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Re: [css3-syntax] Normalize some tokens to lower-case

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Thu, 24 Jan 2013 12:06:17 -0800
Message-ID: <CAAWBYDBGkpuQxyJcZTJmn1z1fbALyYMu5LsLG5DGkEpKZp+Ukw@mail.gmail.com>
To: Glenn Adams <glenn@skynav.com>
Cc: Simon Sapin <simon.sapin@kozea.fr>, www-style list <www-style@w3.org>
On Thu, Jan 24, 2013 at 11:59 AM, Glenn Adams <glenn@skynav.com> wrote:
> On Thu, Jan 24, 2013 at 11:39 AM, Tab Atkins Jr. <jackalmage@gmail.com>
> wrote:
>> On Thu, Jan 24, 2013 at 7:49 AM, Simon Sapin <simon.sapin@kozea.fr> wrote:
>> > Apparently at-keywords, function names and dimension units are
>> > normalized to
>> > lower-case in CSSOM serialization. Should that normalization happen as
>> > early
>> > as in the tokenizer?
>> >
>> > Until tokens or "primitives" are exposed in some API this might only be
>> > an
>> > implementation concern and irrelevant to the spec. I’m not sure.
>>
>> Yeah, I'm not sure either.  I've added an issue to the spec to keep it
>> in mind, though.
>
>
> I notice that in the case of Opera, the original un-normalized form 'DiSc'
> is stored and returned when reading CSSStyleDeclaration.cssText for the
> inline style. However, for IE, FF, and Safari, its normalized form is
> returned. In all four UAs, the normalized form is returned for computed
> style.
>
> So the answer about where normalization occurs, at least at present, is it
> depends on the UA, with Opera clearly not normalizing at parse time.

For WebKit, I know that's because we eagerly parse it into our
internal data structures, and reserialize when you ask for cssText.  I
suspect the FF and IE are the same.

~TJ
Received on Thursday, 24 January 2013 20:07:09 GMT

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