use 'sed -E' for all OS
use 'sed -E' for all OS

checkstyle/contribution,rnveach/contribution,MEZk/contribution,Vladlis/contribution,rnveach/contribution,Vladlis/contribution,checkstyle/contribution,MEZk/contribution,checkstyle/contribution,MEZk/contribution,checkstyle/contribution,Vladlis/contribution,checkstyle/contribution,MEZk/contribution,rnveach/contribution,MEZk/contribution,rnveach/contribution,checkstyle/contribution,Vladlis/contribution,rnveach/contribution,rnveach/contribution,Vladlis/contribution,checkstyle/contribution,Vladlis/contribution,rnveach/contribution,MEZk/contribution