title: How to add a custom file extension that has a dot (blade.php) in NetBeans?
body: <p>I need to assign a custom extension to be recognized as a twig file in netbeans ('blade.php' as 'twig' file and give me syntax highlighting and code completion appropriately). The problem with using the File association option (in <code>Tools &gt; Options &gt; Miscellaneous &gt; Files</code>) 
  is that it won't let me add '.' in extension like blade.php, it works with single worded extensions like php, html, css etc.</p>
  
  <p>Will be grateful if anybody can help me with this!</p>