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#!/bin/sh
# test conv=lcase and conv=ucase
# Copyright (C) 2025-2026 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/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ dd
printf 'abcdefghijklmnopqrstuvwxyz\n' > input-lower || framework_failure_
printf 'ABCDEFGHIJKLMNOPQRSTUVWXYZ\n' > input-upper || framework_failure_
# Check the output when all input characters are already the correct case.
dd if=input-lower of=output-lower conv=lcase || fail=1
cmp input-lower output-lower || fail=1
dd if=input-upper of=output-upper conv=ucase || fail=1
cmp input-upper output-upper || fail=1
# Check the output when all input characters need case conversion.
dd if=input-upper of=output-lower conv=lcase || fail=1
cmp input-lower output-lower || fail=1
dd if=input-lower of=output-upper conv=ucase || fail=1
cmp input-upper output-upper || fail=1
export LC_ALL=en_US.iso8859-1 # only lowercase form works on macOS 10.15.7
if test "$(locale charmap 2>/dev/null | sed 's/iso/ISO-/')" = ISO-8859-1; then
# Case conversion should work on all single byte locales.
# Check it with é and É in ISO 8859-1.
printf '\351\n' > input-lower
printf '\311\n' > input-upper
# Check the output when all input characters are already the correct case.
dd if=input-lower of=output-lower conv=lcase || fail=1
cmp input-lower output-lower || fail=1
dd if=input-upper of=output-upper conv=ucase || fail=1
cmp input-upper output-upper || fail=1
# Check the output when all input characters need case conversion.
dd if=input-upper of=output-lower conv=lcase || fail=1
cmp input-lower output-lower || fail=1
dd if=input-lower of=output-upper conv=ucase || fail=1
cmp input-upper output-upper || fail=1
fi
Exit $fail
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