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#   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/>.
#
swizzle()
{
exec {fd0}<&0
exec {fd1}>&1

exec {stdin}<&$fd0-
exec {stdout}>&$fd1-
}

swizzle

echo $stdin $stdout

read line <&$stdin <<EOF
a
EOF

echo $line
echo $line >&$stdout

type swizzle

exit 0