Not sure about “e xit” off the top of my head, this isn't one of my “natural” languages, but I assume breaking eval is protected against by the multiple invocat

Not sure about “e xit” off the top of my head, this isn't one of my “natural” languages, but I assume breaking eval is protected against by the multiple invocations and the fact that assignment is an operator that returns its result as well as setting the target variable. If one of the evals is broken (or one of the =s between is removed) it just becomes a variable that is assigned to and the result is passed along. Three evals is enough to give the “any single character deleted” survivability, for “any two characters” you would need five (and many of the other tricks would need to be altered/expanded also).