data/method/busybox/busybox-1.36.0/shell/hush_test/hush-arith/arith-postinc.tests

echo 1 $((0++1))
echo 1 $((0--1))
x=-1; echo 1 $((0-$x))
x=+1; echo 1 $((0+$x))
a=3
echo 6 $((a+++3))   # a++ + 3
echo 7 $(((a)+++3)) # a + + + 3
echo 7 $(((a)+++3)) # a + + + 3
echo Ok:$?