set -x
set -eE -o pipefail
-cleanup() { :; }
-trap 'cleanup; echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
+cleanup() { :; }; _errcatch_cleanup=cleanup
-x="$(readlink -f "$BASH_SOURCE")"; cd ${x%/*}
+x="$(readlink -f "$BASH_SOURCE")"; source "${x%/*}/bash-trace"
+cd ${x%/*}
usage() {
cat <<EOF