how to hide server side language on a CI site?

[eluser]zdknudsen[/eluser]
All this feature does, is allow urls like domain.com/mailer/index/123/en.html (or whatever suffix you've chosen) to not return a 404 error. The standard urls will still work.

You have to manually add .html to all your links (or use the codeigniter helpers that create links, which will automaticly add base_url, suffix, etc.).