title: Different show between "cat" and "vim"
body: <p><code>cat /tmp/test</code>:</p>
  
  <pre><code>&gt;&gt; cat /tmp/test
  Hello World
  Hello World
  Hello World
  Hello World
  </code></pre>
  
  <p><code>vim /tmp/test</code>:</p>
  
  <pre><code>&gt;&gt; vim /tmp/test
  ==&gt;
  1 ^[[1;31mHello World^[[0m
  2 ^[[2;32mHello World^[[0m
  3 ^[[5;33mHello World^[[0m
  4 ^[[6;34mHello World^[[0m
  </code></pre>
  
  <p>Sorry , I have google it , but I still don't know how to let <code>vim /tmp/test</code> show the same with <code>cat /tmp/test</code>.</p>
  
  <p>Could you please give me a hand? thanks.</p>