- case opid1('*'): return fold_op_mul (fold, a, b);
- case opid1('/'): return fold_op_div (fold, a, b);
- case opid2('|','|'): return fold_op_andor(fold, a, b, true);
- case opid2('&','&'): return fold_op_andor(fold, a, b, false);
+ case opid1('*'): return fold_op_mul (fold, a, b);
+ case opid1('/'): return fold_op_div (fold, a, b);
+ case opid2('|','|'): return fold_op_andor(fold, a, b, true);
+ case opid2('&','&'): return fold_op_andor(fold, a, b, false);
+ case opid3('<','=','>'): return fold_op_lteqgt(fold, a, b);