trigger inheritance on inherited tables ?

I am using table inheritance and it simplifies things for me a lot, but there 
is one thing that is missing: trigger inheritance (I do not mean constraint 
triggers).

So far I wrote function that copy all non-constraint triggers from parent to 
child table,  but I must call that function on all child tables whenever I 
change something in the parent (and there are more than few).
Any idea how to simplify this ?

Regards !