Fix range access overshadowing key access

minproto.leg

@@ -1353,16 +1353,16 @@ oop GetArray_eval(oop exp, oop env)
             default:     fatal("[]: %s is not indexable", storeString(obj, 0));
         }
     }
-    if (getType(ind) == Object) {
-	switch (getType(obj)) {
-        case String: {
-            int start = integerValue(eval(Object_get(ind, sym_start), env), "[..]");
-            int end   = integerValue(eval(Object_get(ind, sym_end  ), env), "[..]");
-            oop slice = newStringLen(String_aref(obj, start), end - start);
-            return slice;
+    if (getType(ind) == Object && Object_get(ind, prop_name) == Object_get(pRange, prop_name)) {
+        switch (getType(obj)) {
+            case String: {
+                int start = integerValue(eval(Object_get(ind, sym_start), env), "[..]");
+                int end   = integerValue(eval(Object_get(ind, sym_end  ), env), "[..]");
+                oop slice = newStringLen(String_aref(obj, start), end - start);
+                return slice;
+            }
+            default:     fatal("[]: %s is not range - indexable", storeString(obj, 0));
         }
-	    default:     fatal("[]: %s is not range - indexable", storeString(obj, 0));
-	}
     }
     if (!is(Object, obj)) fatal("[]: %s is not an object", storeString(obj, 0));
     return Object_getLocal(obj, ind);