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Re: [mediaqueries] @media not (unsupported-media-feature) v.s. @media not (unsupported + syntax)

From: Simon Sapin <simon.sapin@exyr.org>
Date: Wed, 22 Apr 2015 23:44:55 +0200
Message-ID: <55381657.9070804@exyr.org>
To: "Tab Atkins Jr." <jackalmage@gmail.com>
CC: Florian Rivoal <florian@rivoal.net>, www-style list <www-style@w3.org>
On 22/04/15 21:32, Tab Atkins Jr. wrote:
> On Wed, Apr 22, 2015 at 9:45 AM, Simon Sapin <simon.sapin@exyr.org> wrote:
>> The point of all this is that for Y that evaluates to true and Z that has
>> evaluates to true, me might want `Y and Z` to evaluate to true.
> You got that last part confused.  What we want is for "Y or Z" to be
> true if Y or Z is true, regardless of what the other one is.  In
> particular, we don't want a <general-enclosed> on one side to mess
> that up, because it's irrelevant.

I can’t believe how wrong I typed that sentence. Yeah, that’s what was 
said on the call and I tried to repeat :)

> Your truth table is mostly correct, but I think "maybe AND false"
> should be false.  In particular, we should be implementing the Kleene
> 3-value logic: http://en.wikipedia.org/wiki/Three-valued_logic#Kleene_and_Priest_logics

Yes, that sounds more consistent than the one I made up while typing it.

Simon Sapin
Received on Wednesday, 22 April 2015 21:45:25 UTC

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