Watchlist module doesn't check CCK fields for bad words

This has been something I've been wanting to tackle across even for non CCK fields (other people's own modules).

For the 6.x branch, I implemented a hook that will allow extra text to be added to sift through by the watchlist module (that way, someone's custom module to could take a stab at using it). However, I also don't expect for CCK to add my hook ;) For CCK, what do you need to implement to check through its set of fields?

I should have asked for more info...

Since no one has been able to offer how to check through CCK fields, I see few possible solutions in this scenario. If my hook is implemented by some modules, it checks that content. Otherwise, it runs a node_view (or comment view?) and checks that content. Let me know how that sounds.