COPY with default values?

Let's say I have a table of keywords, with a SERIAL primary key.

CREATE TABLE keywords (
key_id SERIAL PRIMARY KEY,
key_text TEXT
);

Now I would like to initialize this table with a COPY statement, but
without supplying values for the primary key. In other words, how can I
use COPY to perform the same function as

INSERT INTO keywords (keyword_text) VALUES ('foo');
INSERT INTO keywords (keyword_text) VALUES ('bar');
...

I have tried

COPY keywords FROM stdin USING DELIMITERS '|';
|foo
|bar
...

and also

0|foo
0|bar

and even

\N|foo
\N|bar

I even tried creating a view on keywords that has only keyword_text, and
copying into THAT--no luck. Then I wrote a rule to replace inserts on the
view with inserts on the table, but apparently COPY doesn't trigger INSERT
rules. Grumble...

--
Jeff Boes vox 616.226.9550
Database Engineer fax 616.349.9076
Nexcerpt, Inc. jboes(at)nexcerpt(dot)com