More plpgsql fun! (deleting large object refs)

Now that I have some magic triggers deleting and updating
rows based on the actions of referring rows, I have to take
care of the deletion of large objects associated with some
rows. Any idea how I should do this?

I tried...
BEGIN
SELECT lo_unlink(OLD.bootstrap_script);
SELECT lo_unlink(OLD.update_archive);
END;

...this gave "Unexpected SELECT in..." errors.

I tried...
BEGIN
lo_unlink(OLD.bootstrap_script);
lo_unlink(OLD.update_archive);
END;

...this gave parse errors...

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Adam Haberlach |A cat spends her life conflicted between a
adam(at)newsnipple(dot)com |deep, passionate, and profound desire for
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'88 EX500 |profound desire to avoid getting wet.