2007/02/02 RD VMMXX
    Assets:Investments:Vanguard:VMMXX  0.350 VMMXX @ $1.00
    Income:Dividends:Vanguard:VMMXX        $-0.35

test reg --payee='account_base + ":" + commodity'
07-Feb-02 VMMXX:VMMXX           As:Inves:Vanguar:VMMXX  0.350 VMMXX  0.350 VMMXX
07-Feb-02 VMMXX:$               In:Divid:Vanguar:VMMXX       $-0.35       $-0.35
                                                                     0.350 VMMXX
end test