Allow new style aliases to be stored

IPython/core/alias.py

@@ -210,6 +210,14 b' class AliasManager(Configurable):'
             raise InvalidAliasError("An alias command must be a string, "
                                     "got: %r" % cmd)
         return True
+    
+    def retrieve_alias(self, name):
+        """Retrieve the command to which an alias expands."""
+        caller = self.shell.magics_manager.magics['line'].get(name, None)
+        if isinstance(caller, AliasCaller):
+            return caller.cmd
+        else:
+            raise ValueError('%s is not an alias' % name)
 
     def call_alias(self, alias, rest=''):
         """Call an alias given its name and the rest of the line."""

IPython/extensions/storemagic.py

@@ -211,16 +211,17 b' class StoreMagics(Magics, Configurable):'
             except KeyError:
                 # it might be an alias
                 # This needs to be refactored to use the new AliasManager stuff.
-                if args[0] in ip.alias_manager:
-                    name = args[0]
-                    nargs, cmd = ip.alias_manager.alias_table[ name ]
-                    staliases = db.get('stored_aliases',{})
-                    staliases[ name ] = cmd
-                    db['stored_aliases'] = staliases
-                    print "Alias stored: %s (%s)" % (name, cmd)
-                    return
-                else:
-                    raise UsageError("Unknown variable '%s'" % args[0])
+                name = args[0]
+                try:
+                    cmd = ip.alias_manager.retrieve_alias(name)
+                except ValueError:
+                    raise UsageError("Unknown variable '%s'" % name)
+                
+                staliases = db.get('stored_aliases',{})
+                staliases[name] = cmd
+                db['stored_aliases'] = staliases
+                print "Alias stored: %s (%s)" % (name, cmd)
+                return
 
             else:
                 modname = getattr(inspect.getmodule(obj), '__name__', '')