Module:For related page

local mFor = require('Module:For')
local mArguments = require('Module:Arguments')
local p = {}

function p.forFoo (frame)
 local args = mArguments.getArgs(frame, 
  {parentOnly = true}
 )
 local target
 if args[1] then
  target = args[1]
 else
  local title = mw.title.getCurrentTitle().text
  local titles = {
   mw.ustring.lower(mw.ustring.sub(title, 1, 1)) .. mw.ustring.sub(title, 2),
   title
  }
  local forms = frame.args
  for k, v in ipairs(forms) do
   for i, j in pairs(titles) do
    local lookup = string.format(v, j)
    if mw.title.new(lookup, 0).exists then
     target = lookup
     break
    end
   end
   if target then break end
  end
  target = target or string.format(forms[1], title)
 end

 return mFor._For({frame.args.what, target})
end
return p