ros/genpy — pull request #20 by dirk-thomas (2013-08-16 00:37:08+00:00)
Title: fix passing keys to _fill_message_args

As a follow up of the last pull request I found this inconsistency. Passing `prefix` as the third argument is definitely wrong.

I can see any reason why keys should not be passed. They are responsible for keyword substitution (e.g. 'now').

@wjwwood @tfoote Any comments?