Adding upstream version 5.2.37.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

tests/dstack2.tests

@@ -0,0 +1,49 @@
+#   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 <http://www.gnu.org/licenses/>.
+#
+wdir=$PWD
+cd /
+
+echo expect '~1'
+echo ~1
+
+pushd /usr
+pushd /tmp
+dirs
+
+echo these lines should be the same
+dirs +0
+echo ~0 ${DIRSTACK[0]}
+echo these lines should be the same
+dirs +1
+echo ~1 ${DIRSTACK[1]}
+echo these lines should be the same
+dirs +2
+echo ~2 ${DIRSTACK[2]}
+
+NDIRS=$(( ${#DIRSTACK[@]} - 1 ))
+
+echo these lines should be the same
+dirs -2
+echo ~-2 ${DIRSTACK[NDIRS-2]}
+
+echo these lines should be the same
+dirs -1
+echo ~-1 ${DIRSTACK[NDIRS-1]}
+dirs -v -1
+
+echo these lines should be the same
+dirs -0
+echo ~-0 ${DIRSTACK[NDIRS]}
+
+cd "$wdir"