$files = array();
// Exclude Bower and Node directories.
- $nomask = array_merge($nomask, array('node_modules', 'bower_components'));
+ $nomask = array_merge($nomask, drush_get_option_list('ignored-directories', array('node_modules', 'bower_components')));
if (is_string($dir) && is_dir($dir) && $handle = opendir($dir)) {
while (FALSE !== ($file = readdir($handle))) {