Brion Vibber wrote:
This was added in r32492 to work around a low-level PHP notice message which displayed when a custom reference group was referenced with no members present.
I've reverted it in r33003; the message is removed, and a proper check for empty groups is now done so it doesn't trigger the PHP error message.
<references/> for an unused group (or default group) will now be silent, as it was before.
Thanks. Good to know I wasn't doing something wrong over all those years. :)