https://bugzilla.mozilla.org/show_bug.cgi?id=1081858
https://drafts.csswg.org/css-text/#line-break-transform
2つ目の条件の F
だの H
だのについて
- F: East Asian Fullwidth http://www.unicode.org/reports/tr11/#ED2
- W: East Asian Wide http://www.unicode.org/reports/tr11/#ED4
- H: East Asian Halfwidth http://www.unicode.org/reports/tr11/#ED3
- A: East Asian Ambiguous http://www.unicode.org/reports/tr11/#ED6