ruflin/Elastica — pull request #495 by trash80 (2013-11-13 22:39:37+00:00)
Title: Modified source from Elastica\Prefix class

Added Elasticsearch regexp filter. Used Elastica\Prefix as a base skeleton to work from since it's a simple key=>value class. http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-regexp-filter.html