We have a few updates to the elasticsearch plugins that need to go out:
- [extra] T147636: regex fixes for german esset / tokens that expand to non-trigrams
- [highlighter] https://gerrit.wikimedia.org/r/#/c/341317/ add support for synonym query, may not effect production
- Stempel Polish language analyzer from Elastic, v 5.3: https://www.elastic.co/guide/en/elasticsearch/plugins/5.3/analysis-stempel.html
- Ukrainian language analyzer from Elastic, v 5.3: https://www.elastic.co/guide/en/elasticsearch/plugins/5.3/analysis-ukrainian.html
- SmartCN Chinese language analyzer from Elastic, v 5.3: https://www.elastic.co/guide/en/elasticsearch/plugins/5.3/analysis-smartcn.html
- STConvert Analysis for Elasticsearch, v 5.3: https://github.com/medcl/elasticsearch-analysis-stconvert/releases/tag/v5.3.0