1#!/bin/sh
2# Ensure extended regular expressions work in posix mode
3
4# Copyright (C) 2017-2020 Free Software Foundation, Inc.
5
6# This program is free software: you can redistribute it and/or modify
7# it under the terms of the GNU General Public License as published by
8# the Free Software Foundation, either version 3 of the License, or
9# (at your option) any later version.
10
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14# GNU General Public License for more details.
15
16# You should have received a copy of the GNU General Public License
17# along with this program.  If not, see <https://www.gnu.org/licenses/>.
18. "${srcdir=.}/testsuite/init.sh"; path_prepend_ ./sed
19print_ver_ sed
20
21printf "hi+\n" > in1 || framework_failure_
22
23printf "{hi+}\n" > exp-special || framework_failure_
24printf "h{i+}\n" > exp-literal || framework_failure_
25
26# '+' is special in ERE
27sed -E 's/(.+)/{\1}/' in1 > out0 || fail=1
28compare_ exp-special out0 || fail=1
29
30# '+' is special in ERE, even if --posix is used.
31# sed-4.4 and earlier did not treat it as special (bug#26409).
32sed --posix -E 's/(.+)/{\1}/' in1 > out1 || fail=1
33compare_ exp-special out1 || fail=1
34
35# Escape the '+' it to remove special meaning in ERE
36sed --posix -E 's/(.\+)/{\1}/' in1 > out2 || fail=1
37compare_ exp-literal out2 || fail=1
38
39# with BRE and --posix, '+' should have no special meaning
40sed --posix 's/\(.+\)/{\1}/' in1 > out3 || fail=1
41compare_ exp-literal out3 || fail=1
42
43# with BRE without --posix, '+' should have no special meaning
44sed 's/\(.+\)/{\1}/' in1 > out4 || fail=1
45compare_ exp-literal out4 || fail=1
46
47# with BRE without --posix, '\+' is special (GNU extension)
48sed 's/\(.\+\)/{\1}/' in1 > out5 || fail=1
49compare_ exp-special out5 || fail=1
50
51
52Exit $fail
53