Garbled log date stamp

[Veiko Kukk]

Hi

ATS 7.1.1.
I'm trying to get human readable timestamps with ascii log formats.

-- Squid Log Format.
squid = format {
  Format = '%<cqtt> %<ttms> %<chi> %<crc>/%<pssc> %<psql> %<cqhm> %<cquc>
%<caun> %<phr>/%<pqsn> %<psct>'
}

test_url_include = filter.accept('cquc CONTAIN /testurl')
test_url_exclude = filter.reject('cquc CONTAIN /testurl')

-- Log only  test requests
log.ascii {
    Filename = 'test_url',
    Format = squid,
    Filters = { test_url_include }
}

-- Normal client usage, excluded test url
log.ascii {
    Filename = 'access',
    Format = squid,
    Filters = { test_url_exclude }
}

# file test_url.log
test_url.log: data

When trying to open with less, less says file is binary.
 less test_url.log
"test_url.log" may be a binary file.  See it anyway?

With timestamp in cqtq this does not happen. Why?