[BUGS] Re: BUG #14623: pg_trgm doesn't correctly process some regexp withnegative lookahead - Mailing list pgsql-bugs

I don’t know if this is related or a separate bug, but I am also having this problem with the `+` operator and
characterclasses. Very similar test case: 

CREATE TABLE foobar (x text);
INSERT INTO foobar VALUES ('Trying +1/+1'),('Also doing +20/+20');
CREATE EXTENSION pg_trgm;
CREATE INDEX ON foobar USING gin (x gin_trgm_ops);
SET enable_seqscan TO on;
SELECT * FROM foobar WHERE x  ~ '\+\d+\/\+\d+'; -- Returns both rows
SET enable_seqscan TO off;
SELECT * FROM foobar WHERE x  ~ '\+\d+\/\+\d+'; -- Returns 0 rows

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