[gollem] How do you hide files with the extension .lnk using 'filter' => '^regex$', ?

[gimili]

How do you hide files with the extension .lnk using 'filter' => '^regex$', ?

I read
 * filter: If set, all files that match the regex will be hidden in the
 *         folder view.  The regex must be in pcre syntax (See
 *         http://www.php.net/pcre).

and I searched google for examples but I still can't figure it out.

Any help appreciated.  Thanks!