function fred { FSTONES=`echo 'fred'`; }
function barney { RUBBLES=$(echo 'barney'); }

alias assemble_fam1="fred
    FSTONES=wilma:bam-bam:\$FSTONES"

alias assemble_fam2="barney
    RUBBLES=betty:pebbles:\$RUBBLES"

function run_aliases {
    assemble_fam1
    assemble_fam2
}

function say_families {
    echo "Flintstones=$FSTONES"
    echo "Rubbles=$RUBBLES"
}

function reset_vars { unset FSTONES RUBBLES; }