[Webkit-unassigned] [Bug 279219] New: text-emphasis-position overlapping ruby suppression broken for ruby-position: under / -webkit-ruby-position: after

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=279219

            Bug ID: 279219
           Summary: text-emphasis-position overlapping ruby suppression
                    broken for ruby-position: under /
                    -webkit-ruby-position: after
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
               URL: https://software.hixie.ch/utilities/js/live-dom-viewer
                    /?%3C!DOCTYPE%20html%3E%0A%3Chtml%20style%3D%22writing
                    -mode%3A%20vertical-rl%22%3E%0A%3Cstyle%3Ep%20%7B%20te
                    xt-emphasis%3A%20dot%3B%20%7D%3C%2Fstyle%3E%0A%3Cp%20s
                    tyle%3D%22text-emphasis-position%3A%20over%20left%22%3
                    E%3Cruby%3Eleft%20dots%3Crt%3Eruby%3C%2Frt%3E%3C%2Frub
                    y%3E%0A%3Cp%20style%3D%22text-emphasis-position%3A%20r
                    ight%20over%22%3E%3Cruby%3Eright%20dots%3Crt%3Eruby%3C
                    %2Frt%3E%3C%2Fruby%3E%0A%3Cp%20style%3D%22text-emphasi
                    s-position%3A%20left%20over%22%3E%3Cruby%20style%3D%22
                    -webkit-ruby-position%3A%20after%22%3Eleft%20dots%3Crt
                    %3Eruby%3C%2Frt%3E%3C%2Fruby%3E%0A%3Cp%20style%3D%22te
                    xt-emphasis-position%3A%20over%20right%22%3E%3Cruby%20
                    style%3D%22-webkit-ruby-position%3A%20after%22%3Eright
                    %20dots%3Crt%3Eruby%3C%2Frt%3E%3C%2Fruby%3E%0A
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fantasai.bugs at inkedblade.net
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

The code for checking if text-emphasis dots will overlap ruby doesn't check ruby-position, resulting in
- disappearing the emphasis dots when unnecessary
- overlapping dots and annotations when they're both on the under side

See testcase: https://software.hixie.ch/utilities/js/live-dom-viewer/?%3C!DOCTYPE%20html%3E%0A%3Chtml%20style%3D%22writing-mode%3A%20vertical-rl%22%3E%0A%3Cstyle%3Ep%20%7B%20text-emphasis%3A%20dot%3B%20%7D%3C%2Fstyle%3E%0A%3Cp%20style%3D%22text-emphasis-position%3A%20over%20left%22%3E%3Cruby%3Eleft%20dots%3Crt%3Eruby%3C%2Frt%3E%3C%2Fruby%3E%0A%3Cp%20style%3D%22text-emphasis-position%3A%20right%20over%22%3E%3Cruby%3Eright%20dots%3Crt%3Eruby%3C%2Frt%3E%3C%2Fruby%3E%0A%3Cp%20style%3D%22text-emphasis-position%3A%20left%20over%22%3E%3Cruby%20style%3D%22-webkit-ruby-position%3A%20after%3B%20ruby-position%3A%20under%22%3Eleft%20dots%3Crt%3Eruby%3C%2Frt%3E%3C%2Fruby%3E%0A%3Cp%20style%3D%22text-emphasis-position%3A%20over%20right%22%3E%3Cruby%20style%3D%22-webkit-ruby-position%3A%20after%3B%20ruby-position%3A%20under%22%3Eright%20dots%3Crt%3Eruby%3C%2Frt%3E%3C%2Fruby%3E%0A

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