title: Uglify-JS Error: Unexpected character '' when concatenating then minifying select2
body: <p>I am concatenting <a href="http://ivaynberg.github.com/select2/" rel="noreferrer">select2</a> to my other javascript files like so:</p>
  
  <pre><code>cat scripts/jquery-timeago.js scripts/jquery-autosize.js scripts/select2.js &gt; public/vendors.js
  uglifyjs -nc -o public/vendors.min.js public/vendors.js
  </code></pre>
  
  <p>However, I found an issue where there would be an empty whitespace character prepended right before <code>select2</code> only after concatenation, which then causes a parsing error in UglifyJS. If I go to the beginning of where <code>select2</code> starts in the concatenated file and press backspace, an empty character is deleted and minification works fine. </p>
  
  <p>What is going on? How can I fix this?</p>