--- a/Spiral.scala	Wed Mar 13 13:33:54 2019 +0000
+++ b/Spiral.scala	Wed Mar 13 15:27:09 2019 +0000
@@ -123,18 +123,7 @@
     }
   }
   val arr_of_size = ListBuffer.empty[Int]
-  def spill(r: Rexp, or: Rexp): Set[Rexp] = {
-    if(r == or) 
-      Set(r)
-    else{
-      r match {
-          case ALTS(rs) => rs.flatMap(r1 => spill(r1, or)).toSet
-          case SEQ(ALTS(rs), r3) => rs.flatMap(r1 => spill(r1, or).map(a => if(a == ONE) r3 else SEQ(a, r3)) ).toSet
-          case ZERO => Set()
-          case r => Set(r)
-      }
-    }
-  }
+
   def pC(r: Rexp): Set[Rexp] = {//PD's companion
     r match {
       case SEQ(r1, r2) => pC(r2)
@@ -143,8 +132,6 @@
       case r => Set()
     }
   }
-
-  def aspill(ar: ARexp, or: Rexp): Set[Rexp] = spill(erase(ar), or)
   def illustration(r: Rexp, s: String){
     var i_like_imperative_style = internalise(r)
     val all_chars = s.toList