#!/bin/sh

# Exercise a DFA range bug that arises only with a unibyte encoding

# for which the wide-char-to-single-byte mapping is nontrivial.

# E.g., the regexp, [C] would fail to match C in a unibyte locale like

# ru_RU.KOI8-R for any C whose wide-char representation differed from

# its single-byte equivalent.

# Copyright (C) 2011-2017 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

require_ru_RU_koi8_r

LC_ALL=ru_RU.KOI8-R

export LC_ALL

fail=0

i=128

while :; do

  in=in-$i

  octal=$(printf '%03o' $i)

  b=$(printf "\\$octal")

  echo "$b" > $in || framework_failure_

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

  compare out $in || fail=1

  test $i = 255 && break

  i=$(expr $i + 1)

done

Exit $fail