title: The way to improve vimdiff similarity-searching mechanism
body: <p>I'm trying to understand how vimdiff work.</p>
  
  <p>Here I tried to diff two simple files. The 1st:</p>
  
  <pre><code>abcdefghijklmnopqrstuvwxyz
  
  foo
  
  abcdefghijklmnopqrstuvwxyz iii
  
  bar
  </code></pre>
  
  <p>The 2nd:</p>
  
  <pre><code>abcdefghijklmnopqrstuvwxyz
  
  abcdefghijklmnopqrstuvwxyz
  </code></pre>
  
  <p>Here is result from diffmerge utility:</p>
  
  <p><a href="https://i.stack.imgur.com/U641j.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/U641j.png" alt="enter image description here"></a></p>
  
  <p>And here is result from vim:</p>
  
  <p><a href="https://i.stack.imgur.com/CjAZn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/CjAZn.png" alt="enter image description here"></a></p>
  
  <p>Note that vim doesn't see the similarity between <code>abc...xyz</code> and <code>abc...xyz iii</code> lines and doesn't arrange them visually on one line.</p>
  
  <p>Is there some settings to improve vimdiff in such cases?</p>