#!/bin/sh
# Verify that an erroneous use of sed -i no longer leaves behind
# a temporary file.

# Copyright (C) 2015-2020 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=.}/testsuite/init.sh"; path_prepend_ ./sed
print_ver_ sed

# The input file must have at least one line.
echo > in || framework_failure_
printf 'sed: -e expression #1, char 0: no previous regular expression\n' \
  > exp || framework_failure_

# Before sed-4.3, this would create a file named sed??????
returns_ 1 sed -i s//b/ in > out 2> err || fail=1

compare /dev/null out || fail=1
compare exp err || fail=1

# Ensure that no other file has been created in this directory.
files=$(echo *)
# Ignore any potentialy existing temporary DJGPP files.
files=$(echo $files | sed "s/[ 	]*dj[0-9a-z]*[ 	]*/ /g;s/[ 	]*sp[0-9a-z]*[ 	]*/ /g;s/^[ 	]//;s/[ 	]$//")
test "$files" = "err exp in out" || fail=1

Exit $fail
