- From: Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no>
- Date: Wed, 25 Sep 2013 19:16:16 +0200
- To: Simon Sapin <simon.sapin@exyr.org>
- Cc: "www-style@w3.org" <www-style@w3.org>
Simon Sapin, Wed, 25 Sep 2013 14:41:51 +0100: > Le 25/09/2013 12:43, Leif Halvard Silli a écrit : >> Hence, these rules would not work in a namespace aware XML parser: >> >> [xmlns] { color: green } >> [xml:lang] { color: green } > > [xml:lang] Sorry, I forgot to escape: [xml\:lang]. So my point still stands: In a namespace aware XML parser, then this rule would not work [xml\:lang] { color: green } /* escaped the colon. */ > is not valid Selector syntax. You probably want this: Sorry, but I did not ask for help - I provided feedback to the editors of Selectors level 4. > As to [xmlns], some testing shows that a bare xmlns attribute > (defining the default namespace) ends up in the DOM with > 'namespaceURI' set to "http://www.w3.org/2000/xmlns/". I have no idea > why. It is because the browsers follow the specification of for namespaces in XML, which says that @xmlns lives in that namespace. > So the way to select it (though I don’t know why you would want > that) is: > > @namespace xmlns "http://www.w3.org/2000/xmlns/"; > [xmlns|xmlns] { color: green } You don't need to declare prefix. Like the section of Selectors 4 which I was quoting says, you could simply do this - which (unlike your example) would work in both XML and in HTML: [*|xmlns] { color: green} >> Proposal: Please add a note/info that mentions @xml:foo and @xmlns as >> examples of common attributes that cannot, when occurring in a XML >> document, be styled with a simple [att]{} selector. It helps authors to >> understand the concept if they see an actual, non-theoretical, example. >> >> [1] http://dev.w3.org/csswg/selectors4/#attrnmsp > > I find this @xmlns parsing oddity more confusing than helpful in > understanding namespaces. Well, if it is confusing, then that *too* is a reason to offer explanation in the spec. -- leif halvard silli
Received on Wednesday, 25 September 2013 17:16:50 UTC