feat: support configurable modified-key binding sequences

src/tui.rs

@@ -1432,7 +1432,7 @@ fn draw_status(frame: &mut Frame, editor: &Editor, syntax: &SyntaxCache, status_
     } else {
         format!(" {}", editor.mode())
     };
-    if let Some(sequence) = editor.leader_pending() {
+    if let Some(sequence) = editor.sequence_pending() {
         write!(status, "  leader: {sequence}").unwrap();
     }
     if editor.g_pending() {
@@ -5270,6 +5270,37 @@ mod tests {
         terminal.get_cursor_position().unwrap()
     }
 
+    #[test]
+    fn modified_sequences_navigate_diff_files_and_readonly_panes() {
+        let mut editor = Editor::open(None, vec![]).unwrap();
+        editor.handle(Input::Char('|'));
+        install_readonly_diff(
+            &mut editor,
+            syntax_diff_file("history.txt", "before", "after"),
+        );
+        editor
+            .bind("normal", "ctrl+w h", Some("core.pane.focus_left".into()))
+            .unwrap();
+        let mut terminal = Terminal::new(ratatui::backend::TestBackend::new(120, 30)).unwrap();
+        let mut views = BufferViewports::default();
+        render_native_diff(&mut terminal, &mut views, &mut editor);
+        assert_eq!(editor.diff().unwrap().focus, Focus::Files);
+        editor.handle(Input::Ctrl('w'));
+        assert_eq!(editor.sequence_pending(), Some("Ctrl+w"));
+        assert!(editor.diff().unwrap().files_visible);
+        editor.handle(Input::Char('h'));
+        assert_eq!(editor.diff().unwrap().focus, Focus::After);
+        render_native_diff(&mut terminal, &mut views, &mut editor);
+        editor.handle(Input::Ctrl('w'));
+        editor.handle(Input::Char('h'));
+        assert_eq!(editor.diff().unwrap().focus, Focus::Before);
+        render_native_diff(&mut terminal, &mut views, &mut editor);
+        editor.handle(Input::Ctrl('w'));
+        editor.handle(Input::Char('h'));
+        assert_eq!(editor.pane_id(), 1);
+        assert_eq!(editor.sequence_pending(), None);
+    }
+
     #[test]
     fn wrap_toggle_preserves_caret_screen_row_in_normal_buffers() {
         let directory = Directory::new();