signals           347 src/signal.c   ScmObj Scm_SysSigsetOp(ScmSysSigset *set, ScmObj signals, int delp)
signals           351 src/signal.c       if (!SCM_PAIRP(signals)) {
signals           352 src/signal.c           Scm_Error("list of signals required, but got %S", signals);
signals           354 src/signal.c       SCM_FOR_EACH(cp, signals) {