title: Shortcoming of -a Switch with git commit
body: <p><code>git commit -a -m 'blabla'</code></p>
  
  <p>I have noticed that <code>-a</code> switch does sometimes not add all files or folders like it does with </p>
  
  <p><code>git add . --all</code></p>
  
  <p>Can anybody confirm this?</p>