push_hold_buf    3379 ext/nkf/nkf-utf8/nkf.c     push_hold_buf(c1);
push_hold_buf    3380 ext/nkf/nkf-utf8/nkf.c     push_hold_buf(c2);
push_hold_buf    3388 ext/nkf/nkf-utf8/nkf.c 	if (push_hold_buf(c2) == EOF || estab_f) {