[Bug 1352142] [NEW] Doesn't load Japanese font on Ubuntu Touch

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Daniel Holbach (dholbach):

Unity8 on Ubuntu Touch doesn't load Japanese font in Japanese
environment.

How to reproduce:

1. Install Ubuntu Touch
2. Set environment to Japanese at first boot
3. Reboot system (option)
4. Check whether a glyph come from Japanese font

Expected result:
Use Japanese gothic font (Droid Sans Japanese), and no Mojibake.

Actual result:
Use "AR PL Ukai CN" (Chinese serif font), and some glyphs are missing.
Please refer attached image.

Other information from phablet-shell:

$ strings /proc/`pidof unity8`/environ | grep 'LANG\|LC'
LANGUAGE=ja
LC_TIME=ja_JP.UTF-8
LC_MONETARY=ja_JP.UTF-8
GDM_LANG=ja
LC_ADDRESS=ja_JP.UTF-8
LANG=ja_JP.UTF-8
LC_TELEPHONE=ja_JP.UTF-8
LC_NAME=ja_JP.UTF-8
LC_MEASUREMENT=ja_JP.UTF-8
LC_IDENTIFICATION=ja_JP.UTF-8
LC_NUMERIC=ja_JP.UTF-8
LC_PAPER=ja_JP.UTF-8

=> It seems that LANG env is vallid.

For "音" (U+97F3), the glyph is visible in unity8, but use "AR PL UKai CN".
Pleace replace '_' to space.
$ fc-match 'sans:charset=!!(Dl_______!!rW+'
DroidSansJapanese.ttf: "Droid Sans" "Regular"
$ fc-match 'sans:lang=ja:charset=!!(Dl_______!!rW+'
DroidSansJapanese.ttf: "Droid Sans" "Regular"
$ fc-match 'sans:lang=en:charset=!!(Dl_______!!rW+'
ukai.ttc: "AR PL UKai CN" "Book"

=> Both of ukai and droid sans have U+97F3,
    all results of default lang (ie. LANG=ja), lang=ja, lang=en is valid.

For "楽" (U+697D), the glyph is invisible in unity8.
Pleace replace '_' to space.
$ fc-match 'sans:charset=!!%g9___/?6HG____'
DroidSansJapanese.ttf: "Droid Sans" "Regular"
$ fc-match 'sans:lang=ja:charset=!!%g9___/?6HG____'
DroidSansJapanese.ttf: "Droid Sans" "Regular"
$ fc-match 'sans:lang=en:charset=!!%g9___/?6HG____'
DroidSansJapanese.ttf: "Droid Sans" "Regular"

=> Because ukai doesn't have U+697D,
    all results of default lang (ie. LANG=ja), lang=ja, lang=en is valid.

$ sudo lsof -p `pidof unity8` | grep font
unity8  2592 phablet  mem    REG        7,0 17151049 113683 /usr/share/fonts/truetype/arphic/ukai.ttc
unity8  2592 phablet  mem    REG        7,0   415552 113610 /usr/share/fonts/truetype/ubuntu-font-family/Ubuntu-L.ttf
unity8  2592 phablet  mem    REG        7,0   333616 113622 /usr/share/fonts/truetype/ubuntu-font-family/Ubuntu-B.ttf
unity8  2592 phablet  mem    REG        7,0   353824 113613 /usr/share/fonts/truetype/ubuntu-font-family/Ubuntu-R.ttf

=> Why loads ukai.ttc instead of DroidSansJapanese.ttf?

** Affects: ubuntu-translations
     Importance: High
         Status: Triaged

** Affects: ubuntu-touch-meta (Ubuntu)
     Importance: Medium
     Assignee: Gunnar Hjalmarsson (gunnarhj)
         Status: In Progress


** Tags: rtm14
-- 
Doesn't load Japanese font on Ubuntu Touch
https://bugs.launchpad.net/bugs/1352142
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