drush-ops/drush — pull request #17 by weitzman (2013-08-20 18:59:01+00:00)
Title: Avoid '--invoke is an unrecognized option' error when Drush6 receives a ...

As proposed by Greg on drupal.org. I added the option in the verify function since 'invoke' is really just a whitelisted option, and should thus not be listed as the global option array IMO.