Since release 6.4.0 Lucene (Java) supports TokenStreams a graph at search time.
This corresponding JIRA
Issue<https://issues.apache.org/jira/browse/LUCENE-6664> was the missing piece
Are there any plans to support this feature in Lucene.NET too? If not, do you
think it would be possible to just port
LUCENE-6664<https://issues.apache.org/jira/browse/LUCENE-6664> or would we run
into severe problems, because it was based on v6.4 of Lucene (Java)?