diaspora/config/locales/cldr/sl_plurals.rb

{ :sl => { :i18n => {:plural => { :keys => [:one, :two, :few, :other], :rule => lambda { |n| n % 100 == 1 ? :one : n % 100 == 2 ? :two : [3, 4].include?(n % 100) ? :few : :other } } } } }