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