message: I pushed to quickly.
diff: @@ -902,7 +902,9 @@ namespace impl
  case 0: screen.saveWindowTitle(); break; // CSI 22 ; 0 t | save icon & window title
  case 1: return ApplyResult::Unsupported; // CSI 22 ; 1 t | save icon title
  case 2: screen.saveWindowTitle(); break; // CSI 22 ; 2 t | save window title
  + default: return ApplyResult::Unsupported;
  }
  + return ApplyResult::Ok;
  }
  case 23: {
  auto& screen = terminal.screen();
  @@ -911,9 +913,10 @@ namespace impl
  case 0: screen.restoreWindowTitle(); break; // CSI 22 ; 0 t | save icon & window title
  case 1: return ApplyResult::Unsupported; // CSI 22 ; 1 t | save icon title
  case 2: screen.restoreWindowTitle(); break; // CSI 22 ; 2 t | save window title
  + default: return ApplyResult::Unsupported;
  }
  + return ApplyResult::Ok;
  }
  - default: return ApplyResult::Unsupported;
  }
  return ApplyResult::Ok;
  }
  