[Webkit-unassigned] [Bug 246676] New: Add support for the values raise | drop on initial-letter property

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=246676

            Bug ID: 246676
           Summary: Add support for the values raise | drop on
                    initial-letter property
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: BrowserCompat
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: karlcow at apple.com

See for tests https://wpt.fyi/results/css/css-initial-letter?label=master&label=experimental&aligned&view=subtest&q=initial-letter

Spec
https://www.w3.org/TR/css-inline/#sizing-drop-initials

Applies to:
certain inline-level boxes and ::first-letter and inside ::marker boxes (see prose)

raise
Computes to an initial letter sink of 1.
drop
Computes to an initial letter sink equal to the initial letter size floored to the nearest positive whole number.
If the initial letter sink value is omitted, drop is assumed.


Blink
https://groups.google.com/a/chromium.org/g/blink-reviews-style/c/jHLdqhphZ3M
https://chromium-review.googlesource.com/c/chromium/src/+/3874383 (the current patch doesn't include raise and drop)

Gecko doesn't implement yet raise and drop
https://bugzilla.mozilla.org/show_bug.cgi?id=1223880

CSSWG discussion
https://github.com/w3c/csswg-drafts/issues/2955

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