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Re: [selectors-nonelement] ::attr(*|localname), ::attr(ns|*), and ::attr(*)

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Thu, 27 Feb 2014 10:34:02 -0800
Message-ID: <CAAWBYDAtg960e3jDjTdPq0A8rCbEC9aRdJzhADnwfz-BCE1scw@mail.gmail.com>
To: Jirka Kosek <jirka@kosek.cz>
Cc: Simon Pieters <simonp@opera.com>, Simon Sapin <simon.sapin@exyr.org>, www-style <www-style@w3.org>
On Thu, Feb 27, 2014 at 9:42 AM, Jirka Kosek <jirka@kosek.cz> wrote:
> On 27.2.2014 18:26, Tab Atkins Jr. wrote:
>>> But as there is already inconsistency between type selectors ("E"
>>> selects E elements in any namespace) and attribute selectors ("[A]"
>>> matches elements that have A attribute in no namespace)
>>
>> That's due to default namespaces, not anything fundamental.  It's also
>> not an *internal* inconcistency - "E" and "*" both select using the
>> default namespace in type selectors, while attribute selectors don't
>> have a "*" at all, and so can't be inconsistent internally.
>
> But if there is no default namespace in CSS, then namespace treatment of
> "E" and "[A]" is very different.

No, it's exactly the same.  If you don't explicitly declare a default
namespace, the default namespace is "*".  Everything I said is still
true.

>>> I don't think
>>> that special treatment of "*" as wildcard in ::attr(*) will do any harm.
>>> After all this behaviour can be brought back to attribute selectors --
>>> "[*]" will match element that has at least one attribute.
>>
>> If attribute selectors allowed "[*]", it would match an element with
>> at least one attribute *in the null namespace* (to be consistent with
>> the behavior of plain attribute names).  You'd have to write [*|*] to
>> select an element with any attribute whatsoever.
>
> Although I can follow you reasoning, I don't consider such behaviour of
> * really useful and logical. Probably due to my 15 years experience with
> XPath. :-)
>
> If you really think that having ::attr(*) for all attributes will result
> in dead kittens, let's move on and have ::attr() for choosing all
> attributes.

Hey, it's even less typing!  Let's move on with this, yeah.

~TJ
Received on Thursday, 27 February 2014 18:34:49 UTC

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