Module:RSI

-- Optionally add "https://robertsspaceindustries.com/" to url if it is not present. local p = {} function p.rsi_url(frame) local base_url = "https://robertsspaceindustries.com/" local url = frame.args[1] local return_val if (string.sub(url,1,string.len(base_url))==base_url) then return_val = url else return_val = base_url .. url end return return_val end return p