check_eventloop_interp 2252 ext/tk/tcltklib.c if (check_eventloop_interp()) return 0; check_eventloop_interp 2343 ext/tk/tcltklib.c if (check_eventloop_interp()) return 0; check_eventloop_interp 2534 ext/tk/tcltklib.c if (check_eventloop_interp()) return 0;