◆ func_needs_index()

bool func_needs_index	(	Oid	funcid,
		const IndexableFunction *	idxfns,
		IndexableFunction *	result
	)

Is the function calling the support function one of those we will enhance with index ops? If so, copy the metadata for the function into idxfn and return true.

If false, how did the support function get added, anyways?