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Re: [css3-mediaqueries] not (media-feature)

From: Simon Sapin <simon.sapin@kozea.fr>
Date: Thu, 15 Nov 2012 22:10:19 +0100
Message-ID: <50A55A3B.5060206@kozea.fr>
To: Florian Rivoal <florian@rivoal.net>
CC: Boris Zbarsky <bzbarsky@mit.edu>, Kenneth Rohde Christiansen <kenneth.christiansen@gmail.com>, www-style@w3.org
Le 25/10/2012 11:24, Florian Rivoal a écrit :
> On Tue, 23 Oct 2012 17:24:39 +0200, Kenneth Rohde Christiansen
> <kenneth.christiansen@gmail.com> wrote:
>>>> Is "not (media-feature)" forbidden per syntax?
>>>   Yes.
>> It seems a bit counter intuitive and conflicting with:
>> "The logical NOT can be expressed through the ‘not’ keyword. The
>> presence of the keyword ‘not’ at the beginning of the media query
>> negates the result. I.e., if the media query had been true without the
>> ‘not’ keyword it will become false, and vice versa."
>> I stumpled upon this while debugging a website stating that we (tested
>> with Chrome) didn't support the monochrome media query.
>> Maybe we should just fix the grammar?
> I agree it is not very intuitive the way it is, especially since media
> types are less useful than initially intended. I would be happy to make
> this change, but given how long media queries have been out there,
> supported by everybody, I am not sure we can safely do it.
> As the syntax you want looks like it should work already, I am sure
> people have used it, and they may have gotten their page to look the
> way they want without noticing that the media query didn't work. If
> we make it work, these rules will start having an effect, which
> might no longer be the one originally desired.
> What does the rest of the WG think? Is this desirable (I think so)?
> Is this safe enough (I don't know)?

This same issue just came up again:

I think we should change the grammar.

How can we assess how "safe" the change would be?

Simon Sapin
Received on Thursday, 15 November 2012 21:10:55 UTC

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