title: How do I pipe in FileMerge as a diff tool with git on OS X?
body: <p>I'm new to git on OS X, and I'm using it via the command line. I come from the world of Tortoise SVN and Beyond Compare on Windows.</p>
  
  <p>I want to be able to send diffs to FileMerge.</p>
  
  <p>I was able to do this with TextMate simply by using:</p>
  
  <pre><code>git diff | mate
  </code></pre>
  
  <p>But I'm not sure how to get that set up so I can use FileMerge instead?</p>