Remove special logic for the "next aeon to check is 0" case.
It shouldn't be able to occur anymore, so we're fine with being loud if it does.
$(rov [-.rov mol `+(u.aey) ~ ~])
:: if old isn't complete, try filling in the gaps.
=? old !(complete old)
- :: if we're looking for changes in revision zero, then the previous
- :: revision only has "file does not exist" results.
- ?: =(u.yon 0)
- %- ~(gas by *(map (pair care path) cach))
- %+ turn ~(tap in q.mol)
- |=(r=(pair care path) [r [~ ~]])
(read-unknown mol(p [%ud (dec u.yon)]) old)
:: if the next aeon we want to compare is in the future, wait again.
=+ aey=(case-to-aeon:ze [%ud u.yon])
