civicrm/civicrm-core — pull request #3055 by agh1 (2014-04-30 19:16:38+00:00)
Title: CRM-14134, CRM-14540, CRM-14541 combined event dedupe rule changes

Use Unsupervised matching rule, or one selected specific to that event, for online event registrations. Also, check event online registration settings compatibility with the dedupe rule.