updated for version 7.4.229
Problem:    Using ":let" for listing variables and the second one is a curly
            braces expression may fail.
Solution:   Check for an "=" in a better way. (ZyX)
diff --git a/src/testdir/test104.ok b/src/testdir/test104.ok
index 5c16509..5fb2094 100644
--- a/src/testdir/test104.ok
+++ b/src/testdir/test104.ok
@@ -1,2 +1,13 @@
 Results of test104:
 OK: function('tr')
+OK:
+  a                     #1
+  b                     #2
+OK:
+  b                     #2
+OK:
+  b                     #2
+  a                     #1
+OK:
+  a                     #1
+  b                     #2