From 28c635adb2d06818e66d5848e91d3a115259d168 Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Sat, 22 May 1999 02:41:39 +0000
Subject: (use-nl): New test from Paul Eggert.

---
 tests/sort/Test.pm | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'tests/sort')

diff --git a/tests/sort/Test.pm b/tests/sort/Test.pm
index a91f49014..b48031e29 100755
--- a/tests/sort/Test.pm
+++ b/tests/sort/Test.pm
@@ -214,6 +214,29 @@ my @tv = (
 # (i.e., not when configured with --disable-nls).
 ["nul-nls", '', "\0b\n\0a\n", "\0a\n\0b\n", 0],
 
+# Paul Eggert wrote:
+# I tested the revised `sort' against Solaris `sort', and found a
+# discrepancy that turns out to be a longstanding bug in GNU sort.
+# POSIX.2 specifies that a newline is part of the input line, and should
+# be significant during comparison; but with GNU sort the newline is
+# insignificant.  Here is an example of the bug:
+#
+# 	$ od -c t
+# 	0000000  \n  \t  \n
+# 	0000003
+# 	$ sort t | od -c
+# 	0000000  \n  \t  \n
+# 	0000003
+#
+# The correct output of the latter command should be
+#
+# 	0000000  \t  \n  \n
+# 	0000003
+#
+# because \t comes before \n in the collating sequence, and the trailing
+# \n's are part of the input line.
+["use-nl", '', "\n\t\n", "\t\n\n", 0],
+
 );
 
 sub test_vector
-- 
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