hush_test/hush-misc/empty_args.tests

echo Null 0th arg:
""
echo $?
echo Null 1st arg:
# printf without args would print usage info
printf ""
echo $?
echo Null arg in exec:
exec printf ""
1	echo Null 0th arg:
2	""
3	echo $?
4	echo Null 1st arg:
5	# printf without args would print usage info
6	printf ""
7	echo $?
8	echo Null arg in exec:
9	exec printf ""