updated for version 7.3.999
Problem:    New regexp engine sets curbuf temporarily.
Solution:   Use reg_buf instead, like the old engine.
diff --git a/src/version.c b/src/version.c
index 5466674..ae257e9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -729,6 +729,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    999,
+/**/
     998,
 /**/
     997,