isolation test output format

Hi:

I'm using the isolation test to write some tests, and then I found the
output is unclear some time.
for example:

a b c
1988-12-14 01:03:031988-12-13 22:03:03-011988-12-14

Actually what I want is there are some spaces among the fields. like:

a b c
1988-12-14 01:03:03 1988-12-13 22:03:03-01 1988-12-14

The simplest reproduce case is:

setup
{
CREATE TABLE c_tm(a timestamp, b timestamptz, c date);
}

session "s1"
step "s1inserttm"
{
INSERT INTO c_tm VALUES('1988-12-14 01:03:03 +2', '1988-12-14
01:03:03 +2', '1988-12-14 01:03:03 +2');
}

step "s1read"
{
SELECT * FROM c_tm;
}

Is there any simple way to improve this?

--
Best Regards
Andy Fan