sample ledgers and anonymising

[Simon Michael]

Ledger files which illustrate real-world usage are useful for  
documentation, demos, tests and bug reports. But we usually hesitate  
to share our real financial data. And constructing equivalent sample  
ledgers is tedious. ledger and hledger come with some sample ledgers,  
but they are small. ledger's mondo.dat and sample ledgers made with  
hledger's generateledger script are large but consist mostly of hex  
numbers.

So I think there's a need for good automated anonymising/sanitising of  
real ledgers. This would help us more easily submit test cases and bug  
reports, share examples, and collectively learn faster.

Using his time machine, I believe John already added this to ledger.  
Can someone tell us more about this feature ?