title: How to make vi redraw screen?
body: <p>When I use </p>
  
  <pre><code>git commit --amend
  </code></pre>
  
  <p>It will enter into a vi window to let me input comments for commit, the problem is the vi windows will show some dirty characters from former shell background. So I wonder how can I let vi to reload or redraw the screen to make the screen normal.</p>
  
  <p>So far, I try reset terminal and Ctrl+L, it works, but I wonder is there best answer for such situation?</p>