title: Merge changes using vimdiff
body: <p>In  my case, I have two files file1 and file2. Using vimdiff, I want to merge the changes as follows:</p>
  
  <ol>
  <li>In first difference, place line from file1 above line from file2. It means difference such as <code>Listing 2</code> in file2 and <code>List 2</code> should be <code>List 2</code> followed by <code>Listing 2</code> in the merged file.</li>
  <li>Reverse case in another change.</li>
  </ol>
  
  <p>Snapshot is shown below.</p>
  
  <p><img src="https://i.stack.imgur.com/tAppj.png" alt="enter image description here"></p>
  
  <p>How can we achieve this using vimdiff?</p>