# Ensure that zgrep -f - works like grep -f -
# Before gzip-1.4, it would fail.
-# Copyright (C) 2009-2010 Free Software Foundation, Inc.
+# Copyright (C) 2009-2018 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
# 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/>.
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
# limit so don't run it by default.
-if test "$VERBOSE" = yes; then
- set -x
- zgrep --version
-fi
-
-: ${srcdir=.}
-. "$srcdir/tests/init.sh"; path_prepend_ .
-
-echo needle > n || framework_failure
-echo needle > haystack || framework_failure
-gzip haystack || framework_failure
+. "${srcdir=.}/init.sh"; path_prepend_ ..
+printf 'needle\nn2\n' > n || framework_failure_
+cp n haystack || framework_failure_
+gzip haystack || framework_failure_
fail=0
zgrep -f - haystack.gz < n > out 2>&1 || fail=1
compare out n || fail=1
+if ${BASH_VERSION+:} false; then
+ set +o posix
+ # This failed with gzip 1.6.
+ cat n n >nn || framework_failure_
+ eval 'zgrep -h -f <(cat n) haystack.gz haystack.gz' >out || fail=1
+ compare out nn || fail=1
+fi
+
+# This failed with gzip 1.4.
+echo a-b | zgrep -e - > /dev/null || fail=1
+
Exit $fail