title: something weird happens after I run vi in my command line
body: <p>Something like below appears and will never stop after I run <code>vi</code> in my command line.</p>
  
  <p>Name collision between I9 I9 I9 I9 I9 I9 I9 I9 I9 I9 I9 I9 I9 I9 I9 I9 I9</p>
  
  <p>Name collision between Ia Ia Ia Ia Ia Ia Ia Ia Ia Ia Ia Ia Ia Ia Ia Ia Ia</p>