Fossil distinguishes an absent token from an empty one positionally: `C` LF has none and is rejected, `C` SP LF has one empty token and is a present, empty comment. zit implemented §4.2's `token = 1*tchar` literally and rejected the empty form on C and J, which drops the whole artifact — every ticket change with an empty field, every check-in with an empty comment. T and U were already right.

Two tests asserted the old behaviour and now assert the corrected one; a third pins the writer, since --submanifest re-mints every manifest. The RFC text is unchanged; docs/rfcs/erratum/ carries the correction. closed check-in: 5ccb138e6d user: dmestas tags: empty-trailing-token