[Bug 713950] Re: Improvement for zh-tw fontconfig settings of language-selector

[Gunnar Hjalmarsson]

On 2014-04-08 16:16, Keng-Yu Lin wrote:
> the patch in comment 21 is not in Trusty. can you merge the patch
> for Trusty?

Well, the simple answer is no.

This bug report was closed almost three years ago, and things have
evolved since. In trusty Droid Sans is the main font for rendering
Chinese, and the latest relevant bug report is bug #1227034. If there is
a need for further tweaking, we have to start from the current
configuration.

Please add a comment to bug #1227034, specifying what the problem is, if
you have found issues with the latest Chinese font configuration.

** Changed in: language-selector (Ubuntu)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/713950

Title:
  Improvement for zh-tw fontconfig settings of language-selector

Status in “language-selector” package in Ubuntu:
  Fix Released

Bug description:
  Binary package hint: language-selector

  Now the setting of 69-language-selector-zh-tw.conf picks up the Latin
  fonts first, then fallback to Chinese fonts. By default, ubuntu only
  installs DejaVu font family and WenQuanYi Micro Hei font.

  DejaVu is a high quality Latin fontfamily which has ExtraLight,
  Condensed, Book, Condensed Italic...and many more styles. WenQuanYi
  Micro Hei font covers Latin, Chinese, Japanese and Korean, but only
  has Regular, Italic, Bold and Bold Italic styles.

  However, there is no need to pick up the Latin fonts first. I am here
  to suggest a better configuration by the reasons below:

  1. As far as I have known, WenQuanYi Micro Hei font provied all the
  typefaces which DejaVu fontfamily covers, but lack of Condensed,
  EtralLight and some other styles.

  2. The order of languages most used by Chinese (Taiwan) users is:
  Chinese > English > Japanese > Korean > other Western languages(eg.
  French, Spanish, German, Russia...). Ideally, the system should select
  the best fonts having Chinese (Taiwan) characters first, then go to
  the best Latin fonts to meet Chinese (Taiwan) users' need.

  3. There is no evidence indicating mixing Latin characters provided by
  Latin fonts with Chinese characters provided by CJK fonts will be the
  best default experience. Actullay, that will sacrifice the consistency
  when there is Latin and CJK text displaying on the screen at the same
  time, because Latin characters and CJK characters are in different
  flavors. However, many users insist on using DejaVu fontfamily to
  display the Latin characters. The same visual appearance is reserved
  by the proposed configuration.

  3. Selecting fonts including Chinese (Taiwan) characters first in the
  configuration provides the best compatibilty for Chinese characters
  with those programs which do not follow the fallback machenism of
  fontconfig, such as Evince, to be readable. The programs like that
  only pick up the first font, DejaVu font, and displaying squares for
  Chinese characters. With this improved configuration, the problem
  still can be found out by the "Latin characters" part which should be
  DejaVu but not WenQuanYi Micro Hei.

  4. People still have the freedom to edit the configuration or add new
  rules, there is no harm selecting those font strings including Chinese
  (Taiwan) characters first in zh_TW configuration.

  Please consider to choose the CJK fonts before the Latin fonts.

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