# File lib/sass/selector/simple.rb, line 106
      def unify_namespaces(ns1, ns2)
        return nil, false unless ns1 == ns2 || ns1.nil? || ns1 == '*' || ns2.nil? || ns2 == '*'
        return ns2, true if ns1 == '*'
        return ns1, true if ns2 == '*'
        [ns1 || ns2, true]
      end