diff --git a/src/testdir/test64.ok b/src/testdir/test64.ok
index fa31c8a..d1f4113 100644
--- a/src/testdir/test64.ok
+++ b/src/testdir/test64.ok
@@ -866,6 +866,15 @@
 OK 0 - ^.\(.\).\_..\1.
 OK 1 - ^.\(.\).\_..\1.
 OK 2 - ^.\(.\).\_..\1.
+OK 0 - ^.*\.\(.*\)/.\+\(\1\)\@<!$
+OK 1 - ^.*\.\(.*\)/.\+\(\1\)\@<!$
+OK 2 - ^.*\.\(.*\)/.\+\(\1\)\@<!$
+OK 0 - ^.*\.\(.*\)/.\+\(\1\)\@<!$
+OK 1 - ^.*\.\(.*\)/.\+\(\1\)\@<!$
+OK 2 - ^.*\.\(.*\)/.\+\(\1\)\@<!$
+OK 0 - ^.*\.\(.*\)/.\+\(\1\)\@<=$
+OK 1 - ^.*\.\(.*\)/.\+\(\1\)\@<=$
+OK 2 - ^.*\.\(.*\)/.\+\(\1\)\@<=$
 OK 0 - <\@<=span.
 OK 1 - <\@<=span.
 OK 2 - <\@<=span.