patch 7.4.1689
Problem:    Ruby interface has inconsistent coding style.
Solution:   Fix the coding style. (Ken Takata)
diff --git a/src/version.c b/src/version.c
index c7e1639..8d32e2a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -749,6 +749,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1689,
+/**/
     1688,
 /**/
     1687,