196203 2019-03-25 08:56:38 -0700 [CSS3 Values] ch unit with text-orientation and vertical writing modes 2024-01-28 23:07:02 -0800 1 1 1 Unclassified WebKit CSS Safari Technology Preview Unspecified macOS 10.13 RESOLVED DUPLICATE 266937 InRadar, W3CTest, WPTImpact P2 Normal --- 1 browserbugs2 webkit-unassigned ahmad.saleem792 ntim simon.fraser webkit-bug-importer zalan oldest_to_newest 1520867 0 browserbugs2 2019-03-25 08:56:38 -0700 { ch unit Equal to the used advance measure of the "0" (ZERO, U+0030) glyph found in the font used to render it. (The advance measure of a glyph is its advance width or height, whichever is in the inline axis of the element.) Note: The advance measure of a glyph depends on writing-mode and text-orientation (...) } CSS3 Values and Units, section 5.1.1 Font-relative lengths: the em, ex, ch, rem units https://www.w3.org/TR/css-values-3/#ch Tests ----- In 'vertical-rl' writing mode with 'text-orientation: upright', the ch unit is equal to the used vertical advance measure of the 0 (ZERO, U+0030) glyph http://w3c-test.org/css/css-values/ch-unit-002.html In 'vertical-rl' writing mode with 'text-orientation: mixed', the ch unit is equal to the used horizontal advance measure of the 0 (ZERO, U+0030) glyph http://w3c-test.org/css/css-values/ch-unit-003.html In 'vertical-rl' writing mode with 'text-orientation: sideways', the ch unit is equal to the used horizontal advance measure of the 0 (ZERO, U+0030) glyph http://w3c-test.org/css/css-values/ch-unit-004.html In 'vertical-rl' writing mode with 'text-orientation: mixed', the ch unit is the advance width measure of the 0 (ZERO, U+0030) glyph http://w3c-test.org/css/css-values/ch-unit-010.html In 'vertical-rl' writing mode with 'text-orientation: upright', the ch unit is the advance height measure of the 0 (ZERO, U+0030) glyph http://w3c-test.org/css/css-values/ch-unit-011.html In 'vertical-rl' writing mode with 'text-orientation: sideways', the ch unit is the advance width measure of the 0 (ZERO, U+0030) glyph http://w3c-test.org/css/css-values/ch-unit-012.html These 6 tests fail in latest stable Safari 12 and in latest Safari Technology Preview. Firefox 68 and Epiphany Technological Preview 3.31.90-8061c1929 (WebKitGTK 2.24.0) pass these 6 tests. I searched for duplicates and did not find any. This is not a duplicate of bug 85755. Unfortunately, I do not have and do not use and do not have access to Mac OS X or to latest stable Safari 12 or to latest Safari Technological Preview; I was informed by Florian Rivoal about these test results. 1520929 1 webkit-bug-importer 2019-03-25 11:43:32 -0700 <rdar://problem/49222649> 1940936 2 ahmad.saleem792 2023-03-13 10:17:37 -0700 It seems these are now on WPT, adding WPTImpact tag: WPT Tests - https://wpt.fyi/results/css/css-values?label=master&label=experimental&aligned&view=subtest&q=css-values%2Fch- 2008386 3 ntim 2024-01-28 23:07:02 -0800 *** This bug has been marked as a duplicate of bug 266937 ***