(Japanese) Wiki links

Japanese Environment

I hereby describe methods to set up a Japanese environment under Debian etch for your reference. (This should give good reference to other non-European languages.)

Each command is not explained here in detail. Please refer to the manpages.

<!> In order to set up and use not only Japanese environment but also multilingual environment smoothly, please select the locale with UTF-8 encoding.

Required packages for Japanese environment

Following lists required packages for Japanese environment. (For other languages, refer to the language task contents.)

<!>  Read /usr/share/doc/ibus/README.Debian.gz in detail for input method.

<!>  Read Fonts/FontsProprietaryJapaneseFonts for more font hints

What is locale

The locale is used for LANG environment variable to define language environment. It has a structure of xx_YY.ZZZZ and has following meanings:

xx

language codes

yy

country codes 

zzzz

encoding

The language region of Japan is ja_JP but if it is used alone it is treated as tradional ja_JP.eucJP . The language region of US (the best supported) is en_US but if it is used alone it is treated as tradional en_US.ISO8859-1.

For example, the encoding system often used for Japanese are:

UTF-8

recent standard, multilingual compatibility

eucJP

old UNIX standard, only for Japanese

Shift-JIS

old Microsoft standard, only for Japanese

ISO-2022-JP

standard for Japanese e-mail, use only 7 bit code, only for Japanese

ISO-8859-1

old standard for western European languages, ASCII+accented characters, 8 bit code

ASCII

US standard, 7 bit code Simply set LANG=C

These encodings are well thought out to keep them compatible within ASCII code ranges.

If you accidentally haven't created the ja_JP.UTF-8 locale, please execute the following to enable Japanese UTF-8 environment.

$ sudo dpkg-reconfigure locales

Each program behaves differently depending on the set up of language related environment variables.

Here, you have to pay attention to the fact that some program uses PAM (pluggable Authentification Module) and the environment variable set by PAM has priority.

Both /etc/environment and /etc/defaults/locale files define

LANG="ja_JP.UTF-8"

when Japanese is selected during the etch installation process under etch (as of December 2006).

Working with key programs

emacs situation

$ XMODIFIERS=none emacs

In order to adjust Debian menu, place customized configuration in /etc/menu following the method described in /usr/share/doc/menu/html.

vim situation

IBus

Recently IBus has become the most widely used input framework - it's probably the best choice for Japanese input in Debian

There are two Japanese IBus engines: ibus-anthy and ibus-mozc. ibus-mozc is a client of another input project, sponsored by Google? ibus-anthy is more mature? The Ubuntu language-support-input-ja package depends on ibus-anthy - ibus-anthy is probably what you want,

For wheezy, please make sure to use im-config.

$ sudo aptitude -DR install ibus-anthy

The Ubuntu language-support-fonts-ja package depends on ttf-takao-gothic and ttf-takao-mincho,

$ sudo aptitude -DR install ttf-takao