From e613bfb7015744c25ce838b64bf8db31acff49f6 Mon Sep 17 00:00:00 2001
From: Esteban Küber <esteban@kuber.com.ar>
Date: Sun, 15 Jul 2018 12:28:42 -0700
Subject: Same change as `println` for `eprintln`

---
 src/libstd/macros.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'src/libstd')

diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs
index 7f3c8fcdd5a..527bab759b0 100644
--- a/src/libstd/macros.rs
+++ b/src/libstd/macros.rs
@@ -211,8 +211,7 @@ macro_rules! eprint {
 #[stable(feature = "eprint", since = "1.19.0")]
 macro_rules! eprintln {
     () => (eprint!("\n"));
-    ($fmt:expr) => (eprint!(concat!($fmt, "\n")));
-    ($fmt:expr, $($arg:tt)*) => (eprint!(concat!($fmt, "\n"), $($arg)*));
+    ($($arg:tt)*) => (eprint!("{}\n", format_args!($($arg)*)));
 }
 
 #[macro_export]
-- 
cgit 1.4.1-3-g733a5