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Re: <meta http-equiv="Link"> question

From: Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no>
Date: Wed, 4 Aug 2010 21:23:24 +0200
To: Anne van Kesteren <annevk@opera.com>
Cc: Jonas Sicking <jonas@sicking.cc>, HTML WG <public-html@w3.org>, Boris Zbarsky <bzbarsky@mit.edu>
Message-ID: <20100804212324820221.f4e600c7@xn--mlform-iua.no>
Anne van Kesteren, Wed, 04 Aug 2010 19:37:20 +0200:
> On Wed, 04 Aug 2010 19:31:15 +0200, Jonas Sicking <jonas@sicking.cc> wrote:
>> On Tue, Aug 3, 2010 at 11:26 PM, Anne van Kesteren 
>> <annevk@opera.com> wrote:
>>> http://www.w3.org/Bugs/Public/show_bug.cgi?id=9797
>> 
>> For what it's worth, I'd be happy to remove support for this assuming
>> it doesn't "break the web".

Did you, before saying this, consider that Mozilla also supports link 
prefetching via http-equiv="link"? [1] 

>> 
http://www.google.com/codesearch?hl=en&lr=&q=http-equiv\s*%3D\s*%28%22|%27%29%3FLink&sbtn=Search
>> 
>> shows no results, but I'm not sure how much content that searches.

My fist search result for http-equiv="link", was quite interesting ... 
[2]

> I doubt it breaks the Web given that only Opera and Mozilla support 
> it. I'm fine with dropping it from Opera too.

Could we also remove http-equiv="default-style" [3], with the same 
justification? (No support, except in Opera and Mozilla.)

Btw, I slightly disagree with the bug report: [5] Opera an Mozilla's 
treatment of http-equiv="Link" is quite in line with HTML4's general 
specification of META: [4]

]] Note. When a property specified by a META element takes a value that
   is a URI, some authors prefer to specify the meta data via the LINK
   element.[[

>>> Browsers also support Set-Cookie here:
>>> 
>>> http://www.w3.org/Bugs/Public/show_bug.cgi?id=9578
>> 
>> I feel less strongly about Set-Cookie. There is no fully equivalent
>> feature, so we'd have to check if people find this feature useful or
>> not.
> 
> Per that bug sites are actually using this unfortunately. There is an 
> equivalent feature of course, the Set-Cookie header at the HTTP level 
> :-) And the document.cookie API.

FWIW, ha.ckers.org also mention http-equiv="Set-Cookie". [2]

[1] https://developer.mozilla.org/en/link_prefetching_faq
[2] http://ha.ckers.org/xss.html
[3] 
http://dev.w3.org/html5/spec/semantics#attr-meta-http-equiv-default-style
[4] http://www.w3.org/TR/html4/struct/global.html#h-7.4.4.2
[5] http://www.w3.org/Bugs/Public/show_bug.cgi?id=9797
-- 
leif halvard silli
Received on Wednesday, 4 August 2010 19:24:02 GMT

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