Allow `,` to delimit macro 2.0 rules

1 files changed, 15 insertions, 0 deletions

diff --git a/crates/mbe/src/tests/expand.rs b/crates/mbe/src/tests/expand.rs
index 8951f3813..e02d038b6 100644
--- a/crates/mbe/src/tests/expand.rs
+++ b/crates/mbe/src/tests/expand.rs
@@ -663,6 +663,21 @@ macro foo {
 }
 
 #[test]
+fn test_macro_2_0_panic_2015() {
+    parse_macro2(
+        r#"
+macro panic_2015 {
+    () => (
+    ),
+    (bar) => (
+    ),
+}
+"#,
+    )
+    .assert_expand_items("panic_2015!(bar);", "");
+}
+
+#[test]
 fn test_path() {
     parse_macro(
         r#"