Error Trapping in Rules Triggers Functions

Hi,

Am I right in saying that postgres does not have facilities to trap
errors in functions?

I would like to be able to fire a trigger/rule after an insert and
regardless of whether there is an error in the function called by the
trigger/rule I would like the insert to go ahead. In v7.4 I have not
been able to find anyway to do this...

I have seen a few posts discussing exception handling in v8 so it
appears that it is on the way?

Thanks,
Aaron