Allow override Scalar (assumed for dict,list) by None
diff --git a/README-extentions.rst b/README-extentions.rst
index 554a62d..97d78af 100644
--- a/README-extentions.rst
+++ b/README-extentions.rst
@@ -92,6 +92,37 @@
the final value.
+Allow override list and dicts by empty entity,None instead of merge
+-------------------------------------------------------------------
+
+With settings:
+
+.. code-block:: yaml
+
+ allow_none_override: True # default True
+
+ # note dict,list over None is allowed and not configurable
+
+Referenced lists or dicts can now be overriden by None or empty type of dict, list:
+
+.. code-block:: yaml
+
+ # nodes/test.yml
+ parameters:
+ one:
+ a: 1
+ b: 2
+ two: {}
+ three: None
+
+ # classes/test1.yml
+ parameters:
+ one: ${two}
+
+ # classes/test2.yml
+ parameters:
+ three: ${one}
+
Nested References
-----------------