Quickform Email Rule doesn't allow First character to be upper case

The quickform Email rule is missing "A-Z" in the first part of the expression: 216,217c216,217 < 'email' =>array('regex', '/^[a-z0-9\._-]+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/'), < 'emailorblank' =>array('regex', '/(^$)|(^[a-z0-9\._-]+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$)/'), --- > 'email' =>array('regex', > '/^[a-zA-Z0-9\._-]+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$/'), > 'emailorblank' =>array('regex', > '/(^$)|(^[a-zA-Z0-9\._-]+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$)/'),