I have a frustrating problem. My language tool is installed on opensuse using lucene 8.5.
I cannot use the ngram data since the 1ngrams are in lucene 3 and 3ngrams in lucene 5.
The frustrating part is that I will able to downgrade lucene to 6.6 and upgrade the 3grams.
However, there is no easily availble codec to upgrade the 1grams to a current lucene index formula.
The worst is that with lucene 6.6 I can upgrade the 3grams to 6, but lucene 8.5 can read version 6, but cannot upgrade! The whole system seems be disigned to make version compatibility very difficult.
Language tool will not run without the 1 and 2 ngrams. Is there a way to get a version of the ngrams in in lucene index versions 6 or later?
many thanks wbm