ruby_signal       639 signal.c           return ruby_signal(signum, handler);
ruby_signal       701 signal.c           ruby_signal(sig, sighandler);
ruby_signal      1214 signal.c       	oldfunc = ruby_signal(sig, func);
ruby_signal      1360 signal.c           old = ruby_signal(signum, handler);
ruby_signal      1364 signal.c       	ruby_signal(signum, old);
ruby_signal      1378 signal.c           oldfunc = ruby_signal(sig, SIG_DFL);
ruby_signal      1381 signal.c       	ruby_signal(sig, oldfunc);
ruby_signal      1398 signal.c           oldfunc = ruby_signal(SIGINT, SIG_IGN);
ruby_signal      1400 signal.c       	ruby_signal(SIGINT, SIG_DFL);