>Strange
>
>The results are the same and correct, using both
>

>upper('D:\tmp\NBB\2021\structure_be-fr-pfs-ci-2021-01-01.pdf')
>

and

lower('D:\tmp\NBB\2021\structure_be-fr-pfs-ci-2021-01-01.pdf')

You mean by oFso? Possible, yours may be newer. Mind you, wine is not an emulator (w.i.n.e, ahem), not a virtual machine, it's a set of simulation API, and I've never bothered to find out which version of windowses does mine pretend to be. For one, I've noticed that a bunch of dialogs - the common dialog, getfile() and such - bear a lot of similarity to the XP days, so it's possible that I'd need to RTFM and find a way to set it to something newer.

But that's not on my priority list... this problem is solved, waiting for the next one.