title: How can to use fn:contains case-insensitive in JSL EL?
body: <p>I trying to find out if one string contains another. But, unfortunately, <code>fn:contains</code> function is case-sensitive. Are there are any ways to make it case-insensitive?</p>
  
  <p>I tried to put both into one case:</p>
  
  <pre><code>fn:contains(car.color.toLowerCase(), smartBean.txt.toLowerCase()) ? 'true' : 'false'
  </code></pre>
  
  <p>But it didn't work due to method's brackets. I also can't use <code>f:to-upper</code> inside <code>f:contains</code> function.</p>