- // Babel has its own higher-level interface on top of
- // fontspec that is to be used.
- bool const babel = features.useBabel();
+ // As of 2017/11/03, Babel has its own higher-level
+ // interface on top of fontspec that is to be used.
+ bool const babelfonts = features.useBabel()
+ && features.isAvailable("babel-2017/11/03");