mbe: treat _ as ident

1 files changed, 3 insertions, 1 deletions

diff --git a/crates/mbe/src/parser.rs b/crates/mbe/src/parser.rs
index 6b46a1673..c3fdd4040 100644
--- a/crates/mbe/src/parser.rs
+++ b/crates/mbe/src/parser.rs
@@ -101,7 +101,9 @@ fn next_op<'a>(
                     Op::Repeat { subtree, separator, kind }
                 }
                 tt::TokenTree::Leaf(leaf) => match leaf {
-                    tt::Leaf::Punct(..) => return Err(ExpandError::UnexpectedToken),
+                    tt::Leaf::Punct(_) => {
+                        return Err(ExpandError::UnexpectedToken);
+                    }
                     tt::Leaf::Ident(ident) => {
                         let name = &ident.text;
                         let kind = eat_fragment_kind(src, mode)?;