event_time = time.time()
+        for event_state in [1, 0]:
+            event_queue.put(
+                {
+                    "Type": FenrirEventType.keyboard_input,
+                    "data": {
+                        "event_name": "KEY_BACKSPACE",
+                        "event_value": 0,
+                        "event_sec": int(event_time),
+                        "event_usec": int((event_time % 1) * 1000000),
+                        "event_state": event_state,
+                        "event_type": 0,
+                    },
+                }
+            )
+        return True
+
     def get_session_information(self):
         self.env["screen"]["autoIgnoreScreens"] = []
         self.env["general"]["prev_user"] = getpass.getuser()
@@ -434,8 +463,7 @@ class driver(screenDriver):
                         )
                         break
                     try:
-                        self.interrupt_output_on_stdin_input(msg_bytes)
-                        self.inject_text_to_screen(msg_bytes)
+                        self.handle_stdin_input(msg_bytes, event_queue)
                     except Exception as e:
                         self.env["runtime"][
                             "DebugManager"

tests/unit/test_numlock_command.py

@@ -0,0 +1,65 @@
+import importlib.util
+from pathlib import Path
+from unittest.mock import Mock
+
+import pytest
+
+
+def load_numlock_command():
+    command_path = (
+        Path(__file__).parents[2]
+        / "src"
+        / "fenrirscreenreader"
+        / "commands"
+        / "onKeyInput"
+        / "80500-numlock.py"
+    )
+    spec = importlib.util.spec_from_file_location(
+        "numlock_command", command_path
+    )
+    module = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(module)
+    return module.command
+
+
+@pytest.mark.unit
+def test_numlock_off_can_be_announced_from_release_event():
+    output_manager = Mock()
+    command = load_numlock_command()()
+    command.initialize(
+        {
+            "input": {
+                "old_num_lock": True,
+                "new_num_lock": False,
+                "curr_input": [],
+                "prev_input": ["KEY_NUMLOCK"],
+            },
+            "runtime": {"OutputManager": output_manager},
+        }
+    )
+
+    command.run()
+
+    output_manager.present_text.assert_called_once()
+    assert output_manager.present_text.call_args.args[0] == "Numlock off"
+
+
+@pytest.mark.unit
+def test_numlock_command_ignores_non_numlock_release():
+    output_manager = Mock()
+    command = load_numlock_command()()
+    command.initialize(
+        {
+            "input": {
+                "old_num_lock": True,
+                "new_num_lock": False,
+                "curr_input": [],
+                "prev_input": ["KEY_KP1"],
+            },
+            "runtime": {"OutputManager": output_manager},
+        }
+    )
+
+    command.run()
+
+    output_manager.present_text.assert_not_called()

tests/unit/test_pty_terminal_sequences.py

@@ -1,6 +1,7 @@
 import pytest
 from unittest.mock import Mock
 
+from fenrirscreenreader.core.eventData import FenrirEventType
 from fenrirscreenreader.screenDriver.ptyDriver import PTYConstants
 from fenrirscreenreader.screenDriver.ptyDriver import Terminal
 from fenrirscreenreader.screenDriver.ptyDriver import driver as PtyDriver
@@ -109,3 +110,37 @@ def test_pty_stdin_input_leaves_filtered_interrupts_to_key_events():
     pty_driver.interrupt_output_on_stdin_input(b"a")
 
     output_manager.interrupt_output.assert_not_called()
+
+
+@pytest.mark.unit
+def test_pty_backspace_with_fenrir_key_synthesizes_shortcut_events():
+    pty_driver = PtyDriver()
+    event_queue = Mock()
+    pty_driver.env = {
+        "input": {"curr_input": ["KEY_FENRIR"]},
+    }
+
+    handled = pty_driver.synthesize_backspace_shortcut(b"\x7f", event_queue)
+
+    assert handled is True
+    assert event_queue.put.call_count == 2
+    first_event = event_queue.put.call_args_list[0].args[0]
+    second_event = event_queue.put.call_args_list[1].args[0]
+    assert first_event["Type"] == FenrirEventType.keyboard_input
+    assert first_event["data"]["event_name"] == "KEY_BACKSPACE"
+    assert first_event["data"]["event_state"] == 1
+    assert second_event["data"]["event_state"] == 0
+
+
+@pytest.mark.unit
+def test_pty_plain_backspace_is_not_synthesized():
+    pty_driver = PtyDriver()
+    event_queue = Mock()
+    pty_driver.env = {
+        "input": {"curr_input": []},
+    }
+
+    handled = pty_driver.synthesize_backspace_shortcut(b"\x7f", event_queue)
+
+    assert handled is False
+    event_queue.put.assert_not_called()

tests/unit/test_x11_terminal_mode.py

@@ -167,23 +167,50 @@ def test_x11_build_passive_grabs_for_fenrir_keys_and_shortcuts():
     input_manager = Mock(convert_event_name=lambda key: key)
     x11.env = {
         "input": {
-            "fenrir_key": ["KEY_KP0", "KEY_CAPSLOCK"],
+            "fenrir_key": ["KEY_KP0", "KEY_META"],
             "script_key": [],
         },
         "rawBindings": {
             "fenrir_combo": [1, ["KEY_FENRIR", "KEY_KP8"]],
             "bare_keypad": [1, ["KEY_KP5"]],
             "ctrl_keypad": [1, ["KEY_CTRL", "KEY_KP2"]],
+            "meta_combo": [1, ["KEY_FENRIR", "KEY_BACKSPACE"]],
         },
         "runtime": {"InputManager": input_manager},
     }
 
     grabs = x11.build_passive_grabs()
 
-    assert ("KEY_KP0", 0) in grabs
-    assert ("KEY_CAPSLOCK", 0) in grabs
-    assert ("KEY_KP5", 0) in grabs
-    assert ("KEY_KP2", X.ControlMask) in grabs
+    assert ("KEY_KP0", 0, True) in grabs
+    assert ("KEY_META", 0, True) in grabs
+    assert ("KEY_NUMLOCK", 0, True) in grabs
+    assert ("KEY_KP5", 0, False) in grabs
+    assert ("KEY_KP2", X.ControlMask, False) in grabs
+    assert ("KEY_BACKSPACE", X.Mod4Mask, True) in grabs
+
+
+@pytest.mark.unit
+def test_x11_optional_modifier_masks_can_exclude_numlock():
+    x11 = X11Driver()
+    x11.num_lock_mask = X.Mod2Mask
+
+    masks = x11.optional_modifier_masks(0, include_num_lock=False)
+
+    assert X.Mod2Mask not in masks
+    assert X.Mod2Mask | X.LockMask not in masks
+
+
+@pytest.mark.unit
+def test_x11_get_led_state_reads_lock_modifiers_from_pointer_mask():
+    x11 = X11Driver()
+    x11.num_lock_mask = X.Mod2Mask
+    pointer = Mock(mask=X.Mod2Mask | X.LockMask)
+    x11.root = Mock()
+    x11.root.query_pointer.return_value = pointer
+
+    assert x11.get_led_state(0) is True
+    assert x11.get_led_state(1) is True
+    assert x11.get_led_state(2) is False
 
 
 @pytest.mark.unit