#   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/>.
#
# tests of ksh93-like dup-and-close redirection operators
exec 9<$0

f()
{
exec 5<$0

exec 0<&5-

while read line; do
	echo "$line"
done
}

f

typeset -f f

# make sure it was closed
read -u 5 foo 2>&1 | grep -q 'invalid file descriptor' 
echo after read

exec 5<&0

exec <&-

read abcde 2>&1 | grep -q 'read error'

exec 0<&9-
read line
echo $line