s/is_marked/gc_is_marked/g
s/is_marked/gc_is_marked/g

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