failures=0

check() {
	if ! eval "[ $* ]"; then
		echo "Failed: $*"
		: $((failures += 1))
	fi
}

longmark=`printf %01000d 4`
longmarkstripped=`printf %0999d 0`

check '"$(cat <<'"$longmark
$longmark"'
echo yes)" = "yes"'

check '"$(cat <<\'"$longmark
$longmark"'
echo yes)" = "yes"'

check '"$(cat <<'"$longmark
yes
$longmark"'
)" = "yes"'

check '"$(cat <<\'"$longmark
yes
$longmark"'
)" = "yes"'

check '"$(cat <<'"$longmark
$longmarkstripped
$longmark.
$longmark"'
)" = "'"$longmarkstripped
$longmark."'"'

check '"$(cat <<\'"$longmark
$longmarkstripped
$longmark.
$longmark"'
)" = "'"$longmarkstripped
$longmark."'"'

exit $((failures != 0))