std: Switch stdout/stderr to buffered by default

Similarly to #12422 which made stdin buffered by default, this commit makes the
output streams also buffered by default. Now that buffered writers will flush
their contents when they are dropped, I don't believe that there's no reason why
the output shouldn't be buffered by default, which is what you want in 90% of
cases.

As with stdin, there are new stdout_raw() and stderr_raw() functions to get
unbuffered streams to stdout/stderr.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/libsyntax/diagnostic.rs b/src/libsyntax/diagnostic.rs
index affeb86f782..cb7034a375d 100644
--- a/src/libsyntax/diagnostic.rs
+++ b/src/libsyntax/diagnostic.rs
@@ -227,8 +227,8 @@ enum Destination {
 impl EmitterWriter {
     pub fn stderr() -> EmitterWriter {
         let stderr = io::stderr();
-        if stderr.isatty() {
-            let dst = match term::Terminal::new(stderr) {
+        if stderr.get_ref().isatty() {
+            let dst = match term::Terminal::new(stderr.unwrap()) {
                 Ok(t) => Terminal(t),
                 Err(..) => Raw(~io::stderr()),
             };