bash/tests/redir11.sub

# make sure redirections do not have access to the temporary environment, even
# in subshells and command substitutions

a=1
a=4 b=7 ss=4 echo $a

# use grep to avoid differences due to different system error messages
a=42
a=2 echo foo 2>&1 >&$a | { grep -q '\$a: Bad file' || echo 'redir11 bad 1'; }
a=2 echo foo 2>&1 >&$(echo $a) | { grep -q 'Bad file' || echo 'redir11 bad 2'; }

foo()
{
	local -i a
	local v=0 x=1
	a+=3
	echo $a
}

a=4 b=7 ss=4 declare -i ss
a=4 b=7 foo
echo after: $a

unset a
a=4 echo foo 2>&1 >&$(foo) | { grep -q 'Bad file' || echo 'redir11 bad 3'; }
a=1 echo foo 2>&1 >&$(foo) | { grep -q 'Bad file' || echo 'redir11 bad 4'; }
a=1 echo foo 2>&1 >&$(a=4 foo) | { grep -q 'Bad file' || echo 'redir11 bad 5'; }
echo foo 2>&1 >&$(a=4 foo) | { grep -q 'Bad file' || echo 'redir11 bad 6'; }

a=42
a=2 echo foo 2>&1 >&$a | { grep -q 'Bad file' || echo 'redir11 bad 7'; }
a=2 echo foo 2>&1 >&$(echo $a) | { grep -q 'Bad file' || echo 'redir11 bad 8'; }

unset -f foo
foo()
{
	local -i a
	local v=0 x=1
	a+=3
	echo $a >&$(ss= declare -i ss)
}

a=4 b=7 foo
echo after: $a

unset a
typeset -i a
a=4 eval echo $(echo a+=3)
a=2
a=9 echo foo >&$(echo $a)
a=2
a=9 eval echo foo >&$(echo $a)
a=2
a=9 eval echo foo '2>&1 >&$(echo $a)' | { grep -q 'Bad file' || echo 'redir11 bad 9'; }