This allows you to handle the different settings in Lore (Get the Lore MOD at Curse Gaming).

SetLang(Lang, ToParty, ShowParty);

Function Script

function SetLang(Lang, ToParty, ShowParty, ToGuild)
  if (Lang == nil or ToParty == nil or ShowParty == nil or
  Lang == "" or ToParty == "" or ShowParty == "") then
    DEFAULT_CHAT_FRAME:AddMessage("Usage: SetLang(Lang, ToParty{on|off}, ShowParty{on|off})",1,1,0)
    if (Lang == nil or Lang == "") then
      DEFAULT_CHAT_FRAME:AddMessage("------------------------------------",0.75,1,0)
      DEFAULT_CHAT_FRAME:AddMessage("Possible languages:",1,0.25,0)
      DEFAULT_CHAT_FRAME:AddMessage("------------------------------------",0.75,1,0)
      DEFAULT_CHAT_FRAME:AddMessage("Dark Iron",0.25,1,0)
      DEFAULT_CHAT_FRAME:AddMessage("Kalimag / Elemental",0.25,1,0)
      DEFAULT_CHAT_FRAME:AddMessage("Eredun / Demonic",0.25,1,0)
      DEFAULT_CHAT_FRAME:AddMessage("Tier / Druidic / Yseran",0.25,1,0)
      DEFAULT_CHAT_FRAME:AddMessage("Thelassian / High Elven",0.25,1,0)
      DEFAULT_CHAT_FRAME:AddMessage("Draconic",0.25,1,0)
    end
    return
  end
  ChatFrame1.editBox.language=GetDefaultLanguage("player")
  Lore_Options("setl "..Lang)
  Lore_Options("tp "..ToParty)
  Lore_Options("sp "..ShowParty)
  Lore_BindingInterpreter()
end

Parameters

Arguments

(Lang, ToParty, ShowParty)

Lang 

String - Set the Lore language here.

ToParty 

String - "on" to send the clear words to the PARTY chat.
"off" will not send clear words to the PARTY chat.

ShowParty 

String - "on" to be able to chat in the specified language in the PARTY or the GUILD chat.
"off" only lets you chat in SAY chat in the specified language.

Returns

nil

Example

/script SetLang("Thelassian", "on", "off")

Result

Lore <> Language is now Thelassian
Lore <> translations will now display to party chat
Lore <> party chat will not be translated
Lore <> translations will now display to [selected PC]   (if you have selected a friendly PC)
Lore <> translations will not display to an interpreter  (if no target is selected)

Details

If you have a target (a friendly PC) then you will set him/her as the interpreter ("/lore int"),
but does not work if you are in a party and the party member you have selected is too far away
(Will return "Lore <> translations will not display to an interpreter").