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+# 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/>.
+#
+# test being able to use job control notation in jobs/kill/wait without
+# job control active, as the SUS requires
+
+sleep 2 &
+
+sleep 2 &
+sleep 2 &
+sleep 2 &
+(sleep 2 ; exit 4) &
+
+jobs
+
+wait %%
+echo $?
+
+wait %1
+echo $?
+
+wait
+
+# the sleep is intended to give the kill time to execute before the job
+# exits
+(sleep 1 ; cat ) &
+kill -1 %% && echo i killed it || echo could not kill it