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Re: FW: longdesc extension question

From: Charles McCathie Nevile <chaals@yandex-team.ru>
Date: Thu, 29 Aug 2013 17:14:52 +0200
To: "Silvia Pfeiffer" <silviapfeiffer1@gmail.com>
Cc: "Andrew Kirkpatrick" <akirkpat@adobe.com>, "public-html-a11y@w3.org" <public-html-a11y@w3.org>
Message-ID: <op.w2k3a2zpy3oazb@chaals.local>
On Thu, 29 Aug 2013 14:32:39 +0200, Silvia Pfeiffer  
<silviapfeiffer1@gmail.com> wrote:

> On Thu, Aug 29, 2013 at 5:58 AM, Charles McCathie Nevile <
> chaals@yandex-team.ru> wrote:
>
>> On Wed, 28 Aug 2013 01:15:37 +0200, Silvia Pfeiffer <
>> silviapfeiffer1@gmail.com> wrote:
>>
>>  Isn't that functionality provided by aria-describedby ?
>>>
>>
>> only in the case where the target of describedby is local to the  
>> document.
>> Unlike longdesc, aria-describedby cannot support external descriptions.
>>
>> (The long-term picture is that aria-describedat might be implemented and
>> change this, but currently it hasn't happened).
>>
>>
> So do aria-describedby implementations suffer from the same problem of
> starting to read at the referred element rather than just reading the
> referred element?

Nope. They take the element referred. Longdesc suggests authors make that  
feasible, but (for back-compat) doesn't require that.

> I'd suggest to use the same wording across both specs.

The two have different legacies over the decade since aria-describedby  
appeared (only 5 years after longdesc!). Since these are legacy specs, and  
hopefully in line to get obsoleted some time in the next decade (although  
people have been saying that about longdesc for 7 years and have got  
nowhere in that time), I think the differences are justified.

cheers

Chaals

-- 
Charles McCathie Nevile - Consultant (web standards) CTO Office, Yandex
       chaals@yandex-team.ru         Find more at http://yandex.com
Received on Thursday, 29 August 2013 15:15:25 UTC

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