RE: [RC4] margin-left-001 invalid

Le Lun 10 janvier 2011 19:27, Arron Eicholz a écrit :
> On Monday, January 10, 2011 7:04 PM Gérard Talbot wrote:
>> Le Lun 10 janvier 2011 17:51, Arron Eicholz a écrit :
>> > On Monday, January 10, 2011 5:27 PM Gérard Talbot wrote:
>> >> Le Lun 10 janvier 2011 16:17, Arron Eicholz a écrit :
>> >> > http://test.csswg.org/suites/css2.1/20101210/html4/margin-left-001.
>> >> > htm
>> >> >
>> >> > The HR element is by default per HTML4.01 set with align=center
>> >> > this has no mapping in CSS 2.1
>> >>
>> >> Consider that HR element is a block-level element and it's empty by
>> >> design: it has no inline boxes. So, the attribute specification
>> >> align=center can not be mapped to and should not be mapped to
>> >> 'text-align: center' in CSS. It has to be with 'margin-left: auto'
>> >> and
>> >> 'margin-right: auto'.
>> >
>> > You are making an assumption that there are no inline boxes. There
>> is
>> > nothing saying you can't create inline boxes.
>>
>> Well..
>>
>> <!ELEMENT HR - O EMPTY -- horizontal rule -->
>> http://www.w3.org/TR/html4/present/graphics.html#edef-HR
>>
>
> I knew that was somewhere. It's been a long day. :)
>
>> I mean
>> <hr>foo</hr>
>> is not valid and
>> <hr><span>bar</span></hr>
>> is not valid.
>>
>>
>> > At this point the
>> > implementation can chose to implement HR however it sees fit. Now
>> > granted I am not saying that creating inline boxes is the right
>> thing
>> > to do. I just saying, off the top of my head, I can't think of any
>> > clarification in CSS saying you can't create them in this case.
>> >
>> >>
>> >> HTML4 states it is aligned "with respect to the surrounding
>> context".
>> >> http://www.w3.org/TR/html4/present/graphics.html#h-15.3
>> >
>> > I understand what HTML4 says but there is nothing in CSS 2.1 that
>> > requires CSS to apply to the HR's align attribute in any way. The
>> > closest text is section 6.4.4 and even that is only a suggestion.
>> >
>> >> > and thus setting margin-left on the HR element still may do
>> nothing
>> >> if
>> >> > the align attribute isn't overridden which can be the case.
>> >> >
>> >> > This case should be removed from the CSS 2.1 test suite because
>> it
>> >> is
>> >> > testing an assumption of how HR elements are handled in CSS which
>> >> > isn't clear.
>> >>
>> >> Where should the following <div> go in this example?
>> >>
>> >> div
>> >> {
>> >> border: 1px inset;
>> >> margin-left: 0px;
>> >> width: 33%;
>> >> }
>> >>
>> >> <body>
>> >>  <div></div>
>> >> </body>
>> >
>> > The div should be aligned left.
>> >
>> >> Now, why should it be any different for <hr> then?
>> >
>> > The HR may be aligned left it may be aligned center CSS doesn't say
>> > how you override HTML attributes in all cases.
>> > And it doesn't in this
>> > specific case.
>> >
>> > Section 6.4.4 states that presentational attributes "may" be
>> > overridden by CSS but it doesn't say that they have to for every
>> case.
>> >
>> > After rereading section 6.4.4 I am even more convinced that this
>> case
>> > is invalid as it stands.
>>
>> I understand you: HTML presentational attributes may be overridden by
>> style
>> sheet rules but CSS 2.1 does not say or state (or specify) exactly how
>> in all
>> cases and in this specific case.
>>
>> I have just removed the margin-left-001:
>> revision version 1758
>>
>
> That works.
>
>> > At the very least this case should have a "may"
>> > flag and less strict pass conditions to allow it to pass if the HR
>> is
>> > centered or left aligned.
>>
>>
>> Arron, years ago, I filed bug 408027 at connect IE beta feedback and
>> carefully
>> explained all I could with links, references, explanations, etc. I was
>> certain
>> everything was clear, understood and agreed back then.
>>
>> By the way, while we are on this issue, what is your call on
>> http://test.csswg.org/suites/css2.1/20101210/html4/text-align-006.htm
>>
>> Because, if I understand your reasoning appropriately, then I should
>> remove
>> that testcase too.
>>
>
> Yeah text-align-006 is another case that falls into this same category.

text-align-006 has been removed.

Revision version 1759

regards, Gérard
-- 
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Received on Tuesday, 11 January 2011 03:41:44 UTC