How do you add prefix to links in default language? (i18n setting)

By yookoala on 15 Jul 2009 at 06:43 UTC

I have an i18n site, which use English as default language and Chinese as secondary.

My problem is I want to set prefix to both Chinese and English language.
For example:

http://foobar.com/en/node/xx <-- English site
http://foobar.com/zh_tw/node/xx <-- Chinese site

How should I set this up?