title: Grunt expand files, what patterns are acceptable in src?
body: <p>Snippet from gruntfile.js</p>
  
  <pre><code>sass: {
      compile: {
          files: [{
              expand: true,
              cwd: 'css/',
              src: ['^[^_].scss'],
              dest: '../css/',
              ext: '.css'
          }]
      }
  },
  </code></pre>
  
  <p>This should work <a href="http://rubular.com/r/qxwmGV4KdZ" rel="nofollow">according to rubular.</a></p>
  
  <p>Basically I want to compile all .scss files in the 'css' directory, unless they start with an underscore. However, that pattern doesn't match anything?</p>
  
  <p>Any ideas?</p>