[nerbert]

If you can do the appropriate template conditionals you can use boolean $post['edited_by_mod']

with this plugin code

if($post['edit_username'] != '')
{
	$edited_by = $this->registry->db->query_first("
		SELECT CONCAT(usergroupid, ',', membergroupids) AS groups
		FROM " . TABLE_PREFIX . "user
		WHERE username = '" . $this->registry->db->escape_string(htmlspecialchars_uni($post['edit_username'])) . "'
	");
	
	$post['edited_by_mod'] = (
		in_array(5, array($edited_by['groups'])) OR
		in_array(6, array($edited_by['groups'])) OR
		in_array(7, array($edited_by['groups']))
	);
}

in hook location postbit_display_complete

It returns true (1) for moderators (group 7) admins (group 6) and super moderators (group 5)