Bug 244668

Summary: Remove non-standard `-webkit-writing-mode: horizontal-bt`
Product: WebKit Reporter: Tim Nguyen (:ntim) <ntim>
Component: Layout and RenderingAssignee: Tim Nguyen (:ntim) <ntim>
Status: NEW ---    
Severity: Normal CC: ahmad.saleem792, bfulgham, koivisto, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: BrowserCompat, InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Description Tim Nguyen (:ntim) 2022-09-01 08:03:06 PDT 
It is non-standard, and has some maintenance cost.
Comment 1 Tim Nguyen (:ntim) 2022-09-01 10:56:10 PDT 
Pull request: https://github.com/WebKit/WebKit/pull/3917
Comment 2 Radar WebKit Bug Importer 2022-09-08 08:04:15 PDT 
<rdar://problem/99698393>
Comment 3 Ahmad Saleem 2023-11-06 17:55:16 PST 
Searching 'webkit-horizontal-bt' on GitHub does not seem to show much and mostly in 'WebKit' repo.

Firefox never implemented this and Blink removed last code in 2017 (if I go by this commit in 2017):

https://chromium.googlesource.com/chromium/src.git/+/3621a3132bef560f740f532aa24a76230f0a7ac1

If we have any internal Apple metrics for use case, I think we should give it another try.

@Tim - any metric or use cases within Apple Apps?