Where does Codeigniter use $config['charset']

[eluser]sikko[/eluser]
Hi all,
I've got an encoding problem with some characters rendered as: œ
This solved my problem:

Code:

ini_set("default_charset", 'utf-8');

But I want to do it the clean way, so I checked my config file and it contains:

Code:

$config['charset'] = 'UTF-8';

The command

Code:

ini_get("default_charset")

returns an empty string.

So I am wondering where is $config['charset'] used ? (I looked for the code $this->config->item('charset'); and it is'nt used anywhere)