Re: FW: JAR Command and V7R4 default change

On Wed, Jan 22, 2020 at 6:30 AM Michael Smith <msmith@xxxxxxxxxxxxxx> wrote:

So, I think your level of concern mainly depends on whether your PDFs can ever have characters outside of 7-bit "safe" ASCII. If not, then I don't think you should be concerned.

Concern is, 1> can they open the .ZIP, 2> after they open the .ZIP, will the .PDF names be correct 3> after they open the .PDF will the .PDF be correct(as you described).

Well, ZIP and PDF are both binary formats. Unless IBM is doing
something horribly wrong, it's hard to imagine there will be trouble
at (1) or (3). There is a real chance that (2) could pose issues,
judging by this blog post:

https://marcosc.com/2008/12/zip-files-and-encoding-i-hate-you/

Granted, that post is very old, but I don't think the landscape has
changed enough to eliminate the potential for problems that it
illustrates. But you can mitigate it on your end if you have control
over the file names. If you can ensure that the names will only ever
use 7-bit ASCII characters, you will be safe, because then CCSIDs 819
and 1208 will be bit-for-bit identical.

John Y.