title: ACE editor autocompletion keywords in upper case
body: <p>I have an ACE editor with a custom highlight mode, based on sql mode, and all is working fine, but I am defining keywords in upper case, and when autocompleter shows the available options, all of them are in lower case.</p>
  
  <p>I have checked the old sql mode (before my modifications) and the behaviour is exactly the same.</p>
  
  <p>Is there any way of converting this options to upper case?</p>
  
  <p>I have review this <a href="https://stackoverflow.com/questions/29753185/ace-editor-auto-completion">question</a>, but I have been unable to find a way to do it.
  I have also tried to remove all <code>toLowerCase()</code> functions into <code>ext-language-tools.js</code>, but still showing options in lower case. </p>
  
  <p>Thank you!</p>