Comment 9 for bug 1430339

Nobuto, thank you very much for your work on making Ubuntu support Japanese fonts properly. I can always learn so much in this respect from you and share your passion for visual aesthetics here.

As you may know, I usually remain with the LTS releases and only run the development release from time to time. As such, I hope the fix for this ticket will be backported to trusty as well. Furthermore, my system is mainly English-based. I hope you won't mind me adding my own experiences here.

I can basically confirm your findings, except that my US-locale returns a different font.

$ env LC_ALL=en_US.UTF-8 fc-match Ryumin
ipamp.ttf: "IPAPMincho" "Regular"
$ env LC_ALL=ja_JP.UTF-8 fc-match Ryumin
fonts-japanese-gothic.ttf: "Takao Pゴシック" "Regular"

I tried the test PDF in different viewers and noticed there were some alignment issues in the viewer built into Firefox (please refer to my screenshot). I suspect that is another, separate issue?

One of the things I sometimes notice is that Chinese at times seems to have precedence over Japanese. For someone like me, that is unfortunate. Are you aware of a list of known issues or some website to check if one's configuration has any errors? This area of Ubuntu seems to change from release to release so it is hard to keep up (with a lot of improvement being made, at least that has been my experience). I do not know as much as you do, so at best, I will notice the effects but I would be utterly unable to dig into the causes. That's why your work is so much appreciated.