patch 7.4.792
Problem:    Can only conceal text by defining syntax items.
Solution:   Use matchadd() to define concealing. (Christian Brabandt)
diff --git a/src/testdir/Make_vms.mms b/src/testdir/Make_vms.mms
index 726c233..d8f54ad 100644
--- a/src/testdir/Make_vms.mms
+++ b/src/testdir/Make_vms.mms
@@ -114,6 +114,7 @@
 	 test_listlbr_utf8.out \
 	 test_mapping.out \
 	 test_marks.out \
+	 test_match_conceal.out \
 	 test_nested_function.out \
 	 test_options.out \
 	 test_perl.out \