rb_sym_to_proc   1374 internal.h     VALUE rb_sym_to_proc(VALUE sym);
rb_sym_to_proc    654 proc.c         	    return (klass != rb_cProc) ? sym_proc_new(klass, procval) : rb_sym_to_proc(procval);
rb_sym_to_proc   1797 proc.c         	    body = rb_sym_to_proc(body);
rb_sym_to_proc   9810 string.c           rb_define_method(rb_cSymbol, "to_proc", rb_sym_to_proc, 0);
rb_sym_to_proc    578 vm.c           	*procptr = rb_sym_to_proc(block->proc);
rb_sym_to_proc    481 vm_args.c      	    blockval = rb_sym_to_proc(blockptr->proc);