[fix] super subtile bug where on_attribute wasn't set correctly due t…

…o root different behavior

redbaron.py

@@ -1013,7 +1013,6 @@ def decrease_indentation(self, number_of_spaces):
     def insert_before(self, value, offset=0):
         self.parent.insert(self.index_on_parent - offset, value)
 
-
     def insert_after(self, value, offset=0):
         self.parent.insert(self.index_on_parent + 1 + offset, value)
 
@@ -2736,6 +2735,12 @@ def __init__(self, source_code):
         self.on_attribute = None
         self.parent = None
 
+    def _convert_input_to_node_object(self, value, parent, on_attribute):
+        return GenericNodesUtils._convert_input_to_node_object(self, value, self, "root")
+
+    def _convert_input_to_node_object_list(self, value, parent, on_attribute):
+        return GenericNodesUtils._convert_input_to_node_object_list(self, value, self, "root")
+
     def _generate_expected_list(self):
         def generate_separator():
             separator = self.middle_separator.copy()

tests/test_regressions.py

@@ -0,0 +1,8 @@
+from redbaron import RedBaron
+
+
+def test_mixmatch_with_redbaron_base_node_and_proxy_list_on_parent():
+    red = RedBaron("foo = 42\nprint 'bar'\n")
+    red.insert(0, "baz")
+    assert red[0].on_attribute == "root"
+    assert red[0].parent is red