src/vs/workbench/contrib/search/browser/searchWidget.ts/SearchWidget/onReplaceActionbarKeyDown
class SearchWidget:	private onReplaceActionbarKeyDown(keyboardEvent: IKeyboardEvent) {
		if (keyboardEvent.equals(KeyMod.Shift | KeyCode.Tab)) {
			this.focusRegexAction();
			keyboardEvent.preventDefault();
		}
	}