gistfile1.scala

class Interpreter(val settings: Settings, out: PrintWriter) {
  repl =>
  
   // 1. Request is private. I need: dependencies (usedNames?) newly defined values (boundNames?)
   // the resulting value and the error message(s) if any
   case class PublicRequest (usedNames : List[String], valueNames:List[String], extractionValue:Option[Any])

   // 2. Can't get the last request
   def lastRequest : Option[PublicRequest] =
     prevRequests.lastOption map (l =>
       PublicRequest (l.usedNames.map(_.decode), l.valueNames.map(_.decode), l.extractionValue)
       )

... // the rest of the Interpreter class

This is a quick "hack" to allow access to the internal class Request of the scala.nsc.tools.Interpreter.scala - this is needed in "advanced" scripting applications.

This does not change the existing logic at all and could easily be added, temporarily, since there's probably no overhaul in sight for these classes...