Yes, I have read tsearchV2-intro.txt
but id do not understand how to add stemmer dictionary :(
test=# SELECT * FROM pg_ts_cfg;
id | ts_name | prs_name | locale
----+-----------------+----------+--------------
1 | default | default | C
2 | default_russian | default | ru_RU.KOI8-R
3 | simple | default |
4 | ua | default | uk_UA
--
WBR, sector119