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Re: security impact of dropping charset default

From: James Graham <jg307@cam.ac.uk>
Date: Wed, 23 Jan 2008 17:35:30 +0000
Message-ID: <47977AE2.7030503@cam.ac.uk>
To: Anne van Kesteren <annevk@opera.com>
CC: Frank Ellermann <hmdmhdfmhdjmzdtjmzdtzktdkztdjz@gmail.com>, ietf-http-wg@w3.org

Anne van Kesteren wrote:
> On Wed, 23 Jan 2008 13:46:00 +0100, Frank Ellermann 
> <nobody@xyzzy.claranet.de> wrote:
>> IMO it's generally a good idea to deprecate UTF-7 and Unicode-1-1,
>> and as far as I know one of the authors (Mark) and other experts
>> (Addison) would also support to deprecate UTF-7.  How about that
>> "general" solution ?
> What does deprecate mean? If support for UTF-7 can't be removed than 
> deprecating it will hardly matter. (I'm not sure whether support can or 
> can not be removed, but I'd expect there to be content to rely on it.) 
> Roy's suggestion of not sniffing for it seems like better advice to 
> implementors than a notion of it being deprecated.
FWIW HTML 5 says "User agents must not support the CESU-8, UTF-7, BOCU-1 and 
SCSU encodings" [1]

It has a similar constraint that authors must not use those encodings. As you 
say, this means nothing if support is required for web-compatibility.

[1] http://www.whatwg.org/specs/web-apps/current-work/#character0

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Received on Wednesday, 23 January 2008 17:35:43 UTC

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