From 3d8b96d58d74d775e34de8d19a03db5380eb8f2c Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Mon, 23 Aug 2010 02:39:47 +0200
Subject: grep: fix -o match with empty string (suggested by Colin Watson
 <cjwatson@ubuntu.com>)

function                                             old     new   delta
grep_file                                           1216    1251     +35

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---
 testsuite/grep.tests | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'testsuite/grep.tests')

diff --git a/testsuite/grep.tests b/testsuite/grep.tests
index 520a1840f..ffce033e6 100755
--- a/testsuite/grep.tests
+++ b/testsuite/grep.tests
@@ -98,5 +98,9 @@ testing "grep -o does not loop forever" \
 	'grep -o "[^/]*$"' \
 	"test\n" \
 	"" "/var/test\n"
+testing "grep -o does not loop forever on zero-length match" \
+	'grep -o "" | head -n1' \
+	"" \
+	"" "test\n"
 
 exit $FAILCOUNT
-- 
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