Module:Yesno

-- Function allowing for consistent treatment of boolean-like wikitext input. -- It works similarly to the template. return function (val, default) val = type(val) == 'string' and val:lower or val -- put in lower case if val == nil then return nil elseif val == false or val == 'no' or val == 'n' or val == 'false' or tonumber(val) == 0 then return false elseif val == true or val == 'yes' or val == 'y' or val == 'true' or tonumber(val) == 1 then return true else return default end end