Implement {:s} for ~str and @str as well

Author: alexcrichton

src/libstd/fmt/mod.rs

@@ -726,9 +726,9 @@ impl Bool for bool {
     }
 }
 
-impl<'self> String for &'self str {
-    fn fmt(s: & &'self str, f: &mut Formatter) {
-        f.pad(*s);
+impl<'self, T: str::Str> String for T {
+    fn fmt(s: &T, f: &mut Formatter) {
+        f.pad(s.as_slice());
     }
 }
 

src/test/run-pass/ifmt.rs

@@ -45,6 +45,8 @@ pub fn main() {
     t!(ifmt!("{:x}", 10u), "a");
     t!(ifmt!("{:X}", 10u), "A");
     t!(ifmt!("{:s}", "foo"), "foo");
+    t!(ifmt!("{:s}", ~"foo"), "foo");
+    t!(ifmt!("{:s}", @"foo"), "foo");
     t!(ifmt!("{:p}", 0x1234 as *int), "0x1234");
     t!(ifmt!("{:p}", 0x1234 as *mut int), "0x1234");
     t!(ifmt!("{:d}", A), "aloha");