auto merge of #12248 : alexcrichton/rust/rollup, r=alexcrichton

This passed `make check` locally, so hopefully it passes on bors!

1 files changed, 12 insertions, 1 deletions

diff --git a/src/libstd/ascii.rs b/src/libstd/ascii.rs
index 7965127007c..651d364dd1b 100644
--- a/src/libstd/ascii.rs
+++ b/src/libstd/ascii.rs
@@ -17,6 +17,7 @@ use str::StrSlice;
 use str::OwnedStr;
 use container::Container;
 use cast;
+use fmt;
 use iter::Iterator;
 use vec::{ImmutableVector, MutableVector, Vector};
 use to_bytes::IterBytes;
@@ -134,6 +135,12 @@ impl ToStr for Ascii {
     }
 }
 
+impl<'a> fmt::Show for Ascii {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        (self.chr as char).fmt(f)
+    }
+}
+
 /// Trait for converting into an ascii type.
 pub trait AsciiCast<T> {
     /// Convert to an ascii type, fail on non-ASCII input.
@@ -698,5 +705,9 @@ mod tests {
         assert_eq!(s, ~"t");
     }
 
-
+    #[test]
+    fn test_show() {
+        let c = Ascii { chr: 't' as u8 };
+        assert_eq!(format!("{}", c), ~"t");
+    }
 }