map default namespace try

map.go

@@ -33,10 +33,11 @@ func (m *Map) List(ns []string, limits ...string) ([]string, error) {
 	limits = resolveLimits(limits)
 
 	keys := []string{}
-	if _, ok := (*m)[namespace]; !ok {
-		return nil, nil
+	n, _ := (*m)[DefaultNamespace]
+	if v, ok := (*m)[namespace]; ok {
+		n = v
 	}
-	for k := range (*m)[namespace] {
+	for k := range n {
 		if k >= limits[0] && k <= limits[1] {
 			keys = append(keys, k)
 		}