silverstripe/silverstripe-framework — pull request #2556 by tractorcow (2013-10-17 02:41:11+00:00)
Title: BUG Fixes serious issue with FieldList::addFieldsToTab failing to accept multiple field groups.

Fixes serious issue with `FieldList::addFieldsToTab` failing to accept multiple field groups.

Additional groups beyond the first were ignored because a `FieldGroup` doesn't necessary have a name, and `FieldList` treats two unnamed fields as a collision.

Test cases included.