#!/bin/sh
# Check that GREP_COLOR elicits a warning.

# Copyright 2022-2023 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 <https://www.gnu.org/licenses/>.

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

fail=0
unset GREP_COLORS
unset GREP_COLOR
LC_ALL=C
export LC_ALL

printf 'x\n\n' >in || framework_failure_
printf '%s\n' \
  "grep: warning: GREP_COLOR='36' is deprecated; use GREP_COLORS='mt=36'" \
  >exp.err || framework_failure_

GREP_COLORS='mt=36:ln=35' grep --color=always . in >exp 2>err || fail=1
compare /dev/null err || fail=1
GREP_COLOR='36' GREP_COLORS='ln=35' grep --color=always . in >out 2>err \
  || fail=1
compare exp out || fail=1
compare exp.err err || fail=1

GREP_COLORS='mt=36' grep --color=always . in >exp 2>err || fail=1
compare /dev/null err || fail=1
GREP_COLOR='36' grep --color=always . in >out 2>err || fail=1
compare exp out || fail=1
compare exp.err err || fail=1

GREP_COLORS='ln=35' grep --color=always . in >out 2>err || fail=1
compare /dev/null err || fail=1

Exit $fail