patch 7.4.2219
Problem:    Recursive call to substitute gets stuck in sandbox. (Nikolai
            Pavlov)
Solution:   Handle the recursive call. (Christian Brabandt, closes #950)
            Add a test.
diff --git a/src/version.c b/src/version.c
index bae2153..505231f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -764,6 +764,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2219,
+/**/
     2218,
 /**/
     2217,