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Changes between Initial Version and Version 1 of Ticket #28866, comment 3

-              initial
+              v1
 I know that static assets must not be duplicated as well as follow predefined order. The easiest way to do it will be like that:
+{{{
 for item in list_2:
     if item not in list_1:
         list_1.append(item)
+}}}
 it will follow all the orders and not duplicate anything.
 …
 For throwing the warning (if you really badly need it, guys), we can do that way:
+{{{
 order_list = []
 for item in list_2:
 …
 if order_list is not sort(order_list):
     OrderWarning(...)
+}}}
 So, the idea will be that we can associate order of first and second list and if it is not strictly incremental then throw the warning.