updated for version 7.3.970
Problem:    Syntax highlighting can be slow.
Solution:   Include the NFA regexp engine.  Add the 'regexpengine' option to
            select which one is used. (various authors, including Ken Takata,
            Andrei Aiordachioaie, Russ Cox, Xiaozhou Liua, Ian Young)
diff --git a/src/testdir/test95.ok b/src/testdir/test95.ok
new file mode 100644
index 0000000..d135b0e
--- /dev/null
+++ b/src/testdir/test95.ok
@@ -0,0 +1,6 @@
+Results of test95:
+OK - [[:alpha:][=a=]]\+
+OK - [[=a=]]\+
+OK - [^ม ]\+
+OK -  [^ ]\+
+OK - [ม[:alpha:][=a=]]\+