title: What is this vim custom map doing?
body: <p>It has something to do with running the a TestUnit file i.e. it switches out of vim and runs the file.</p>
  
  <pre><code>:map ,t :w\|:!ruby test_spec.rb&lt;cr&gt;
  </code></pre>
  
  <p>Can someone break this command out with some explanation?</p>