WP_Query, multiple 'orderby' values glitch

[racura]

According to the documentation, WP_Query argument 'orderby' allows for multiple values, but it doesn't work.

Looking in the code i found out why, the 'order' is only being applied to the last item in the list.

So for instance:

('orderby' => 'title menu_order', 'order' => 'DESC')

Will end up as

"ORDER BY $wpdb->posts.menu_order, $wpdb->posts.post_menu_order DESC"

To fix (I hope), the following needs to be done to query.php line 2387

$orderby_array[] = $orderby.' '.$q['order'];

[racura]

Sorry, the code fix should be:

    $orderby_array[] = $orderby.' '.$q['order'];

And remove lines 2393 and 2394

[drozdz]

Duplicate of #17065.