Same change as println for eprintln

estebank · estebank · commit d9450a6028d2 · 2018-07-15T12:28:42.000-07:00
diff --git 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]

Original file line number	Diff line number	Diff line change
`@@ -211,8 +211,7 @@ macro_rules! eprint {`
`211`	`211`	`#[stable(feature = "eprint", since = "1.19.0")]`
`212`	`212`	`macro_rules! eprintln {`
`213`	`213`	`() => (eprint!("\n"));`
`214`		`- ($fmt:expr) => (eprint!(concat!($fmt, "\n")));`
`215`		`- ($fmt:expr, $($arg:tt)) => (eprint!(concat!($fmt, "\n"), $($arg)));`
	`214`	`+ ($($arg:tt)) => (eprint!("{}\n", format_args!($($arg))));`
`216`	`215`	`}`
`217`	`216`
`218`	`217`	`#[macro_export]`