Sure, I'm saying that old -webkit-background-clip works with keywords: border, content, padding. The new one - background-clip works with border-box, content-box, padding-box. So, per compat spec -webkit-background-clip should be alias to background-clip. But since the keywords are different, in order to handle round trip better (e.g. setting -webkit-background-clip to content would read back content-box, as it's an alias to background-clip), we want to drop support of old keywords without -box for -webkit-background-clip. To see how bad that would we've set up use counters. The biggest one is 0.08%. I've manually checked 80% of the websites reported by that use counter, but found that all of them use *-box keywords, and only one uses -webkit-background-clip: content. So I think it's safe to remove support for old keywords. Hope it's more clear now. On Wednesday, September 27, 2023 at 4:55:53 PM UTC+2 Daniel Bratell wrote:
> It allows to use the unprefixed version for background-clip: text and > makes -webkit-background-clip an alias for background-clip. Also, it drops > support for non-suffixed keywords (content, padding and border) for better > round-trip with alias. > > Can you clarify exactly what this means? I'm perfectly fine with lgtm-ing > unprefixing and adding a (temporary?) alias for the old keyword, but if we > start removing support for keywords we need to be more careful and I want > to be sure I understand. > > /Daniel > > On 2023-09-27 09:53, Daniil Sakhapov wrote: > > Also forgot to mention: the highest use counter for unsuffixed keyword is > 0.08 - and among those I've analyzed 80% of websites and all of them use > suffixed *-box version, so it's safe to remove. > > On Wednesday, September 27, 2023 at 9:49:35 AM UTC+2 Yoav Weiss wrote: > >> LGTM1 >> >> On Wed, Sep 27, 2023 at 2:38 AM 一丝 <[email protected]> wrote: >> >>> I think the correct specification address would be >>> https://drafts.csswg.org/css-backgrounds-4/#typedef-bg-clip >>> >>> In css-backgrounds-4 also added `border` value, should we support it >>> when removing the prefix? Maybe this needs to be discussed further by the >>> CSSWG. >>> >>> 在2023年9月27日星期三 UTC+8 06:04:54<[email protected]> 写道： >>> >>>> Is there any interest in doing the same for -webkit-text-fill-color? >>>> The two get typically used in combination for gradient effects: >>>> https://github.com/tomayac/blogccasion/blob/6ee3722011661db7a0c95c4379d7905bd8e95404/css/main.css#L100-L113. >>>> >>>> (See any of the headings on https://blog.tomayac.com/ for an example.) >>>> >>>> On Tue, Sep 26, 2023, 16:33 Daniil Sakhapov <[email protected]> >>>> wrote: >>>> >>>>> Contact emails [email protected] >>>>> >>>>> Specification >>>>> https://drafts.csswg.org/css-backgrounds/#background-clip >>>>> >>>>> Summary >>>>> >>>>> It allows to use the unprefixed version for background-clip: text and >>>>> makes -webkit-background-clip an alias for background-clip. Also, it >>>>> drops >>>>> support for non-suffixed keywords (content, padding and border) for >>>>> better >>>>> round-trip with alias. >>>>> >>>>> Blink component Blink>CSS >>>>> <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ECSS> >>>>> >>>>> Risks >>>>> >>>>> Interoperability and Compatibility >>>>> >>>>> None >>>>> >>>>> *Gecko*: Shipped/Shipping Firefox doesn't support keywords with no >>>>> suffix for prefixed version >>>>> >>>>> *WebKit*: Shipped/Shipping Safari supports keywords with no suffix >>>>> (border, content, padding), but only for prefixed version >>>>> >>>>> Will this feature be supported on all six Blink platforms (Windows, >>>>> Mac, Linux, Chrome OS, Android, and Android WebView)? Yes >>>>> >>>>> Is this feature fully tested by web-platform-tests >>>>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> >>>>> ? wpt.fyi/css/css-backgrounds/background-clip/clip-text-dynamic-2.html >>>>> >>>>> Link to entry on the Chrome Platform Status >>>>> https://chromestatus.com/feature/5125388091260928 >>>>> >>>>> This intent message was generated by Chrome Platform Status >>>>> <https://chromestatus.com/>. >>>>> >>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "blink-dev" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> To view this discussion on the web visit >>>>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAH3Z928OknOBtR09iMg2rc%2B8qst3%2Bk7Pek%2Bh_hmWA-fDxM8yVw%40mail.gmail.com >>>>> >>>>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAH3Z928OknOBtR09iMg2rc%2B8qst3%2Bk7Pek%2Bh_hmWA-fDxM8yVw%40mail.gmail.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>> -- >>> You received this message because you are subscribed to the Google >>> Groups "blink-dev" group. >>> >> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/2328dffa-e2c8-4c68-83f6-c9667b981823n%40chromium.org >>> >>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/2328dffa-e2c8-4c68-83f6-c9667b981823n%40chromium.org?utm_medium=email&utm_source=footer> >>> . >>> >> -- > You received this message because you are subscribed to the Google Groups > "blink-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > > To view this discussion on the web visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/4956583f-6dec-43d6-8d18-394e15c9d72an%40chromium.org > > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/4956583f-6dec-43d6-8d18-394e15c9d72an%40chromium.org?utm_medium=email&utm_source=footer> > . > > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. 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