[Webkit-unassigned] [Bug 279223] New: text-emphasis marks are giant in vertical writing modes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=279223

            Bug ID: 279223
           Summary: text-emphasis marks are giant in vertical writing
                    modes
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
               URL: https://software.hixie.ch/utilities/js/live-dom-viewer
                    /?%3C!DOCTYPE%20html%3E%0A%3Cstyle%3Ep%20%7B%20text-em
                    phasis%3A%20circle%3B%20%7D%3C%2Fstyle%3E%0A%3Cp%3Et●x
                    t%0A%3Cp%20style%3D%22writing-mode%3A%20vertical-rl%22
                    %3Et●xt
                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,
                    webkit-bug-importer at group.apple.com, zalan at apple.com

For some reason we are rendering text-emphasis marks at full font size, instead of at 50%, in vertical writing modes (but not horizontal ones). This is super weird and bad and (unsurprisingly) results in WPT failures.

Testcase: https://software.hixie.ch/utilities/js/live-dom-viewer/?%3C!DOCTYPE%20html%3E%0A%3Cstyle%3Ep%20%7B%20text-emphasis%3A%20circle%3B%20%7D%3C%2Fstyle%3E%0A%3Cp%3Et●xt%0A%3Cp%20style%3D%22writing-mode%3A%20vertical-rl%22%3Et●xt'

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