Bug 229361 - font-feature-settings inline boundaries break contextual shaping
Summary: font-feature-settings inline boundaries break contextual shaping
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Text (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
Keywords: InRadar
Depends on: 6148
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Reported: 2021-08-20 20:57 PDT by Myles C. Maxfield
Modified: 2021-08-27 20:58 PDT (History)
2 users (show)

See Also:

Test (480 bytes, text/html)
2021-08-20 20:57 PDT, Myles C. Maxfield
no flags Details
Screenshot (703.24 KB, image/png)
2021-08-20 20:58 PDT, Myles C. Maxfield
no flags Details

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Description Myles C. Maxfield 2021-08-20 20:57:44 PDT
Created attachment 436060 [details]

If there is an inline element boundary between two elements which use the same font, but differ only in their font-feature-settings, the contextual shaping across the inline element boundary will be broken. It isn't broken in Chrome.

See attached HTML file. Unfortunately, I don't think I have the rights to post the specific font used in this example, but any font which has both contextual shaping and font features should display the bug.
Comment 1 Myles C. Maxfield 2021-08-20 20:58:12 PDT
Created attachment 436061 [details]
Comment 2 Myles C. Maxfield 2021-08-20 20:58:32 PDT
See also: https://bugzilla.mozilla.org/show_bug.cgi?id=1726891
Comment 3 Radar WebKit Bug Importer 2021-08-27 20:58:23 PDT