Tab completion fixes.

tests/unit/test_pty_terminal_sequences.py

@@ -116,6 +116,50 @@ def test_pty_stdin_input_interrupt_does_not_block_input_injection():
         pty_driver.stdin_interrupt_thread.join(timeout=1.0)
 
 
+@pytest.mark.unit
+def test_pty_raw_tab_records_recent_tab_keypress():
+    pty_driver = PtyDriver()
+    settings_manager = Mock()
+    settings_manager.get_setting_as_bool.return_value = False
+    input_manager = Mock()
+    pty_driver.env = {
+        "input": {"curr_input": []},
+        "runtime": {
+            "DebugManager": Mock(write_debug_out=Mock()),
+            "InputManager": input_manager,
+            "SettingsManager": settings_manager,
+        },
+    }
+    pty_driver.inject_text_to_screen = Mock()
+
+    pty_driver.handle_stdin_input(b"\t", Mock())
+
+    input_manager.record_unmanaged_keypress.assert_called_once_with("KEY_TAB")
+    pty_driver.inject_text_to_screen.assert_called_once_with(b"\t")
+
+
+@pytest.mark.unit
+def test_pty_plain_stdin_does_not_record_tab_keypress():
+    pty_driver = PtyDriver()
+    settings_manager = Mock()
+    settings_manager.get_setting_as_bool.return_value = False
+    input_manager = Mock()
+    pty_driver.env = {
+        "input": {"curr_input": []},
+        "runtime": {
+            "DebugManager": Mock(write_debug_out=Mock()),
+            "InputManager": input_manager,
+            "SettingsManager": settings_manager,
+        },
+    }
+    pty_driver.inject_text_to_screen = Mock()
+
+    pty_driver.handle_stdin_input(b"a", Mock())
+
+    input_manager.record_unmanaged_keypress.assert_not_called()
+    pty_driver.inject_text_to_screen.assert_called_once_with(b"a")
+
+
 @pytest.mark.unit
 def test_pty_stdin_input_honors_interrupt_disabled():
     pty_driver = PtyDriver()