From a4b473226bd185e6a016b175bdee22901fafd7ce Mon Sep 17 00:00:00 2001
From: Jeff Muizelaar <jrmuizel@gmail.com>
Date: Mon, 4 Feb 2019 20:18:53 -0500
Subject: mbe: Ensure repetition separator matches

---
 crates/ra_mbe/src/lib.rs | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'crates/ra_mbe/src/lib.rs')

diff --git a/crates/ra_mbe/src/lib.rs b/crates/ra_mbe/src/lib.rs
index 6f719acbf..2c8ad4429 100644
--- a/crates/ra_mbe/src/lib.rs
+++ b/crates/ra_mbe/src/lib.rs
@@ -256,4 +256,28 @@ impl_froms!(TokenTree: Leaf, Subtree);
         assert_expansion(&rules, "foo! { eggs Baz }", "struct Baz ;");
     }
 
+    #[test]
+    fn test_match_group_pattern_by_separator_token() {
+        let rules = create_rules(
+            r#"
+        macro_rules! foo {
+            ($ ($ i:ident),*) => ($ (
+                mod $ i {}
+            )*);
+            ($ ($ i:ident)#*) => ($ (
+                fn $ i() {}
+            )*);
+            ($ i:ident ,# $ j:ident) => (
+                struct $ i;
+                struct $ j;
+            )
+        }
+"#,
+        );
+
+        assert_expansion(&rules, "foo! { foo, bar }", "mod foo {} mod bar {}");
+        assert_expansion(&rules, "foo! { foo# bar }", "fn foo () {} fn bar () {}");
+        assert_expansion(&rules, "foo! { Foo,# Bar }", "struct Foo ; struct Bar ;");
+    }
+
 }
-- 
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