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+# Process this file with autom4te to create testsuite. -*- Autotest -*-
+
+# Test suite for GNU tar.
+# Copyright 2005-2007, 2013-2014, 2016 Free Software Foundation, Inc.
+
+# This file is part of GNU tar.
+
+# GNU tar 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.
+
+# GNU tar 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 <http://www.gnu.org/licenses/>.
+
+# Check that tar --update does not add non-changed directories to the
+# archive.
+# References: <42AB0D28.6030706@mein-horde.de>
+# by Martin Lohmeier <martin@mein-horde.de>
+# on Sat, 11 Jun 2005 18:11:20 +0200
+# http://lists.gnu.org/archive/html/bug-tar/2005-06/msg00024.html
+
+AT_SETUP([update unchanged directories])
+AT_KEYWORDS([update update00])
+
+AT_TAR_CHECK([
+AT_SORT_PREREQ
+mkdir directory
+genfile --length 10240 --pattern zeros --file directory/file1
+genfile --length 10240 --pattern default --file directory/file2
+
+tar cf archive directory || exit 1
+echo separator
+tar uf archive directory || exit 1
+echo separator
+tar tf archive | sort || exit 1
+],
+[0],
+[separator
+separator
+directory/
+directory/file1
+directory/file2
+])
+
+AT_CLEANUP