tentative fix that of bug causing divergence

1 files changed, 3 insertions, 2 deletions

diff --git a/src/library/scala/xml/PrettyPrinter.scala b/src/library/scala/xml/PrettyPrinter.scala
index 73d8fb54ac..dda65f9303 100644
--- a/src/library/scala/xml/PrettyPrinter.scala
+++ b/src/library/scala/xml/PrettyPrinter.scala
@@ -60,9 +60,9 @@ class PrettyPrinter( width:Int, step:Int ) {
     if (i > tmp || i == -1) throw new BrokenException() // cannot break
 
     var last: List[Int] = Nil
-    while (i < tmp) {
+    while (i != -1 && i < tmp) {
       last = i::last
-      i = s.indexOf(' ', i)
+      i = s.indexOf(' ', i+1)
     }
     var res: List[Item] = Nil
     while (Nil != last) try {
@@ -70,6 +70,7 @@ class PrettyPrinter( width:Int, step:Int ) {
       cur = ind
       res = b :: Break :: cut(s.substring(last.head, s.length), ind)
        // backtrack
+      last = last.tail
     } catch {
       case _:BrokenException => last = last.tail
     }