Adding upstream version 5.2.37.

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

tests/array18.sub

@@ -0,0 +1,47 @@
+#   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/>.
+#
+# arrays referenced using @ subscript and positional parameters should behave
+# the same way
+
+foo=(0 0 0); [[ -z ${foo[@]#0} ]]; echo $?
+
+recho "${foo[@]#0}"
+bar=${foo[@]#0}
+recho bar
+recho $bar
+recho -$bar-
+recho "$bar"
+
+qux="${foo[@]#0}"
+recho qux
+recho $qux
+recho -$qux-
+recho "$qux"
+
+unset foo qux bar
+
+set -- 0 0 0
+
+recho "${@#0}"
+bar=${@#0}
+recho bar
+recho $bar
+recho -$bar-
+recho "$bar"
+
+qux="${@#0}"
+recho qux
+recho $qux
+recho -$qux-
+recho "$qux"