Rebinding proposal for JS

rebind.js

Function.prototype.bind = function(thisVal) {
    var func = this.__orig__ || this;

    var bound = function() {
        return func.apply(thisVal, arguments);
    };
    bound.__orig__ = func;
    return bound;
};

var f = function() { return this; }
print(f.bind(12)());
print(f.bind(12).bind(13)())