Backport PR #3117: propagate automagic change to shell

Automagic toggling was broken.

this should fix it. Need to check for backport on 0.13.x

IPython/core/interactiveshell.py

@@ -2009,7 +2009,7 @@ def set_completer_frame(self, frame=None):
     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

@@ -303,6 +303,9 @@ 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.',