title: How do you set the username that Mercurial uses for commits?
body: <p>When I commit something in Mercurial like this:</p>
  
  <pre><code>hg commit -m "username question"
  </code></pre>
  
  <p>I see this output:</p>
  
  <pre><code>No username found, using 'WindowsVistaAdmin@ChunkyMonkey' instead
  </code></pre>
  
  <p><code>ChunkyMonkey</code> is my Windows machine name and obviously <code>WindowsVistaAdmin</code> is the user that I am signed in as on this machine.</p>
  
  <p>How can I set the username to something more respectable, or, at least, more concise?</p>