busybox-1.19.3/shell/hush_test/hush-vars/var_leaks.tests - nest-learning-thermostat/5.0.2/busybox - Git at Google

 # external program
 a=b /bin/true
 env | grep ^a=

 # builtin
 a=b true
 env | grep ^a=

 # exec with redirection only
 # in bash, this leaks!
 a=b exec 1>&1
 env | grep ^a=

 echo OK
	# external program
	a=b /bin/true
	env \| grep ^a=

	# builtin
	a=b true
	env \| grep ^a=

	# exec with redirection only
	# in bash, this leaks!
	a=b exec 1>&1
	env \| grep ^a=

	echo OK