1#!/bin/sh
2# Ensure that zgrep -15 works.  Before gzip-1.5, it would fail.
3
4# Copyright (C) 2012-2016 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 <http://www.gnu.org/licenses/>.
18# limit so don't run it by default.
19
20. "${srcdir=.}/init.sh"; path_prepend_ .
21
22# A limited replacement for seq: handle 1 or 2 args; increment must be 1
23seq()
24{
25  case $# in
26    1) start=1  final=$1;;
27    2) start=$1 final=$2;;
28    *) echo you lose 1>&2; exit 1;;
29  esac
30  awk 'BEGIN{for(i='$start';i<='$final';i++) print i}' < /dev/null
31}
32
33seq 40 > in || framework_failure_
34gzip < in > in.gz || framework_failure_
35seq 2 32 > exp || framework_failure_
36
37: ${GREP=grep}
38$GREP -15 17 - < in > out && compare exp out || {
39  echo >&2 "$0: $GREP does not support context options; skipping this test"
40  exit 77
41}
42
43fail=0
44zgrep -15 17 - < in.gz > out || fail=1
45compare exp out || fail=1
46
47Exit $fail
48