#! /bin/sh

# Exercise bugs in grep-2.13 with -i, -n and an RE of ^$ in a multi-byte locale.

#

# Copyright (C) 2012-2017 Free Software Foundation, Inc.

#

# Copying and distribution of this file, with or without modification,

# are permitted in any medium without royalty provided the copyright

# notice and this notice are preserved.

. "${srcdir=.}/init.sh"; path_prepend_ ../src

require_en_utf8_locale_

LC_ALL=en_US.UTF-8

export LC_ALL

printf 'a\n\nb\n' > in || framework_failure_

printf '2:\n' > exp || framework_failure_

printf 'a\nb\n' > in2 || framework_failure_

grep -n -i '^$' in > out || fail=1

compare exp out || fail=1

# Expect no match: with grep-2.13 this would mistakenly exit 0

grep -i '^$' in2 > out && fail=1

compare /dev/null out || fail=1

Exit $fail