updated for version 7.3.1217
Problem:    New regexp engine: Can't handle \%[[ao]]. (Yukihiro Nakadaira)
Solution:   Support nested atoms inside \%[].
diff --git a/src/version.c b/src/version.c
index e1c4ebc..86f8a85 100644
--- a/src/version.c
+++ b/src/version.c
@@ -729,6 +729,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1217,
+/**/
     1216,
 /**/
     1215,