rb_method_call_with_block  436 include/ruby/intern.h VALUE rb_method_call_with_block(int, const VALUE *, VALUE, VALUE);
rb_method_call_with_block 1964 proc.c             return rb_method_call_with_block(argc, argv, method, proc);
rb_method_call_with_block 2536 proc.c             return rb_method_call_with_block(argc, argv, method, passed_proc);