#!/bin/sh

# Check various bracket expressions in the POSIX locale.

# Copyright 2014-2017 Free Software Foundation, Inc.

# This program is free software: you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

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

LC_ALL=C

export LC_ALL

fail=0

echo a >in || framework_failure_

for bracketed in '[.a.]' '[.a.]-a' 'a-[.a.]' '[.a.]-[.a.]' \

    '[=a=]' '[:alpha:]' 'a-a[.-.]--'; do

  grep "[$bracketed]" in >out || fail=1

  compare in out || fail=1

  grep "[^$bracketed]" in >out

  test $? -eq 1 || fail=1

  compare /dev/null out || fail=1

done

Exit $fail