From bd4119f9654eda89e359234a08b1ac4fae53287c Mon Sep 17 00:00:00 2001
From: Corey Richardson <corey@octayn.net>
Date: Tue, 6 Jan 2015 18:46:37 -0500
Subject: [PATCH] Minor fallout/update FOLLOW sets

---
 src/libcore/macros.rs               |  8 ++++----
 src/libstd/rt/macros.rs             | 16 ++++++++++++----
 src/libsyntax/ext/tt/macro_rules.rs |  4 ++--
 3 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/src/libcore/macros.rs b/src/libcore/macros.rs
index 14e0be2cf166a..fcd93ad4a02ae 100644
--- a/src/libcore/macros.rs
+++ b/src/libcore/macros.rs
@@ -186,12 +186,12 @@ macro_rules! write {
 #[macro_export]
 #[stable]
 macro_rules! writeln {
-    ($dst:expr, $fmt:expr, $($arg:tt)*) => (
-        write!($dst, concat!($fmt, "\n") $($arg)*)
-    );
     ($dst:expr, $fmt:expr) => (
         write!($dst, concat!($fmt, "\n"))
-    )
+    );
+    ($dst:expr, $fmt:expr, $($arg:expr),*) => (
+        write!($dst, concat!($fmt, "\n"), $($arg,)*)
+    );
 }
 
 /// A utility macro for indicating unreachable code.
diff --git a/src/libstd/rt/macros.rs b/src/libstd/rt/macros.rs
index bbc96d0b19f12..1e3ab6d34dab9 100644
--- a/src/libstd/rt/macros.rs
+++ b/src/libstd/rt/macros.rs
@@ -14,16 +14,24 @@
 //! they aren't defined anywhere outside of the `rt` module.
 
 macro_rules! rterrln {
-    ($fmt:expr $($arg:tt)*) => ( {
-        ::rt::util::dumb_print(format_args!(concat!($fmt, "\n") $($arg)*))
+    ($fmt:expr) => ( {
+        ::rt::util::dumb_print(format_args!(concat!($fmt, "\n")))
+    } );
+    ($fmt:expr, $($arg:expr),*) => ( {
+        ::rt::util::dumb_print(format_args!(concat!($fmt, "\n"), $($arg)*))
     } )
 }
 
 // Some basic logging. Enabled by passing `--cfg rtdebug` to the libstd build.
 macro_rules! rtdebug {
-    ($($arg:tt)*) => ( {
+    ($arg:expr) => ( {
         if cfg!(rtdebug) {
-            rterrln!($($arg)*)
+            rterrln!($arg)
+        }
+    } );
+    ($str:expr, $($arg:expr),*) => ( {
+        if cfg!(rtdebug) {
+            rterrln!($str, $($arg)*)
         }
     })
 }
diff --git a/src/libsyntax/ext/tt/macro_rules.rs b/src/libsyntax/ext/tt/macro_rules.rs
index 9e1b18ad18a85..6a064ec131356 100644
--- a/src/libsyntax/ext/tt/macro_rules.rs
+++ b/src/libsyntax/ext/tt/macro_rules.rs
@@ -422,7 +422,7 @@ fn is_in_follow(cx: &ExtCtxt, tok: &Token, frag: &str) -> bool {
         },
         "stmt" | "expr"  => {
             match *tok {
-                Comma | Semi => true,
+                FatArrow | Comma | Semi => true,
                 _ => false
             }
         },
@@ -434,7 +434,7 @@ fn is_in_follow(cx: &ExtCtxt, tok: &Token, frag: &str) -> bool {
         },
         "path" | "ty" => {
             match *tok {
-                Comma | RArrow | Colon | Eq | Gt => true,
+                Comma | FatArrow | Colon | Eq | Gt => true,
                 Ident(i, _) if i.as_str() == "as" => true,
                 _ => false
             }