david(dot)g(dot)levy(at)gmail(dot)com writes:
> I'm guessing that "out" is some kind of internal reserved word - I can't
> find any documentation on this so submitting a bug until it can be
> clarified/specified behavior:
No, but it's listed in english.stop. Feel free to make a custom
stopword list if you don't like that.
regression=# select to_tsquery('mon:*');
to_tsquery
------------
'mon':*
(1 row)
regression=# select to_tsquery('out:*');
NOTICE: text-search query contains only stop words or doesn't contain lexemes, ignored
to_tsquery
------------
(1 row)
regards, tom lane