Unwrap ResourceList with a functionConfig but no items

kyaml/kio/byteio_reader.go

@@ -178,7 +178,7 @@ func (r *ByteReader) Read() ([]*yaml.RNode, error) {
 		if !r.DisableUnwrapping &&
 			len(values) == 1 && // Only unwrap if there is only 1 value
 			(meta.Kind == ResourceListKind || meta.Kind == "List") &&
-			node.Field("items") != nil {
+			(node.Field("items") != nil || node.Field("functionConfig") != nil) {
 			r.WrappingKind = meta.Kind
 			r.WrappingAPIVersion = meta.APIVersion
 

kyaml/kio/byteio_reader_test.go

@@ -94,6 +94,29 @@ spec:
 elems:
 - a
 - b
+- c`,
+			wrappingAPIVersion: ResourceListAPIVersion,
+			wrappingAPIKind:    ResourceListKind,
+		},
+		//
+		//
+		//
+		{
+			name: "wrapped_resource_list_function_config_without_items",
+			input: `apiVersion: config.kubernetes.io/v1alpha1
+kind: ResourceList
+functionConfig:
+  foo: bar
+  elems:
+  - a
+  - b
+  - c
+`,
+			expectedItems: []string{},
+			expectedFunctionConfig: `foo: bar
+elems:
+- a
+- b
 - c`,
 			wrappingAPIVersion: ResourceListAPIVersion,
 			wrappingAPIKind:    ResourceListKind,