--- a/configmix/config.py	Fri Dec 10 01:05:34 2021 +0100
+++ b/configmix/config.py	Fri Dec 10 01:33:37 2021 +0100
@@ -238,6 +238,15 @@
     is_jail = False
     """Flag to show that this is not a jail for another configuration"""
 
+    def __getitem__(self, key):
+        """Mapping interface that forwards to :meth:`~.getvarl_s`
+
+        """
+        if isinstance(key, (tuple, list)):
+            return self.getvarl_s(*key)
+        else:
+            return self.getvarl_s(key)
+
     def getvarl(self, *path, **kwds):
         """Get a variable where the hierarchy is given in `path` as sequence
         and the namespace is given in the `namespace` keyword argument.
@@ -513,7 +522,8 @@
         if not path:
             return self
         try:
-            v = self.expand_if_reference(self[path[0]])
+            # v = self.expand_if_reference(self[path[0]])
+            v = self.expand_if_reference(super(Configuration, self).__getitem__(path[0]))
             for p in path[1:]:
                 v = self.expand_if_reference(v[p])
         except TypeError:
@@ -808,6 +818,15 @@
         if self._path:
             new_base.getvarl(*self._path)
 
+    def __getitem__(self, key):
+        """Mapping interface that forwards to :meth:`~.getvarl_s`
+
+        """
+        if isinstance(key, (tuple, list)):
+            return self.getvarl_s(*key)
+        else:
+            return self.getvarl_s(key)
+
     def getvarl(self, *path, **kwds):
         return self._base.getvarl(*(self._path + path), **kwds)