Module:Yesno

local p = {} function p.yesno( frame ) local retvals = { yes  = "yes", no   = "", ["¬"] = ""   }    local any = false for k,v in pairs( frame.args ) do       any = true retvals[k] = v   end val = frame.args[1] if (val == nil and not any) or val == '¬' then return retvals['¬'] end val = (val or ''):lower if val == '' then return retvals['blank'] ~= nil and retvals['blank'] or retvals['no'] elseif val == 'n' or val == 'no' or val == '0' then return retvals['no'] elseif val == 'y' or val == 'yes' or val == '1' or retvals['def'] == nil then return retvals['yes'] else return retvals['def'] end end return p