simplify management of deferred forms
simplify management of deferred forms

ktakashi/picrin,dcurrie/picrin,omasanori/picrin,koba-e964/picrin,dcurrie/picrin,ktakashi/picrin,koba-e964/picrin,picrin-scheme/picrin,omasanori/picrin,leavesbnw/picrin,picrin-scheme/picrin,ktakashi/picrin,leavesbnw/picrin,koba-e964/picrin,leavesbnw/picrin