patch 7.4.2123
Problem:    No new style test for diff mode.
Solution:   Add a test.  Check that folds are in sync.
diff --git a/src/version.c b/src/version.c
index 65ec6b6..ae7b4de 100644
--- a/src/version.c
+++ b/src/version.c
@@ -764,6 +764,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2123,
+/**/
     2122,
 /**/
     2121,