Reference to captured group value with \g<...> Permanently deleted user 创建于 2016年11月24日 17:43 abs\(\s?(\$[A-Za-z0-9_]+)\s?\)\s?={2,3}\s?\g<1>how cat i make this work ?
ref. http://stackoverflow.com/questions/40792293/reference-to-captured-group-value-with-g