要看
http://www.cnblogs.com/stephen-liu74/archive/2012/05/30/2306493.html
http://www.cnblogs.com/ringofthec/archive/2010/11/14/hehe.html
http://jingyan.baidu.com/article/6766299717faec54d41b8477.html
http://www.cnblogs.com/hyddd/archive/2010/04/08/1706863.html // vim學習