# File lib/sass/selector/simple.rb, line 74
      def unify(sels)
        return sels if sels.any? {|sel2| eql?(sel2)}
        sels_with_ix = Sass::Util.enum_with_index(sels)
        if !is_a?(Pseudo) || (sels.last.is_a?(Pseudo) && sels.last.type == :element)
          _, i = sels_with_ix.find {|sel, _| sel.is_a?(Pseudo)}
        end
        return sels + [self] unless i
        sels[0...i] + [self] + sels[i..-1]
      end