A few more fixes for undo file.  Split test in two parts so that it doesn't
fail with tiny features.
diff --git a/src/testdir/test72.ok b/src/testdir/test72.ok
new file mode 100644
index 0000000..66e7250
--- /dev/null
+++ b/src/testdir/test72.ok
@@ -0,0 +1,9 @@
+this is one line
+this is ONE Line
+one
+two
+six
+seven
+eight
+nine
+ten