[Dev-luatex] missing signature in the manual

Hello, In the manual one can read: This callback allows you to replace the way LuaTeX fetches lexical tokens. function() return <table> token end I think that the argument(s) of function are missing. Also about buildpage_filter: function(<string> extrainfo) end the function doesn't need to return anything? Finally the char_exists callback is not documented but is in callback.list() Thank you! -- Elie