1 files changed, 2 insertions, 0 deletions
diff --git a/mu.arc.t b/mu.arc.t
index da30bd21..a9b67597 100644
--- a/mu.arc.t
+++ b/mu.arc.t
@@ -3311,6 +3311,8 @@
             (tokenize-arg 'a:b/1:d))
 (assert:iso '<-
             (tokenize-arg '<-))
+(assert:iso '_
+            (tokenize-arg '_))
 
 ; support labels
 (assert:iso '((((default-scope scope-address)) <- ((new)) ((scope literal)) ((30 literal)))