title: False positive "Undefined error" when compiling scss in Sublime Text 2
body: <p>I import partials into a <code>global.scss</code> file with: <code>@import "userbar;"</code>.  The userbar file is named <code>_userbar.scss</code>.</p>
  
  <p>Within <code>_userbar.scss</code>, I have this: </p>
  
  <pre><code>@import media all and (min-width: $break-narrow)
  </code></pre>
  
  <p><code>$break-narrow</code> is defined in <code>_vars.scss</code>, which is imported at the very top of <code>global.scss</code>.</p>
  
  <p>When editing <code>_userbar.scss</code> in ST2 I get the error <code>Sass::SyntaxError: Undefined variable: $break-narrow.</code>.  Everything builds fine - my generated <code>global.css</code> has the changes that I would expect it to have - but this error is annoying.</p>
  
  <p>I am using <a href="https://github.com/jaumefontal/SASS-Build-SublimeText2" rel="nofollow">Sass Build</a> installed via the Package manager</p>