[Webkit-unassigned] [Bug 243991] New: list-item shorthand property doesn't work with "inside none" but with "none inside"

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=243991

            Bug ID: 243991
           Summary: list-item shorthand property doesn't work with "inside
                    none" but with "none inside"
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Mac (Apple Silicon)
                OS: macOS 12
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: myakura.web at gmail.com

Created attachment 461670

  --> https://bugs.webkit.org/attachment.cgi?id=461670&action=review

test case (`inside none`, `none inside`, `none`)

Steps to reproduce:

1. open the attached test case


Expected result:

There are no bullet point before the text on each list item.


Actual result:

There is a visible list bullet on the first list item in Safari Technology Preview 151, while there is no bullet in Safari 15.6.


Additional comments:


The `list-style` shorthand property takes values of `list-style-position`, `list-style-image`, and `list-style-type` properties.
https://www.w3.org/TR/css-lists-3/#list-style-property

The grammar defines those longhand values can be set in any order, so either `inside none` or `none inside`, or `none` should render the same (no bullets).
https://www.w3.org/TR/css-values/#comb-any

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