: ${TMPDIR:=/tmp} ${THIS_SH:=./bash}
TMPFILE=$TMPDIR/redir-in-$$

trap 'rm -f $TMPFILE' 0

cat >$TMPFILE <<EOF
line 1
line 2
EOF

export TMPFILE
echo standard 1 - '<&0'
${THIS_SH} -c 'exec < $TMPFILE ; cat <&0 & wait'
echo posix 1 - '<&0'
${THIS_SH} -o posix -c 'exec < $TMPFILE ; cat <&0 & wait'

echo standard 2 - '0<&0'
${THIS_SH} -c 'exec < $TMPFILE ; cat 0<&0 & wait'
echo posix 2 - '0<&0'
${THIS_SH} -o posix -c 'exec < $TMPFILE ; cat 0<&0 & wait'

echo standard 3 - subshell containing AND-OR list '<&0'
${THIS_SH} -c 'exec < $TMPFILE ; ( cat <&0 & wait )'
echo posix 3 - subshell containing AND-OR list '<&0'
${THIS_SH} -o posix -c 'exec < $TMPFILE ; ( cat <&0 & wait )'

echo standard - subshell with explicit redirection
${THIS_SH} -c '( cat <&0 & wait ) <$TMPFILE'
echo posix - subshell with explicit redirection
${THIS_SH} -o posix -c '( cat <&0 & wait ) <$TMPFILE'

# pipeline input inhibits the implicit redirection from /dev/null; posix mode
# does not make a difference -- POSIX interp 1913
echo standard 1 - compound command with AND-OR list with pipe input
${THIS_SH} -c 'echo "hello inpipe" | { cat 0<&0 & wait; }'
echo posix 1 - compound command with AND-OR list with pipe input
${THIS_SH} -o posix -c 'echo "hello inpipe" | { cat 0<&0 & wait; }'

echo standard 2 - simple command with AND-OR list with pipe input
${THIS_SH} -c 'echo "jello inpipe" | cat 0<&0 & wait'
echo posix 2 - simple command with AND-OR list with pipe input
${THIS_SH} -o posix -c 'echo "jello inpipe" | cat 0<&0 & wait'

echo standard 3 - subshell command with AND-OR list with pipe input
${THIS_SH} -c 'echo "hello inpipe" | ( cat <&0 & wait )'
echo posix 3 - subshell command with AND-OR list with pipe input
${THIS_SH} -o posix -c 'echo "hello inpipe" | ( cat <&0 & wait )'