hush/shell/ash_doc.txt
Denis Vlasenko 991a1da148 ash: fix "orwell bug" 1984. Testcase:
trap_handler() {
        echo trap
    }
    trap trap_handler USR1
    sleep 3600 &
    while true; do wait; done
2008-02-10 19:02:53 +00:00

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Wait + signals
We had some bugs here which are hard to test in testsuite.
Bug 1280 (http://busybox.net/bugs/view.php?id=1280):
was misbehaving in interactive ash. Correct behavior:
$ sleep 20 &
$ wait
^C
$ wait
^C
$ wait
^C
...
Bug 1984 (http://busybox.net/bugs/view.php?id=1984):
traps were not triggering:
trap_handler_usr () {
echo trap usr
}
trap_handler_int () {
echo trap int
}
trap trap_handler_usr USR1
trap trap_handler_int INT
sleep 3600 &
echo "Please do: kill -USR1 $$"
echo "or: kill -INT $$"
while true; do wait; echo wait interrupted; done