JBoss Portal 2.4 (latest CVS version and future 2.4.RC1) handles encoding gracefully. Everything is encoded/decoded in UTF8 : form parameters encoded with content type x-www-formurlencoded and query parameters. If you can give a try and feedback.
Then we havent looked yet at RTL support : http://en.wikipedia.org/wiki/Bi-directional_text.
We had no contribution for such languages and we don't have the knowledge for it.
But nothing prevent you from writing the correct resource file for it.
I haven't this knowledge too !!!
but this is more than a ressource file, because for arabian language for example, text must be writting from right to left... and panel could be arrange like this too...
Liferay demo is a good example of that, have a look here : http://demo.liferay.net/c/portal/layout?p_l_id=default
thanks for your quick answer
Is there any news for RTL languages support?
Something like Hebrew?
for example beeing able to change from English (LTR) to Hebrew (RTL)?