From: Shenghou Ma <minux.ma@gmail.com>
Date: Tue, 28 Feb 2012 18:22:28 +0000 (+0800)
Subject: cmd/dist: force line-buffering stdout/stderr on Unix
X-Git-Tag: weekly.2012-03-04~108
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=26daf6a03f7c44b04b3654f6bda1f4a11fbf9df1;p=gostls13.git

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
---

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 = "/";