hush_test/hush-vars/var_preserved.tests

export a=b

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

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

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

echo OK
1	niro	816	export a=b
2
3			# external program
4			a=c /bin/true
5			env \| grep ^a=
6
7			# builtin
8			a=d true
9			env \| grep ^a=
10
11			# exec with redirection only
12			# in bash, this leaks!
13			a=e exec 1>&1
14			env \| grep ^a=
15
16			echo OK