235495 2022-01-23 10:24:25 -0800 HTML lang attribute doesn't always call font's LOCL feature 2022-01-24 21:20:43 -0800 1 1 1 Unclassified WebKit Text Safari 15 Mac (Apple Silicon) macOS 12 RESOLVED MOVED https://bugs.webkit.org/show_bug.cgi?id=235558 InRadar P2 Normal --- 1 ben mmaxfield ap mmaxfield webkit-bug-importer oldest_to_newest 1833104 0 ben 2022-01-23 10:24:25 -0800 Some languages are not working on Safari as in other browsers. Test page: http://test.fontpad.co.uk/Testing/MyanmarLOCLTest.html Along with the default Burmese numerals, the font contains localisations for Khamti (lang="kht"), Pa'O ("blk"), Pwo ("pwo"), Aiton ("aio"), Phake ("phk"), which are accessed using the font's LOCL feature and a lang attribute on the HTML element. All of those work fine in Firefox and Chrome, but Safari shows only the Khamti localisation. (Shan and Tai Laing / Shan Ni have their own codepoints so no substitutions are needed.) 1833120 1 webkit-bug-importer 2022-01-23 11:37:54 -0800 <rdar://problem/87944426> 1833191 2 mmaxfield 2022-01-23 21:09:31 -0800 It looks like the issue is in the underlying platform shaping engine, not WebKit. So I'm going to mark this bug as "moved" and we'll continue investigation internally in radar. 1833192 3 mmaxfield 2022-01-23 21:13:01 -0800 ("underlying platform shaping engine" = "Core Text") 1833601 4 mmaxfield 2022-01-24 21:20:29 -0800 See also: https://bugs.webkit.org/show_bug.cgi?id=235558