propagate automagic change to shell

IPython/core/interactiveshell.py

@@ -2042,7 +2042,7 b' class InteractiveShell(SingletonConfigurable):'
     def init_magics(self):
         from IPython.core import magics as m
         self.magics_manager = magic.MagicsManager(shell=self,
-                                   confg=self.config,
+                                   config=self.config,
                                    user_magics=m.UserMagics(self))
         self.configurables.append(self.magics_manager)
 

IPython/core/magic.py

@@ -304,6 +304,9 b' class MagicsManager(Configurable):'
     auto_magic = Bool(True, config=True, help=
         "Automatically call line magics without requiring explicit % prefix")
     
+    def _auto_magic_changed(self, name, value):
+        self.shell.automagic = value
+    
     _auto_status = [
         'Automagic is OFF, % prefix IS needed for line magics.',
         'Automagic is ON, % prefix IS NOT needed for line magics.']