This seems like an issue for the next major edition rather than a correctable "error" for ES5/5.1.
However, feel free to submit a bug at bugs.ecmascript.org. That will capture the issue so it can be address in a future edition. Allen ' On Mar 12, 2011, at 2:45 PM, David Bruant wrote: > Hi, > > I think it would be worth for spec readability to give a name to the for-in > property enumeration internal method and list it as such in ES5 8.6.2 Table 8 > regardless the fact that it is implementation-dependent. From the spec > edition point of view, it would require a bit of re-writing for the for-in > statement semantics algorithm. > > I have noticed that there is no mention of this internal method in Allen's > resource > (http://www.wirfs-brock.com/allen/things/es5-technial-notes-and-resources). > For the record, this internal method is "called" in (at least I haven't found > any other place): > * 12.6.4 The for-in Statement (twice) > * 15.2.3.7 Object.defineProperties > * 15.2.3.14 Object.keys > > It would probably help to define more easily how proxies reify Object.keys. > The 'enumerate' trap would just reify this new internal method ( > [[enumerate]]? ) and as such there would be no need to modify the for-in > statement definition as it is in > http://wiki.ecmascript.org/doku.php?id=harmony:proxies_semantics#modifications_to_the_evaluation_of_expressions_and_statements. > > David
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