From bc70095df2ea1bc4338ea7331d44b916e0c82258 Mon Sep 17 00:00:00 2001
From: Pádraig Brady <P@draigBrady.com>
Date: Sat, 22 Jun 2013 03:37:51 +0100
Subject: stdbuf: make it mandatory to specify a buffering option

This is consistent with the documented interface and
avoids any ambiguity in a user thinking that stdbuf without options
might reset to a "standard" buffering setup.

* src/stdbuf.c (set_libstdbuf_options): Indicate with the return value
whether any env variables were actually set.
(main): Fail unless some env variables were set.
* tests/misc/stdbuf.sh: Ensure this constraint is enforced.
* NEWS: Mention the small change in behavior.
---
 NEWS | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'NEWS')

diff --git a/NEWS b/NEWS
index aff6a4250..b728ec007 100644
--- a/NEWS
+++ b/NEWS
@@ -41,6 +41,11 @@ GNU coreutils NEWS                                    -*- outline -*-
   csplit accepts a new option: --suppressed-matched, to elide the lines
   used to identify the split points.
 
+** Changes in behavior
+
+  stdbuf now requires at least one buffering mode option to be specified,
+  as per the documented interface.
+
 ** Improvements
 
   stat and tail work better with EFIVARFS, EXOFS, F2FS, SNFS and UBIFS.
-- 
cgit v1.2.3-70-g09d2