Hello there We have read your message We try to help you.

https://addons.thunderbird.net/en-US/thunderbird/addon/japanese-language-pack-thunder/ You used this add-on? Oké good.That s it for using Windows.

The other story to make it work in Debian, are you using linux Debian interface? The friendly users interface? Is this a up to date version? https://en.wikipedia.org/wiki/Debian(Scanned).

https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes https://fruit.je/utf-8 (Scanned)

For the Japanese language it would be:

1. export LANG=es_JA.UTF-8

Or do you guys use a another method? Yes it could be a bug for Linux.

https://wiki.debian.org/Locale

https://www.gnu.org/savannah-checkouts/gnu/gettext/manual/html_node/The-LANGUAGE-variable.html

Greetings Firefox volunteer.

Hello there again Seisaku.

For direct use in a browser use: Firefox Version 3.0 and newer: Linux:

    Edit -> Preferences -> Content -> Languages -> Choose...

https://www.debian.org/intro/cn.en.html

I assume that after trying to fill this in you are experiencing the problem as described with you. Is that correct?

By using browser Ice Weasel(Firefox).

Troubleshooting

Firefox is consistently crashing on a website:

Run firefox in safe mode (extensions and themes disabled): firefox --safe-mode If this fixes the problem, one of your extensions is the root cause, if not: Create a new firefox profile: firefox --no-remote -P (or from the about:profiles page)

https://wiki.debian.org/Firefox#Troubleshooting

Greetings Firefox volunteer.

I have got two answers sent by Dani Sumo. Thank you for quick responses.

I installed the thunderbird 68.8.0 on Debian 10 through Debian apt package distribution system. I found I forgot installing l10n-ja program (thunderbird-l10n-ja) and I downloaded and installed it. I got the solution about localization to Japanese. One of my troubles was solved. But the problem about switching input-method still remains. The input-method on Debian originally installed was IBUS. The IBUS input-panel is always mounted on the screen. I use it while switching between Anthy(UTF8) and direct input. The Japanese input to Firefox (68.9.0esr) , libreoffice and any other applications has no problem. The Anthy(UTF8) function does not emerge on the panel only on thunderbird. So I cannot input with Japanese and can only with direct input to write an e-mail.

Please give me a good help idea above mentioned input method problem.