IMPORTANT: Version 6.6 of Elasticsearch has passed its maintenance date.
This documentation is no longer being updated. For the latest information, see the current release documentation.
cjk_width token filter normalizes CJK width differences:
- Folds fullwidth ASCII variants into the equivalent basic Latin
- Folds halfwidth Katakana variants into the equivalent Kana
This token filter can be viewed as a subset of NFKC/NFKD
Unicode normalization. See the
for full normalization support.