title: Ace editor: customizing syntax error gutter
body: <p>Just wondering, if the syntax error gutter can be customized? Also is it possible to highlight texts which has syntax error?</p>
  
  <p>For example below I am trying to check value of <code>myString</code> against string a "chetan" but without quotes. Now this is a syntax error. Currently we display the error in gutter prior to line number. But is it possible to customize the ace editor provide inline highlight and change the color?</p>
  
  <pre><code>if myString==chetan:
    //do something
  endif 
  </code></pre>