That is,  `name:cmn-Latn` and `name:cmn-Latn-pinyin` to be used. Otherwise, you cause an awkward situation where there is `name:zh-Latn=` and `name:yue-Latn` .
The international standards can also be read critically. Viz `jyutping` has `Prefix: yue` , but `zh-Latn-pinyin` is used instead of `zh--pinyin` for some reason. This doesn't serves the aim of consistency. 