CREATE OR REPLACE FUNCTION unifold (text) RETURNS text LANGUAGE 'c' IMMUTABLE STRICT AS '$libdir/utf8proc_pgsql.so', 'utf8proc_pgsql_unifold'; CREATE OR REPLACE FUNCTION unistrip (text) RETURNS text LANGUAGE 'c' IMMUTABLE STRICT AS '$libdir/utf8proc_pgsql.so', 'utf8proc_pgsql_unistrip';