[Bug 491157] Re: language-selector fontconfig overides language fonts for CJK

[Yuan Chao]

My understand is that Noto Sans is not the default fonts for Japanese locale yet. This problem
has been reported. Please refer to #1581160.

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Title:
  language-selector fontconfig overides language fonts for CJK

Status in language-selector package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: language-selector

  Description:	Ubuntu 9.10
  Release:	9.10
  Package-version: language-selector-0.4.18

  Ubuntu's language-selector fontconfig overide system seems to have
  a problem with CJK: particularly with rendering Japanese on a Chinese
  desktop and Chinese on a Japanese desktop (I am not talking about
  Han Unification ambiguities, but text with lang tags).

  close example:

  1. set a Japanese environment with language-selector
  2. start a new desktop session in Japanese
  3. open firefox
  4. go to http://zh.wikipedia.org/zh-cn/ for example

  Results:
  4. Chinese page is rendered mostly with Japanese glyphs
      with fallback to Chinese font for missing glyphs

  Expected
  4. Chinese page rendered in Chinese font

  Notes
  For comparison you can try in Fedora for example
  where rendering will respect the xhtml lang tag of the page.

  ProblemType: Bug
  Architecture: amd64
  Date: Wed Dec  2 10:29:30 2009
  DistroRelease: Ubuntu 9.10
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Alpha amd64 (20091014.1)
  Package: language-selector 0.4.18
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=ja_JP.UTF-8
   LANG=ja_JP.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
  SourcePackage: language-selector
  Uname: Linux 2.6.31-14-generic x86_64
  XsessionErrors:
   (gnome-settings-daemon:1348): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
   (gnome-settings-daemon:1348): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
   (nautilus:1409): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
   (polkit-gnome-authentication-agent-1:1429): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed

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