So, here is full (?) manual how to japanese Your SliTaz.
1. Install ´glibc-locale´ package to work with different locales. Just follow this link: http://tazpanel:82/pkgs.cgi?do=Install&repo=Any&pkg=glibc-locale
2. To generate Japan locale (via TazPanel) You can just follow this link: http://tazpanel:82/settings.cgi?gen_locale=ja_JP
Log out and log in. Now system should know Japanese date format, monetary etc.
* You can see only 2 entry of SliTaz menu on Japan, but You can translate them yourself (open files in /usr/share/applications and /usr/share/desktop-directories as text) and share here with other Japanese SliTaz users.
* You can add programs translation (files with ´.mo´ at end) to /usr/share/locale/ja/LC_MESSAGES
You can find them in other linuxes, packages, sources etc. (match programs versions!)
After You have collect some amount of this translations, You can share them and ask maintainers (or me) to create packages ´locale-jp´ and ´locale-jp-extra´ (see content of similar packages ´locale-fr´, ´locale-fr-extra´ etc. for guide).
3. Leave default settings in /etc/X11/xorg.conf.d/40-evdev.conf and /etc/X11/xorg.conf.d/40-Keyboard.conf to have US keyboard.
4. Install ´scim´, ´scim-tables-base´, ´scim-tables-ja´ packages. Follow link: http://tazpanel:82/pkgs.cgi?do=Install&repo=Any&pkg=scim-tables-ja
* As we can see in log, append Your file /home/tux/.config/openbox/autostart.sh with strings:
export XMODIFIERS=@im=SCIM
export XIM="scim"
export XINPUT="xim"
export XIM_PROGRAM="scim -d"
export GTK_IM_MODULE=scim
export QT_IM_MODULE=scim
scim -d &
Log out and log in. Now You can see new icon (keyboard) on top panel. Right click on it → SCIM Setup → Global Setup → Keyboard Layout: Japanese → Apply. [Maybe log out needed?]
5. Test now. Open Leafpad, right click on page, check ´Input Method → SCIM Input Method´. Press ‹Ctrl›+‹Space›, You can type Your Japanese text now, and bottom SCIM panel appears with some useful settings. To swith back to English press ‹Ctrl›+‹Space› again.
Not all programs have context menu with ´Input Method´, and ´SCIM Input Method´ is not default for me, and there is an issue…
Also, this thread in LinuxMint forum is interesting too: http://forums.linuxmint.com/viewtopic.php?f=42&t=75792