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RE: [css3-fonts] opentype font feature support

From: Richard Fink <rfink@readableweb.com>
Date: Thu, 18 Mar 2010 08:39:38 -0400
To: "'Tab Atkins Jr.'" <jackalmage@gmail.com>
Cc: "'Thomas Phinney'" <tphinney@cal.berkeley.edu>, "'John Daggett'" <jdaggett@mozilla.com>, "'Christopher Slye'" <cslye@adobe.com>, "'www-style'" <www-style@w3.org>
Message-ID: <002501cac698$136c1720$3a444560$@com>
Tuesday, March 16, 2010 8:23 PM <jackalmage@gmail.com>:

>When we have UA-specific behavior like this, the convention seems to
>be to use 'auto' rather than 'normal', right?  'normal' implies
>determinism in the application of the property.

Tab,

Tell me what you mean by "determinism in the application of the property" as a deciding factor in choosing "auto" versus "normal" to mean what, in other contexts outside of CSS, is often "default".
Do you mean that if the behavior is loosely defined and there's a lot of wiggle room for the UA, "auto" is preferred?

Regards,

Rich

-----Original Message-----
From: www-style-request@w3.org [mailto:www-style-request@w3.org] On Behalf Of Tab Atkins Jr.
Sent: Tuesday, March 16, 2010 8:23 PM
To: rfink@readableweb.com
Cc: Thomas Phinney; John Daggett; Christopher Slye; www-style
Subject: Re: [css3-fonts] opentype font feature support

On Mon, Mar 15, 2010 at 12:28 PM, Richard Fink <rfink@readableweb.com> wrote:
> However, in an earlier post, Robert O'Callahan reported:
>>By default, Firefox will apply kerning for font sizes at or over a certain
> threshold (20 device pixels, currently).
> In other words, there is a threshold of 20 device pixels in place, below
> which the equivalent of "font-kerning:none" takes effect.
> Will other UA's automatically follow suit? Should they? Don't know. But to
> ensure that UA's consistently meet author's expectations the question seems
> to be: does "the meaning" of default/normal need to be more tightly defined?

When we have UA-specific behavior like this, the convention seems to
be to use 'auto' rather than 'normal', right?  'normal' implies
determinism in the application of the property.

~TJ
Received on Thursday, 18 March 2010 12:40:13 GMT

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