tests/redir7.sub

#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# weird redirections that caused trouble and were fixed in post-3.0 bash
stuff()
{
	c=1
	( sleep 5 < /dev/null >/dev/null 2>&1 & ) &
}

exec 3>&1
eval `
exec 4>&1 >&3 3>&-
{
	stuff 4>&-
	echo "c=$c" >&4
}`
echo c1 is $c

unset -f stuff

stuff()
{
	c=2
	( sleep 5 < /dev/null >/dev/null 2>&1 & )
}

exec 3>&1
eval `
exec 4>&1 >&3 3>&-
{
	stuff 4>&-
	echo "c=$c" >&4
}`
echo c2 is $c

unset -f stuff

stuff()
{
	c=3
	{ sleep 5 < /dev/null >/dev/null 2>&1 & } &
}

exec 3>&1
eval `
exec 4>&1 >&3 3>&-
{
	stuff 4>&-
	echo "c=$c" >&4
}`
echo c3 is $c

unset -f stuff

stuff()
{
	c=4
	{ sleep 5 < /dev/null >/dev/null 2>&1 & }
}

exec 3>&1
eval `
exec 4>&1 >&3 3>&-
{
	stuff 4>&-
	echo "c=$c" >&4
}`
echo c4 is $c

# fixed in bash-3.1
echo 'exec <&3' | ${THIS_SH} 3<&0