title: Highlighting tabs in ace
body: <p>I want to be able to highlight(or style) the tabs in ace. </p>
  
  <p>I currently have this regex which does highlight the last tab or spaces; but I want it to highlight all tabs and no spaces.</p>
  
  <p><a href="https://i.stack.imgur.com/8KePt.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8KePt.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/luGd0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/luGd0.png" alt="enter image description here"></a></p>
  
  <p>But. The code below doesn't highlight any tabs at all.</p>
  
  <p><a href="https://i.stack.imgur.com/A729F.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/A729F.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/QrWIO.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QrWIO.png" alt="enter image description here"></a></p>
  
  <p>Any help would be greatly appreciated. Thanks.</p>
  
  <p>Edit:
  I have added images to show what the output looks like.</p>