Hi, Would it be possible to mark functions in contrib/unnaccent [1] as IMMUTABLE?
We would gain the possibility to use it to enforce uniqueness. I understand that the main drawback is that unicode rules are periodically updated. So it would be needed to reindex indices on unaccent() after upgrade. Thank you, petru ghita [1] https://github.com/postgres/postgres/tree/master/contrib/unaccent
