internet-radio-recorder/htdocs/podcasts/radiowelt/app/podcast.cfg

{
  title = 'radioWelt',
  subtitle = 'Neues und Spannendes',
  episodes_to_keep = 6,
  match = function(meta)
    -- lua string match/find: http://www.lua.org/manual/5.1/manual.html#5.4.1
    local lo_ti = meta.DC_title:lower()
    if lo_ti:find('^radiowelt') then
      -- starting before noon
      local year,month,day,hour,minute = meta.DC_format_timestart:match("(%d%d%d%d)-(%d%d)-(%d%d)T(%d%d):(%d%d):%d%d%+(%d%d):(%d%d)")
      return hour < '12'
    end
    return false
  end,
}