Get access to the trailing string when AllowTrailing is used

[p-h]

I'd like to access the string, reader position, whatever..., after parsing is finished with AllowTrailing. Reading the reader after parsing is finished, doesn't seem to work as it seems to be entirely consumed even if it is not required for the Grammar. I also can't add an additional field to the grammar as I don't want the trailing component to go through the lexer.

[p-h]

I've found a workaround I'm not quite happy with but works: Do not use AllowTrailing and extract the position from the returned error.

I'd still love to know of a cleaner solution.