updated for version 7.3.1033
Problem: "\1" .. "\9" are not supported in the new regexp engine.
Solution: Implement them. Add a few more tests.
diff --git a/src/testdir/test64.ok b/src/testdir/test64.ok
index 7ff9b29..abad49f 100644
--- a/src/testdir/test64.ok
+++ b/src/testdir/test64.ok
@@ -713,6 +713,12 @@
OK 0 - \<goo\|go
OK 1 - \<goo\|go
OK 2 - \<goo\|go
+OK 0 - \(\i\+\) \1
+OK 1 - \(\i\+\) \1
+OK 2 - \(\i\+\) \1
+OK 0 - \(a\)\(b\)\(c\)\(dd\)\(e\)\(f\)\(g\)\(h\)\(i\)\1\2\3\4\5\6\7\8\9
+OK 1 - \(a\)\(b\)\(c\)\(dd\)\(e\)\(f\)\(g\)\(h\)\(i\)\1\2\3\4\5\6\7\8\9
+OK 2 - \(a\)\(b\)\(c\)\(dd\)\(e\)\(f\)\(g\)\(h\)\(i\)\1\2\3\4\5\6\7\8\9
192.168.0.1
192.168.0.1
192.168.0.1