title: Undoing branch creation in Mercurial
body: <p>How can I undo the creation of a branch in Mercurial? For example, if I issue the command</p>
  
  <pre><code>hg branch newbranch
  </code></pre>
  
  <p>How can I delete this branch if I decide I entered the wrong name? I'm guessing this must be pretty simple to do, but I have yet to figure it out. Thanks!</p>