# File lib/less/engine/nodes/element.rb, line 50 def group elements = self.elements.reject {|e| e.is_a?(Mixin::Def) } return self unless elements.size > 1 stack, result, matched = elements.dup, [], false elements.each do e = stack.first result << e unless matched matched = stack[1..-1].each do |ee| if e.equiv? ee and e.elements.size == 0 self[e].set << ee stack.shift else stack.shift break false end end if stack.size > 1 end @rules -= (elements - result) self end