title: SASS --watch command not fully working
body: <p>I have a pretty basic SASS setup running, which includes the following folder structure:</p>
  
  <ul>
  <li>css</li>
  <li>style.css</li>
  <li>-modules
  <ul>
  <li>_all.scss</li>
  <li>_globals.scss</li>
  </ul></li>
  <li>partials
  <ul>
  <li>_base.scss</li>
  <li>_normalize.scss</li>
  <li>_styles.scss</li>
  </ul></li>
  <li>vendor
  <ul>
  <li>-empty</li>
  </ul></li>
  </ul>
  
  <p>I am telling SASS to watch the following sass --watch modules/_all.scss:style.css --style compact.</p>
  
  <p>The issue is, that one one machine a change to ANY file included in _all.scss is recorded and output properly. On another machine, completely up to date, a change to a partial file thats included in _all.scss does not record a change, and therefore no styles are output. I have to reset SASS to watch the partial _all.scss once more for the change to be recorded.</p>
  
  <p>Has anyone experienced these inconsistencies before? I'm not looking to watch an entire directory as I wish to have only a single stylesheet output...</p>
  
  <p>Both builds have the same version of sass, ruby and command line tools running.</p>