set_item for custom configs

[eluser]maesk[/eluser]
A workaround could be to not call the config item base_url but something else and not use TRUE when you load your custom config, then you could set it by its new name. To call it base_url can create confusion anyways. But it's strange that this (setting an item in custom config) is not in the User Guide. The set_item() function seems to take only two arguments, name and value.