Events default host regular expression doesn't work

[vanderhallenf]

Hi,

The events are not displayed on the graphs when the host regular expression "" is used (the default). This should be ".". I've tried it by modifying api/events.php:

$grid = isset($_REQUEST['grid']) ? sanitize($_REQUEST['grid']) : ".*";
$cluster = isset($_REQUEST['cluster']) ? sanitize($_REQUEST['cluster']) : ".*";

Is this correct, or could there be something else wrong on my setup that breaks the host regex? In other words, should the "*'" expression work?

Regards,
Frank