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Re: feedback requested on WAI CG Consensus Resolutions on Text alternatives in HTML 5 document

From: Charles McCathieNevile <chaals@opera.com>
Date: Sat, 22 Aug 2009 13:46:05 +0200
To: Smylers <Smylers@stripey.com>, "HTMLWG WG" <public-html@w3.org>, "W3C WAI-XTECH" <wai-xtech@w3.org>
Message-ID: <op.uy2ay3t3wxe0ny@widsith.local>
On Mon, 17 Aug 2009 12:36:19 +0200, Smylers <Smylers@stripey.com> wrote:

> Benjamin Hawkes-Lewis writes:
>
>> On 17/08/2009 10:30, Smylers wrote:
>>
>> > If every instance of alt="" should also have role=presentation then
>> > could we get user-agents to infer that?
...
>> I'm suggesting that not every instance of alt="" should have
>> role="presentation"

(I agree)

> That seems reasonable -- and would be a good reason for not warning all
> authors using alt="" with a specific recommendation to add
> role=presentation.

Not necessarily. The logic runs like this:

There is lots of alt="" out there. Some of it refers to stuff that doesn't  
need more text for understanding, and can be effectively treated as  
presentation. Adding role="presentation" would help distinguish this, IF  
there is some mechanism where authors who care add role="presentation",  
while authors who just want to pass a conformance test don't.

In either case, I agree with Maciej that the spec should not tell software  
what not to show - dealing with these situations is messy enough that  
different heuristics for different users are going to matter for some time  
(at least until authoring improves, and I don't think that will be soon...)

cheers

chaals

-- 
Charles McCathieNevile  Opera Software, Standards Group
     je parle français -- hablo español -- jeg lærer norsk
http://my.opera.com/chaals       Try Opera: http://www.opera.com
Received on Saturday, 22 August 2009 11:46:50 UTC

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