Am 24.04.2017 um 22:06 schrieb René Scharfe:

Am 24.04.2017 um 20:24 schrieb Peter Krefting:

quoted

René Scharfe:
Also set the version required to 45 (4.5) for any record that has 
zip64 fields.

Ah, yes indeed.

When I tried to implement this I realized that should set 20 for 
directories, but we use 10 for everything.  Then I compared with InfoZIP 
zip and noticed that they only ever sets 45 for the zip64 end of central 
directory record and 10 for everything else.  So I think we can/should 
keep it as it is, for compatibility's sake -- unless there is a problem 
with an old (but still relevant) extractor.

René