Bug or feature? COPY ignores column defaults

At release 6.4.2, COPY does not respect column defaults:

junk=> create table testbed (
junk-> f1 int4 default 5,
junk-> f2 float default 7.34,
junk-> f3 datetime default now(),
junk-> f4 text default 'default');
CREATE
junk=> copy testbed from stdin;
Enter info followed by a newline
End with a backslash and a period on a line by itself.
>>
>> \.
junk=> select * from testbed;
f1|f2|f3|f4
--+--+--+--
0| | |
(1 row)

INSERT works correctly, however.

Is this intentional, or a bug?

--
Oliver Elphick Oliver(dot)Elphick(at)lfix(dot)co(dot)uk
Isle of Wight http://www.lfix.co.uk/oliver
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