openlayers/openlayers — pull request #1143 by kjelderg (2013-10-03 17:09:48+00:00)
Title: Add cluster handling to filter

This filters the items in a cluster. I wrote this because handleAdd
gets rerun when using filters before clusters. Not having this
handling was causing the filter to fail (or succeed, depending on your
filter) on each clustered feature since it was inspecting the cluster
and not the features within the cluster.