title: unix diff side-to-side results?
body: <p>How can I plot the results of a unix diff command side-to-side instead of one difference after the other? See below for an example:    </p>
  
  <pre><code>    diff /tmp/test1  /tmp/test2
  1,4c1,2
  &lt; asfdsadf
  &lt; asdfsad
  &lt; fsaf
  &lt; fdsadf
  ---
  &gt; asdfsafdsf
  &gt; saf
  6,8d3
  &lt; sadf
  &lt; asdf
  &lt; sadf
  10d4
  &lt; fasd
  12,13c6,14
  &lt; sadfa
  &lt; fd
  ---
  &gt; sadf
  &gt; sadf
  &gt; sadf
  &gt; sadf
  &gt; sadf
  &gt; sadf
  &gt; sadf
  &gt; sadf
  &gt; safa
  </code></pre>
  
  <p>I would like to have something like:</p>
  
  <pre><code>diff /tmp/test1  /tmp/test2
  1,4c1,2
  &lt; asfdsadf       &gt; asdfsafdsf
  &lt; asdfsad        &gt; saf       
  &lt; fsaf
  &lt; fdsadf
  ---
  6,8d3
  &lt; sadf
  &lt; asdf
  &lt; sadf
  10d4
  &lt; fasd
  12,13c6,14
  &lt; sadfa               &gt; sadf
  &lt; fd              &gt; sadf
  ---               &gt; sadf
                &gt; sadf
                &gt; sadf
                &gt; sadf
                &gt; sadf
                &gt; sadf
                &gt; safa
  </code></pre>