joomla/joomla-cms — pull request #2430 by okonomiyaki3000 (2013-11-07 02:58:43+00:00)
Title: Save empty multi-value fields as empty array (instead of not at all).

Tracker: http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=32564&start=0
This is the 2.5 version of #2429