V5.5: evaluate_for_skus is a scoping function...

rules_shipping_base.php

@@ -1321,7 +1321,7 @@ class ShippingRule {
 		// The scoping functions need to be handled differently, because they first need to adjust the cart variables to the filtered product list
 		// before evaluating its first argument. So even though parsing the rules handles scoping functions like any other function, their 
 		// evaluation is fundamentally different and is special-cased here:
-		$scoping_functions = array("evaluate_for_categories", "evaluate_for_products", "evaluate_for_vendors", "evaluate_for_manufacturers");
+		$scoping_functions = array("evaluate_for_categories", "evaluate_for_products", "evaluate_for_skus", "evaluate_for_vendors", "evaluate_for_manufacturers");
 		$is_scoping = is_array($expr) && ($expr[0]=="FUNCTION") && (count($expr)>1) && in_array($expr[1], $scoping_functions);
 
 		if (is_null($expr)) {