# $FreeBSD: head/bin/sh/tests/expansion/cmdsubst19.0 314637 2017-03-03 22:46:20Z jilles $ b=200 c=30 d=5 x=4 r=$(echo a)$(($(echo b) + ${x+$(echo c)} + ${x-$(echo d)}))$(echo e) [ "$r" = a234e ]