Module:German coord convert

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local p = {}
function p.main(frame)
   local c = args[1] or ''
   if mw.ustring.match(c, '^[%s]*([0-9][0-9]*)[%s]*/[%s]*([0-9][0-9]*)[%s]*/[%s]*([0-9][0-9%.]*)[%s]*/[%s]*[NEO][%s]*$') then
      local d, m, s = mw.ustring.match(c, '^[%s]*([0-9][0-9]*)[%s]*/[%s]*([0-9][0-9]*)[%s]*/[%s]*([0-9][0-9%.]*)[%s]*/[%s]*[NEO][%s]*$')
      return math.round(1000000*(tonumber(d) + tonumber(m)/60 + tonumber(s)/3600))/1000000
   end
   if mw.ustring.match(c, '^[%s]*([0-9][0-9]*)[%s]*/[%s]*([0-9][0-9]*)[%s]*/[%s]*([0-9][0-9%.]*)[%s]*/[%s]*[SW][%s]*$') then
      local d, m, s = mw.ustring.match(c, '^[%s]*([0-9][0-9]*)[%s]*/[%s]*([0-9][0-9]*)[%s]*/[%s]*([0-9][0-9%.]*)[%s]*/[%s]*[SW][%s]*$')
      return -1*math.round(1000000*(tonumber(d) + tonumber(m)/60 + tonumber(s)/3600))/1000000
   end
   return c
end