From 26daf6a03f7c44b04b3654f6bda1f4a11fbf9df1 Mon Sep 17 00:00:00 2001
From: Shenghou Ma <minux.ma@gmail.com>
Date: Wed, 29 Feb 2012 02:22:28 +0800
Subject: [PATCH] cmd/dist: force line-buffering stdout/stderr on Unix        
 If stdout and stderr are indeed the same file (not a tty), which is        
 often the case, fully-buffered stdout will make it harder to see        
 progresses, for example, ./make.bash 2>&1 | tee log

R=r, rsc
CC=golang-dev
https://golang.org/cl/5700070
---
 src/cmd/dist/unix.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/cmd/dist/unix.c b/src/cmd/dist/unix.c
index 76622a4d88..e6d82e14ef 100644
--- a/src/cmd/dist/unix.c
+++ b/src/cmd/dist/unix.c
@@ -641,6 +641,9 @@ main(int argc, char **argv)
 	Buf b;
 	struct utsname u;
 
+	setvbuf(stdout, nil, _IOLBF, 0);
+	setvbuf(stderr, nil, _IOLBF, 0);
+
 	binit(&b);
 	
 	slash = "/";