title: how to unindent in vim without leaving edit mode?
body: <p>I'm writing a lot of python code recently, and i used the tab-to-space mode in vim. I was just wondering how would i unindent in vim without leaving edit mode for example after i finished if...: block. Normally I can just type &lt;&lt; to unindent, but it takes too many keystorkes, anyone have a better idea?</p>