remove weird symbols in vim (刪除奇怪字元)

From http://deepupc.wordpress.com/2009/10/28/removing-special-charactersmca-in-vi/

to remove character such as ^M, ^K,...

In vi, do a :%s/^M//g

To get the ^M hold the control key, press V then M (Both while holding the control key) and the ^M will appear. This will find all occurances and replace them with nothing.