Language Class Bug!

[eluser]Unknown[/eluser]
Thanks @WanWizard, for the reply and confirmation that is not a bug but missing feature.

Actually i don't hack the core,
since the Language class is created and put into
./system/application/libraries/Language.php as a replacement
and not modify the one in ./system/libraries/Language.php, CMIIW.

Will use your code ;-) Thank you