From 8e3867516836c2b7e31175d53ed2e89421f653af Mon Sep 17 00:00:00 2001
From: Andy McCrae <andy.mccrae@gmail.com>
Date: Wed, 21 Mar 2018 15:57:00 +0000
Subject: [PATCH] Add support for --diff in config_template

Add support for the Ansible --diff mode in config_template. This will
show the before/after for config_template changes, in the same way as
the base copy and template modules do.

To utilise this run your playbooks with "--diff --check".
---
 plugins/actions/_v2_config_template.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/plugins/actions/_v2_config_template.py b/plugins/actions/_v2_config_template.py
index 64d57c745..5a8181766 100644
--- a/plugins/actions/_v2_config_template.py
+++ b/plugins/actions/_v2_config_template.py
@@ -564,8 +564,13 @@ class ActionModule(ActionBase):
         new_module_args.pop('list_extend', None)
 
         # Run the copy module
-        return self._execute_module(
+        rc = self._execute_module(
             module_name='copy',
             module_args=new_module_args,
             task_vars=task_vars
         )
+        if self._play_context.diff:
+            rc['diff'] = []
+            rc['diff'].append(self._get_diff_data(_vars['dest'],
+                              transferred_data, task_vars))
+        return rc