local p = { }
p.getdate = function ( frame )
local stamp = frame.args[1]
local date
if stamp:match( "^20[12]%d%-[0-1]%d%-[0-3]%d" ) then
date = stamp:match("^20[12]%d%-[0-1]%d")
else
date = "ohne Datum"
end
return date or ""
end -- p.getdate
return p