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-rwxr-xr-xsrc/grep/tests/posix-bracket34
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diff --git a/src/grep/tests/posix-bracket b/src/grep/tests/posix-bracket
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+++ b/src/grep/tests/posix-bracket
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+#!/bin/sh
+# Check various bracket expressions in the POSIX locale.
+
+# Copyright 2014-2021 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/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+LC_ALL=C
+export LC_ALL
+
+fail=0
+
+echo a >in || framework_failure_
+for bracketed in '[.a.]' '[.a.]-a' 'a-[.a.]' '[.a.]-[.a.]' \
+ '[=a=]' '[:alpha:]' 'a-a[.-.]--'; do
+ grep "[$bracketed]" in >out || fail=1
+ compare in out || fail=1
+ grep "[^$bracketed]" in >out
+ test $? -eq 1 || fail=1
+ compare /dev/null out || fail=1
+done
+Exit $fail