Tab completion fixes.

tests/unit/test_tab_completion_manager.py

@@ -212,6 +212,27 @@ def test_recent_tab_screen_update_works_without_key_input_snapshot():
     assert manager.process_update() == "cuments/"
 
 
+@pytest.mark.unit
+def test_recent_raw_pty_tab_speaks_short_completion_without_capture():
+    manager, env, input_manager = _build_env(
+        "cd Documents/".ljust(20), {"x": 13, "y": 0}
+    )
+    input_manager.get_last_deepest_input.return_value = ["KEY_TAB"]
+    input_manager.get_last_event.return_value = None
+    env["screen"]["old_content_text"] = "cd Docume".ljust(20)
+    env["screen"]["old_cursor"] = {"x": 9, "y": 0}
+    env["commandBuffer"]["tabCompletion"]["pending"] = None
+    _set_screen_update(
+        env,
+        "cd Documents/".ljust(20),
+        {"x": 13, "y": 0},
+        delta="nts/",
+        typing=True,
+    )
+
+    assert manager.process_update() == "nts/"
+
+
 @pytest.mark.unit
 def test_large_insertion_echo_speaks_pasted_cursor_text():
     large_insertion_module = _load_large_insertion_module()