Julian Foad wrote:
You can work out the 'rollbacks' from there (I haven't time right now);
(That sounded like a crass cop-out, but I seriously didn't have a moment more to spare to think about it right then.)
The 'rollback' commands as written in steps 6 and 7 would both error. To achieve such rollbacks, the user would have to first revert, which involves deciding what to revert.
And that seems OK to me. - Julian
