More cleanup.

main/Build.scala

@@ -140,7 +140,7 @@ object EvaluateConfigurations
 		}
 		loader => {
 			val coord = SourceCoord(name, line + 1)
-			result.getValue(loader).asInstanceOf[Project.SettingsDefinition].settings map (_ setPos coord)
+			result.getValue(loader).asInstanceOf[Project.SettingsDefinition].settings map (_ withPos coord)
 		}
 	}
 	private[this] def isSpace = (c: Char) => Character isWhitespace c

main/Project.scala

@@ -274,14 +274,15 @@ object Project extends Init[Scope] with ProjectExtra
 		}
 		val comp = compiled(structure.settings, actual)(structure.delegates, structure.scopeLocal, display)
 		val definedAt = comp get scoped map { c =>
-			val posDefined = c.settings filter (_.pos ne NoPosition)
+			def fmt(s: Setting[_]) = s.pos match {
+				case SourceCoord(fileName, line) => Some(fileName + ":" + line)
+				case NoPosition => None
+			}
+			val posDefined = c.settings.map(fmt).flatten
 			if (posDefined.size > 0) {
 				val header = if (posDefined.size == c.settings.size) "Defined at:" else
 					"Some of the defining occurrences:"
-				def fmt(s: Setting[_]) = s.pos match {
-					case SourceCoord(fileName, line) => fileName + ":" + line
-				}
-				header + (posDefined map fmt mkString ("\n\t", "\n\t", "\n"))
+				header + (posDefined mkString ("\n\t", "\n\t", "\n"))
 			} else ""
     } getOrElse ""
 

util/collection/Settings.scala

@@ -255,13 +255,13 @@ trait Init[Scope]
 		def mapKey(g: MapScoped): Setting[T] = new Setting(g(key), init, pos)
 		def mapInit(f: (ScopedKey[T], T) => T): Setting[T] = new Setting(key, init(t => f(key,t)), pos)
 		def mapConstant(g: MapConstant): Setting[T] = new Setting(key, init mapConstant g, pos)
-		def setPos(pos: SourceCoord) = new Setting(key, init, pos)
+		def withPos(pos: SourceCoord) = new Setting(key, init, pos)
 		override def toString = "setting(" + key + ") at " + pos
 	}
 
 	sealed trait SourcePosition
 	case object NoPosition extends SourcePosition
-	case class SourceCoord(fileName: String, line: Int) extends SourcePosition
+	final case class SourceCoord(fileName: String, line: Int) extends SourcePosition
 
 		// mainly for reducing generated class count
 	private[this] def validateReferencedT(g: ValidateRef) =