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Re: [CSS2.1] blocks with missing end bracket and parsing error

From: Alan Gresley <alan@css-class.com>
Date: Sat, 26 Mar 2011 13:31:10 +1100
Message-ID: <4D8D4FEE.80106@css-class.com>
To: Philippe Wittenbergh <ph.wittenbergh@l-c-n.com>
CC: Boris Zbarsky <bzbarsky@MIT.EDU>, Bjoern Hoehrmann <derhoermi@gmx.net>, CSS 3 W3C Group <www-style@w3.org>
On 26/03/2011 11:57 AM, Philippe Wittenbergh wrote:
>
> On Mar 26, 2011, at 6:19 AM, Boris Zbarsky wrote:
>
>> On 3/25/11 2:50 AM, Bjoern Hoehrmann wrote:
>>> * Alan Gresley wrote:
>>>> What I found interesting is that in IE8 and IE9, the remainder
>>>> of the style-sheet is thrown out. The pertinent CSS is this.
>>>>
>>>> p [ background: red } .test1 { background: green } .test2 {
>>>> background: green }
>>>
>>> Some time ago the CSS Working Group decided to change slash
>>> clarify the specification to require {[()]} matching when parsing
>>> selectors. Since all "open constructs" close when hitting the end
>>> of the style sheet this is parsed as `p [ ... ]` which is invalid
>>> and thus ignored.
>> Indeed.  This will be fixed in Gecko 2.2 as well, for what it's
>> worth [1].
>>
>> -Boris
>>
>> [1] https://bugzilla.mozilla.org/show_bug.cgi?id=616137
> Testing with a very recent hourly Minefield build [1], shouldn't the
> second block in the test case [2] have a green background ? Both
> blocks have a blue background.


Is this what you see in Minefield? This is also what IE8 and IE9 does.


> The CSS validator tells me that the following is the valid part of
> the stylesheet:
>
> p { background : blue; color : white; } .test2 { background : green;
> }
>
> [1] @ http://hg.mozilla.org/mozilla-central/rev/132e89233cfa [2]
> http://css-class.com/test/css21testsuite/blocks-031.xht


(The above test case has be changed, background colors)


I have a simpler test cases that shows the same behavior.

<http://css-class.com/test/css21testsuite/blocks-036.xht>


The CSS is this.

    [
    .test1 { background: green }


I would expect that the missing bracket would be added and parsed as [ 
... ] and that the first valid rule-set would be p.test1. The current 
behavior in non IE browser seems to recover by eating the selector of 
the following rule-set. Like so.

     [].test1    error
     { background: green }   error


And recovering to parse correctly .test2 { background: green }. I now 
thinking that in the test cases 'blocks-031' and 'blocks-036' both 
should have lines showing green.



-- 
Alan http://css-class.com/

Armies Cannot Stop An Idea Whose Time Has Come. - Victor Hugo
Received on Saturday, 26 March 2011 02:31:46 GMT

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