Merge pull request #7765 from samdolan/devel

Raise exception if "file_name" isn't passed to bin/ansible-vault

bin/ansible-vault

@@ -112,7 +112,6 @@ def _read_password(filename):
     return data
 
 def execute_create(args, options, parser):
-
     if len(args) > 1:
         raise errors.AnsibleError("'create' does not accept more than one filename")        
 
@@ -204,6 +203,11 @@ def main():
     parser = build_option_parser(action)
     (options, args) = parser.parse_args()
 
+    if not len(args):
+        raise errors.AnsibleError(
+            "The '%s' command requires a filename as the first argument" % action
+        ) 
+
     # execute the desired action
     try:
         fn = globals()["execute_%s" % action]