want("#139") -- match
want("#134") -- clockplus
fromSystem("clocktime")

mins = match(input, "+<number>")
if mins ~= nil then
  time = clocktime("x:xx")
  lentime = #time
  mins = tonumber(mins)
  
  -- Note: it seems that exceptions (e.g. attempt to call nil)
  -- in return statements are not reported properly. They show up
  -- as appearing in "loader:34".

  futuretime = clockplus(time, mins)
  log(futuretime)
  return futuretime
end