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Re: [css-writing-modes][CSS21] propagation of 'direction' from <body>

From: Koji Ishii <kojiishi@gmail.com>
Date: Wed, 18 Mar 2015 15:30:15 +0900
Message-ID: <CAN9ydbUmP74pR6+6_8x9ruGaJOK4XO=YPVuzEhzowYxZXEpv+g@mail.gmail.com>
To: Simon Pieters <simonp@opera.com>
Cc: Greg Whitworth <gwhit@microsoft.com>, fantasai <fantasai.lists@inkedblade.net>, "www-style@w3.org" <www-style@w3.org>
I found a discussion in Sydney minutes[1], and found that the whole
discussion misses writing-mode.

> could propagate from the HTML attribute on the
> body, but not propagate CSS 'direction'

It doesn't work for writing-mode unfortunately.

I'm ok to spec and change the behavior when different values are set
on html and body, that's rare at least for writing-mode, but when set
to only one of them, I'd like it to be honored. Either one is quite
common, and I do not see interoperability issues when set to either,
at least for writing-mode.

[1] https://lists.w3.org/Archives/Public/www-style/2015Mar/0188.html

On Tue, Mar 17, 2015 at 8:16 PM, Koji Ishii <kojiishi@gmail.com> wrote:
> Do we know how exactly we are not interoperable? As you said before,
> IE, Safari, Chrome propagates from body to HTML, right? I don't know
> how to test propagation for direction, so can't test Firefox without
> writing-mode support.
>
> Shouldn't we try to understand better how it's not interoperable, and
> try to fix only where needed?
>
> On Tue, Mar 17, 2015 at 5:42 PM, Simon Pieters <simonp@opera.com> wrote:
>> On Tue, 17 Mar 2015 03:26:33 +0100, Koji Ishii <kojiishi@gmail.com> wrote:
>>
>>> Is it only me, I'm lost for what good thing we're doing this
>>> discussion. I've never heard of single complaints from users nor
>>> authors not to propagate from body.
>>>
>>> I understand sometimes we need to sacrifice web-compat and thus users
>>> and authors for bigger benefits, but I do not see single benefits in
>>> this case. Can someone please explain?
>>
>>
>> The status quo is not interoperable, because 'direction' affects so many
>> different things in CSS. If the <body> special-case was dealt with in HTML,
>> it would be more isolated in implementations, and so everything in CSS would
>> get the desired result.
>>
>>
>> --
>> Simon Pieters
>> Opera Software
Received on Wednesday, 18 March 2015 06:30:45 UTC

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