I was trying the example of "writing a parse/formatter" under "Verbatim text".

The python formatter runs successfully. But when I compile the text file with all the definitions included,  an error occurs.


<inserted text>

}

<to be read again>

\endgroup

\buff_verbatim_type_block_verbatim_indeed ...ines

\dostoptagged \csname #2\e...



It could be implemented forcefully, but definitely not an excuse to ignore this error.


Any solutions?