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Re: EPUB using CSS vendor prefixing incorrectly?

From: Sylvain Galineau <galineau@adobe.com>
Date: Mon, 19 Aug 2013 16:04:08 -0700
To: James Craig <jcraig@apple.com>, "www-style@w3.org list" <www-style@w3.org>
Message-ID: <CE37F231.AE9E%galineau@adobe.com>


On 8/19/13 12:45 PM, "James Craig" <jcraig@apple.com> wrote:

>IDPF appears to be specifying a EPUB-specific technology subset prefix
>using the syntax for the CSS vendor prefix. This strikes me as both
>problematic (precludes vendor prefixing with this) as well as unnecessary
>(why not just use the unprefixed properties), but perhaps I'm
>misunderstanding something.
>	
>	• -epub-speak
>	• -epub-speak-as
>…
>	• -epub-text-align-last
>	• -epub-text-emphasis
>	• -epub-text-emphasis-color
>	• -epub-text-emphasis-style
>	• -epub-word-break
>
>http://www.idpf.org/epub/30/spec/epub30-contentdocs.html#sec-css-voice-cha

>racteristics
>http://www.idpf.org/epub/30/spec/epub30-contentdocs.html#sec-css-text

>
>Could someone please explain whether this is a valid use of the vendor
>prefix pattern? If it's not, the CSS WG chair should probably reach out
>to the IDPF and EPUB groups. If this *is* a valid use CSS vendor
>prefixes, are there any known implementations?

My understanding is that this is in fact necessary because EPUB releases
may depend on specific CSS *drafts*; thus until EPUB version N depends on
a REC for a given feature it uses -epub-.

Received on Monday, 19 August 2013 23:04:51 UTC

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