shopt -s expand_aliases

: ${TMPDIR:=/var/tmp}

echo '((echo abc; echo def;); echo ghi)' > $TMPDIR/x28-$$
. $TMPDIR/x28-$$
rm -f $TMPDIR/x28-$$

echo after

TMPFILE=$TMPDIR/x29-$$

echo "#! ${THIS_SH}" >$TMPFILE
cat >> $TMPFILE << \EOF

(echo -n "$1 "; echo subshell)
EOF
chmod 755 $TMPFILE

alias foo1='$TMPFILE one.1; source $TMPFILE two.1; source $TMPFILE three.1; $TMPFILE four.1'
alias foo2='$TMPFILE one.2;
source $TMPFILE two.2;
source $TMPFILE three.2;
$TMPFILE four.2;
'

foo1
foo2

echo x29 - done
rm -f $TMPFILE

# this is also treated similarly to an alias expansion internally
((echo abc; echo def;); echo ghi)

if (((4+4) + (4 + 7))); then
	echo ok
fi

(())	# make sure the null expression works OK