>/ I disagree. In those situations you should just iterate over the string using `for...of`. / That seems to iterate over code units as far as I can tell.for (var x of "?") print(x.charCodeAt(0)) invokes print() twice in Gecko.
SpiderMonkey does not implement the (yet to be) spec'ed String.prototype.@@iterator function, instead it simply aliases String.prototype["@@iterator"] to Array.prototype["@@iterator"]:
js> String.prototype["@@iterator"] === Array.prototype["@@iterator"] true - André
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