fix error exiting inline mode

Author: willmcgugan

src/textual/drivers/linux_driver.py

@@ -408,6 +408,7 @@ def process_selector_events(
         try:
             while not self.exit_event.is_set():
                 process_selector_events(selector.select(0.1))
+            selector.unregister(self.fileno)
             process_selector_events(selector.select(0.1), final=True)
 
         finally:

src/textual/drivers/linux_inline_driver.py

@@ -161,11 +161,11 @@ def process_selector_events(
                     self.cursor_origin = (event.x, event.y)
                 else:
                     self.process_event(event)
-                self.process_event(event)
 
         try:
             while not self.exit_event.is_set():
                 process_selector_events(selector.select(0.1))
+            selector.unregister(self.fileno)
             process_selector_events(selector.select(0.1), final=True)
 
         finally:
@@ -296,7 +296,10 @@ def disable_input(self) -> None:
                 if self._key_thread is not None:
                     self._key_thread.join()
                 self.exit_event.clear()
-                termios.tcflush(self.fileno, termios.TCIFLUSH)
+                try:
+                    termios.tcflush(self.fileno, termios.TCIFLUSH)
+                except termios.error:
+                    pass
 
         except Exception as error:
             # TODO: log this
@@ -312,6 +315,7 @@ def stop_application_mode(self) -> None:
         self.disable_input()
         self.write("\x1b[<u")  # Disable kitty protocol
         self.write("\x1b[J")
+        self.flush()
 
         if self.attrs_before is not None:
             try:

src/textual/screen.py

@@ -451,7 +451,7 @@ def render(self) -> RenderableType:
         background = self.styles.background
         try:
             base_screen = visible_screen_stack.get().pop()
-        except IndexError:
+        except LookupError:
             base_screen = None
 
         if base_screen is not None and background.a < 1:

src/textual/widgets/_directory_tree.py

@@ -35,6 +35,7 @@ class DirectoryTree(Tree[DirEntry]):
     ICON_NODE_EXPANDED = "📂 "
     ICON_NODE = "📁 "
     ICON_FILE = "📄 "
+    """Unicode 'icon' to represent a file."""
 
     COMPONENT_CLASSES: ClassVar[set[str]] = {
         "directory-tree--extension",

src/textual/widgets/_tree.py

@@ -517,7 +517,9 @@ class Tree(Generic[TreeDataType], ScrollView, can_focus=True):
     """A widget for displaying and navigating data in a tree."""
 
     ICON_NODE = "▶ "
+    """Unicode 'icon' to use for an expandable node."""
     ICON_NODE_EXPANDED = "▼ "
+    """Unicode 'icon' to use for an expanded node."""
 
     BINDINGS: ClassVar[list[BindingType]] = [
         Binding("shift+left", "cursor_parent", "Cursor to parent", show=False),