To follow up, this issue is https://bugs.ecmascript.org/show_bug.cgi?id=78
On Jul 19, 2011, at 7:44 PM, Allen Wirfs-Brock wrote: > > On Jul 19, 2011, at 6:47 PM, Boris Zbarsky wrote: > >> On 7/19/11 7:43 PM, Ian Hickson wrote: >>> On Thu, 28 Apr 2011, Magnus Kristiansen wrote: >>>> >>>> Context: http://krijnhoetmer.nl/irc-logs/whatwg/20110428#l-707 >>>> >>>> Current browsers disagree about how to handle<div >>>> id=x></div><script>var x;</script>. Webkit browsers leave x pointing to >>>> the div, whereas IE, Firefox and Opera make x undefined [1]. (There is >>>> content that depends on x being undefined, but I don't have any links >>>> handy right now.) >>>> >>>> My reading of the relevant specs (es5 section 10, WebIDL 4.5.3, HTML >>>> 6.2.4) supports the Webkit behavior >> >>> Is this still something I should do, or did this get resolved using >>> another solution? >> >> Unclear. For one thing, the ES5 spec on this has changed, and there is no >> public draft with the errata yet; they're only present in the form of >> e-mails. That makes it hard for me to say at this point whether the above >> claim is even true. >> >> That said, even if we ignore the behavior of var, that leaves open questions >> about what happens on assignment, etc. I do think Cameron has done a bunch >> of testing of this stuff recently, and there was a data table that >> summarized the results somewhere. You should probably just talk to him >> about it. > > There we two bugs in this regard in the original ES5 spec, one related to > function declarations and the other related to var declarations. Functions > were partially fixed in the ES5.1 specification but that fix still had a > problem in that it did a GetProperty rather than a GetOwnProperty when check > to see if a function has been declared on the global object. None of the > corresponding fix for vars make it into the 5.1 spec. Both 5.1 corrections > were described by me on the es5-discuss mailing list this past January. > Those fixes will be included in the first Errata for ES5.1. > > The relevant message with the algorithm correction is > https://mail.mozilla.org/pipermail/es5-discuss/2011-January/003882.html > > Allen
