Hi Robin!

About your first question on custom language codes; not really difficult. We did some adding of Northern Sami and a couple of other unsupported languages in my last project. I assume that the codes do not already appear in EPiServer's website language manager in admin mode, which means that your OS have no support for it yet. Here is a short PowerShell script registering all cultures in the same directory with Windows, after running it you will find that you can add codes in EPi Admin (and yes, I shamelessly nicked some parts of a larger script written by one of my collegues back in the day).

[System.Reflection.Assembly]::Load("sysglobl, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL") | out-null
 
function RegisterCulture([string]$ldml,[string]$culture){
  $builder = [System.Globalization.CultureAndRegionInfoBuilder]::CreateFromLdml((get-item $ldml).FullName)
  $builder.Register()
}

dir *.ldml | %{
  RegisterCulture $_.FullName $_.BaseName
}

There is no error handling as you can see so it will crash if there is something wrong with your files or if the culture already exists, to resolve this you can add try-catch statements and first try to unregister before registering, like so:

[System.Globalization.CultureAndRegionInfoBuilder]::UnRegister($culture)

After this is just a matter of creating a couple of culture LDML files to register. I could see if I can dig up some file example for you should you need one, but I remember they are rather long.

Have a good weekend1

//Mathias

Mathias: Thanks alot!

No problem :) //Mathias