‘text-orientation: upright’ should render Mongolian in its intrinsic orientation
Reported by
kari.pih...@gmail.com,
May 3 2017
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Issue descriptionUserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.96 Safari/537.36 Steps to reproduce the problem: 1. Open the attached test-case-mongolian.html file. 2. Observe the result. What is the expected behavior? All three Mongolian texts should look the same. What went wrong? Mongolian text isn’t rendered correctly in vertical writing mode, if text-orientation is upright. See the attached screenshot-chrome.png how it looks like on macOS 10.12, Chrome 58. On Mac, I had to install Mongolian White font to get mixed and sideways correct: http://www.mongolfont.com/en/font/mnglwhiteaat.html Did this work before? N/A Does this work in other browsers? No Firefox has the same bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1361631 Chrome version: 58.0.3029.96 Channel: stable OS Version: OS X 10.12.4 Flash Version: The Writing Modes 3 specification [1] says for upright: “Typographic character units from vertical scripts are typeset with their intrinsic orientation and shaped normally.” Appendix A lists Mongolian as a vertical script [2]. I also confirmed this on css mailing list [3]. A correct implementation may have to inspect the script tag to recognize vertical scripts. [1] https://drafts.csswg.org/css-writing-modes-3/#text-orientation [2] https://drafts.csswg.org/css-writing-modes-3/#script-orientations [3] https://lists.w3.org/Archives/Public/www-style/2017May/0002.html
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May 3 2017
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May 3 2017
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May 4 2017
Tested on mac os 10.12.3 , windows 7 and ubuntu 14.04 using chrome M58 #58.0.3029.96 and chrome canary M60 #60.0.3089.0 and issue is reproduced. Issue is seen from M48 #48.0.2560.0 and M30 to M47 issue behavior is different and is a non-regression issue. Thanks!
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May 4 2018
This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue. Sorry for the inconvenience if the bug really should have been left as Available. For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot
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May 7 2018
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May 7 2018
Test in writing-modes test suite: http://test.csswg.org/suites/css-writing-modes-3_dev/nightly-unstable/html/mongolian-orientation-001.htm "Mongolian is intrinsicly vertical, mixed and upright text-orientation are expected to be the same." Firefox 59 and Edge 16 pass that test. Chrome 67.0.3386.1 fails that test. |
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Comment 1 by kavvaru@chromium.org
, May 3 2017