[dreamcompiler]

I would have expected two things with the transition to APFS:

--Certain edge cases of HFS+ were no longer supported or would now be supported differently.

--The various special-case file-manipulation APIs in MacOS would have changed.

Both the above tend to happen to some extent with every major rev of MacOS and even some minor revs, and they necessitate substantial code changes. The fact that the old code still "just works" with the APFS change I find surprising.