Nextcloud Elasticsearch for text files

Hi

I have successfully installed the Elasticsearch full text search functionality into my Nextcloud server and it works perfectly for office and pdf files.

However it does not seem to return results from ordinary text files. Is this by design?

Looking at the Elasticsearch ingest plug-ins I don’t see anything about text files.

https://www.elastic.co/guide/en/elasticsearch/plugins/master/ingest.html

Nor do I see an option for text files in the “Full text search” administration window within Nextcloud.

Any information on this topic would be gratefully received.

Huh, one year without any answer? I have got the same problem and obviously there is no solution to it nor does anyone else have this problem. “Full text search” turns out to be completely useless.