Does full text function support languages other than English?

Does full text function support languages other than English?
like Japanese. Thanks

There are analyzers for a number of languages in FTS, but unfortunately Japanese isn’t one of them.

The analyzers come from Bleve, which is the search library that powers FTS (it’s like Lucene but written in Golang). Bleve is also open source and the maintainer works at Couchbase. If enough people want Japanese and are willing to help out, that should make it easier to get added.

http://www.blevesearch.com/docs/Analyzers/
Best,
-Will