updated for version 7.4b.002
Problem:    Crash searching for \%(\%(\|\d\|-\|\.\)*\|\*\). (Marcin
            Szamotulski)  Also for \(\)*.
Solution:   Do add a state for opening parenthesis, so that we can check if it
            was added before at the same position.
diff --git a/src/testdir/test64.ok b/src/testdir/test64.ok
index d08227f..c778e9e 100644
--- a/src/testdir/test64.ok
+++ b/src/testdir/test64.ok
@@ -776,6 +776,9 @@
 OK 0 - [ ]\@!\p\%([ ]\@!\p\)*:
 OK 1 - [ ]\@!\p\%([ ]\@!\p\)*:
 OK 2 - [ ]\@!\p\%([ ]\@!\p\)*:
+OK 0 - [ ]\@!\p\([ ]\@!\p\)*:
+OK 1 - [ ]\@!\p\([ ]\@!\p\)*:
+OK 2 - [ ]\@!\p\([ ]\@!\p\)*:
 OK 0 - m\k\+_\@=\%(_\@!\k\)\@<=\k\+e
 OK 1 - m\k\+_\@=\%(_\@!\k\)\@<=\k\+e
 OK 2 - m\k\+_\@=\%(_\@!\k\)\@<=\k\+e