From f942d10e8010918c677b40f821e504d87f057ead Mon Sep 17 00:00:00 2001
From: Edwin Cheng <edwin0cheng@gmail.com>
Date: Sun, 20 Dec 2020 17:13:40 +0800
Subject: Use pattern_single instead of pattern in mbe pat

---
 crates/mbe/src/tests.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'crates/mbe')

diff --git a/crates/mbe/src/tests.rs b/crates/mbe/src/tests.rs
index f10e7a9b6..451fa1456 100644
--- a/crates/mbe/src/tests.rs
+++ b/crates/mbe/src/tests.rs
@@ -1003,6 +1003,18 @@ fn test_underscore() {
     .assert_expand_items(r#"foo! { => }"#, r#"0"#);
 }
 
+#[test]
+fn test_vertical_bar_with_pat() {
+    parse_macro(
+        r#"
+            macro_rules! foo {
+                 (| $pat:pat | ) => { 0 }
+            }
+    "#,
+    )
+    .assert_expand_items(r#"foo! { | x | }"#, r#"0"#);
+}
+
 #[test]
 fn test_lifetime() {
     parse_macro(
-- 
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