joomla/joomla-cms — pull request #988 by okonomiyaki3000 (2013-04-15 03:06:32+00:00)
Title: When triggering 'onContentBeforeSave', always pass three parameters

The third, $isNew, is required. I'm not sure if it really should be, but as it stands now, triggering this event without passing anything will result in a warning in PlgContentFinder and maybe some others.