Use ? in some macros

2019-02-24 21:59:44 +09:00
parent 7f19f161f2
commit 871910a2c6
10 changed files with 29 additions and 29 deletions
--- a/src/libsyntax_ext/proc_macro_server.rs
+++ b/src/libsyntax_ext/proc_macro_server.rs
@@ -69,7 +69,7 @@ impl FromInternal<(TreeAndJoint, &'_ ParseSess, &'_ mut Vec<Self>)>
        };

        macro_rules! tt {
-            ($ty:ident { $($field:ident $(: $value:expr)*),+ $(,)* }) => (
+            ($ty:ident { $($field:ident $(: $value:expr)*),+ $(,)? }) => (
                TokenTree::$ty(self::$ty {
                    $($field $(: $value)*,)*
                    span,