diff --git a/ansible_mitogen/planner.py b/ansible_mitogen/planner.py
index ec14fdcc..b5f1bca0 100644
--- a/ansible_mitogen/planner.py
+++ b/ansible_mitogen/planner.py
@@ -241,14 +241,16 @@ class WantJsonPlanner(ScriptPlanner):
         return 'WANT_JSON' in invocation.module_source
 
 
-class NativePlanner(Planner):
+class NewStylePlanner(Planner):
     """
     The Ansiballz framework differs from module replacer in that it uses real
     Python imports of things in ansible/module_utils instead of merely
     preprocessing the module.
     """
+    runner_name = 'NewStyleRunner'
+
     def detect(self, invocation):
-        return True
+        return 'from ansible.module_utils.' in invocation.module_source
 
     def get_command_module_name(self, module_name):
         """
@@ -267,7 +269,7 @@ class NativePlanner(Planner):
 
     def plan(self, invocation):
         return {
-            'runner_name': 'NativeRunner',
+            'runner_name': self.runner_name,
             'module': invocation.module_name,
             'mod_name': self.get_command_module_name(invocation.module_name),
             'args': invocation.module_args,
@@ -275,12 +277,28 @@ class NativePlanner(Planner):
         }
 
 
+class ReplacerPlanner(NewStylePlanner):
+    runner_name = 'ReplacerRunner'
+
+    def detect(self, invocation):
+        return module_common.REPLACER in invocation.module_source
+
+
+class OldStylePlanner(ScriptPlanner):
+    runner_name = 'OldStyleRunner'
+
+    def detect(self, invocation):
+        # Everything else.
+        return True
+
+
 _planners = [
+    BinaryPlanner,
+    # ReplacerPlanner,
+    NewStylePlanner,
     # JsonArgsPlanner,
     WantJsonPlanner,
-    # ReplacerPlanner,
-    BinaryPlanner,
-    NativePlanner,
+    OldStylePlanner,
 ]
 
 
diff --git a/ansible_mitogen/runner.py b/ansible_mitogen/runner.py
index cf970a6b..ed421cca 100644
--- a/ansible_mitogen/runner.py
+++ b/ansible_mitogen/runner.py
@@ -131,7 +131,7 @@ class TemporaryEnvironment(object):
         os.environ.update(self.original)
 
 
-class NativeModuleExit(Exception):
+class NewStyleModuleExit(Exception):
     """
     Capture the result of a call to `.exit_json()` or `.fail_json()` by a
     native Ansible module.
@@ -148,24 +148,24 @@ class NativeModuleExit(Exception):
         )
 
 
-class NativeMethodOverrides(object):
+class NewStyleMethodOverrides(object):
     @staticmethod
     def exit_json(self, **kwargs):
         """
         Raise exit_json() output as the `.dct` attribute of a
-        :class:`NativeModuleExit` exception`.
+        :class:`NewStyleModuleExit` exception`.
         """
         kwargs.setdefault('changed', False)
-        raise NativeModuleExit(self, **kwargs)
+        raise NewStyleModuleExit(self, **kwargs)
 
     @staticmethod
     def fail_json(self, **kwargs):
         """
         Raise fail_json() output as the `.dct` attribute of a
-        :class:`NativeModuleExit` exception`.
+        :class:`NewStyleModuleExit` exception`.
         """
         kwargs.setdefault('failed', True)
-        raise NativeModuleExit(self, **kwargs)
+        raise NewStyleModuleExit(self, **kwargs)
 
     klass = ansible.module_utils.basic.AnsibleModule
 
@@ -183,7 +183,7 @@ class NativeMethodOverrides(object):
         self.klass.fail_json = self._original_fail_json
 
 
-class NativeModuleArguments(object):
+class NewStyleModuleArguments(object):
     """
     Patch ansible.module_utils.basic argument globals.
     """
@@ -200,22 +200,22 @@ class NativeModuleArguments(object):
         ansible.module_utils.basic._ANSIBLE_ARGS = self.original
 
 
-class NativeRunner(Runner):
+class NewStyleRunner(Runner):
     """
     Execute a new-style Ansible module, where Module Replacer-related tricks
     aren't required.
     """
     def __init__(self, mod_name, **kwargs):
-        super(NativeRunner, self).__init__(**kwargs)
+        super(NewStyleRunner, self).__init__(**kwargs)
         self.mod_name = mod_name
 
     def setup(self):
-        super(NativeRunner, self).setup()
-        self._overrides = NativeMethodOverrides()
-        self._args = NativeModuleArguments(self.args)
+        super(NewStyleRunner, self).setup()
+        self._overrides = NewStyleMethodOverrides()
+        self._args = NewStyleModuleArguments(self.args)
 
     def revert(self):
-        super(NativeRunner, self).revert()
+        super(NewStyleRunner, self).revert()
         self._args.revert()
         self._overrides.revert()
 
@@ -237,7 +237,7 @@ class NativeRunner(Runner):
             # already have been imported for a previous invocation, so we need
             # to invoke main explicitly.
             mod.main()
-        except NativeModuleExit, e:
+        except NewStyleModuleExit, e:
             return {
                 'rc': 0,
                 'stdout': json.dumps(e.dct),
@@ -369,7 +369,6 @@ class ScriptRunner(ProgramRunner):
         """
         # Couldn't find shebang, so let shell run it, because shell assumes
         # executables like this are just shell scripts.
-        LOG.debug('++++++++++++++ %s', self.interpreter)
         if not self.interpreter:
             return s
 
@@ -386,7 +385,7 @@ class ScriptRunner(ProgramRunner):
         return '\n'.join(new)
 
 
-class JsonArgsFileRunner(ScriptRunner):
+class JsonArgsFileRunner(ArgsFileRunner, ScriptRunner):
     JSON_ARGS = '<<INCLUDE_ANSIBLE_MODULE_JSON_ARGS>>'
 
     def _get_args_contents(self):
@@ -403,8 +402,7 @@ class WantJsonRunner(ArgsFileRunner, ScriptRunner):
     pass
 
 
-
-class OldStyleRunner(ScriptRunner):
+class OldStyleRunner(ArgsFileRunner, ScriptRunner):
     def _get_args_contents(self):
         """
         Mimic the argument formatting behaviour of