No it doesn't, still takes French for Catalan (French only comes at third place, after Italian), and Swedish for Dutch.
(Arguably those are close languages, but hey, this is why I'm using this, right?)
Anyway, yeah, franc is for language detecting, but it’s optimised for many languages and works best at longer text. It’s a trade-off. For less languages and shorter texts, check out https://github.com/shuyo/ldig