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[Mitsuya Shibata <mty.shibata@xxxxxxxxx>]

Sorry for missing version info. Above result on r157.
I updated to r169, but not fixed yet.

$ sudo lsof -p `pidof unity8` | grep font
unity8  2616 phablet  mem    REG        7,0  4343844  83780 /usr/share/fonts/truetype/nanum/NanumGothic.ttf
unity8  2616 phablet  mem    REG        7,0   415552  83818 /usr/share/fonts/truetype/ubuntu-font-family/Ubuntu-L.ttf
unity8  2616 phablet  mem    REG        7,0   333616  83809 /usr/share/fonts/truetype/ubuntu-font-family/Ubuntu-B.ttf
unity8  2616 phablet  mem    REG        7,0  5177387  83822 /usr/share/fonts/truetype/wqy/wqy-microhei.ttc
unity8  2616 phablet  mem    REG        7,0   353824  83820 /usr/share/fonts/truetype/ubuntu-font-family/Ubuntu-R.ttf
unity8  2616 phablet  mem    REG        7,0   161680  41697 /usr/lib/arm-linux-gnueabihf/libfontconfig.so.1.8.0

NanumGothic.ttf is Korean font. Why is it loaded?

Unity8 maily uses MicroHei and in some parts uses NanumGothic.ttf. It
seems that does not use Japanese font.

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https://bugs.launchpad.net/bugs/1352142

Title:
  Doesn't load Japanese font on Ubuntu Touch

Status in “unity8” package in Ubuntu:
  New

Bug description:
  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?

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