regex fixes

clickat.php

@@ -17,7 +17,7 @@ function hook_clickat_render_linklist($data)
         '/([^\S]+)@([\w]+)/'              => ' <a href="https://twitter.com/\2">&commat;\2</a>'
     );
     foreach ($data['links'] as &$value) {
-        if (strpos($value['description'], '@') !== false) {
+        if (strpos($value['description'], ' @') !== false) {
             foreach($patterns as $nic => $link) {
                 $value['description'] = preg_replace($nic, $link, $value['description']);
             }