From the list:

Hi,

I have been having trouble reading a list of HTTP parameters with the
same name that may or may not exist. If I call S.params("nn") and "nn"
doesn't exist, it throws a NoSuchElementException: "key not found". I
was expecting an empty List.

The code for S.params is

def params(n: String): List[String] = request.map(_.params(n)).openOr
(Nil)

Shouldn't it be something like:

def params(n: String): List[String] = request.map(_.params.getOrElse
(n,Nil)).openOr(Nil)