(Caveat: I am new to Elasticsearch and the answer given relies solely on the two links I posted below. However, these are official Elasticsearch / Lucene sources and they are pretty clear about it)
As of today (2016-06-28), it does not seem to be possible.
This feature would not be implemented in Elasticsearch but in the underlying Lucene. However, it seems to be a complex issue that is not going to be resolved anytime soon.
Read more here: Source link