Helpful resources:
- How to Make Windows 10 Accept File Paths Over 260 Characters
- Naming Files, Paths, and Namespaces | Microsoft Docs
I'm still trying to formulate a good test for ensuring the long path support option has been properly enabled but below is what I've come up so far and verified working on a machine that does have this option enabled.
mkdir "testdir/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/01234567890123456789/"This is a path that is at least 519 characters in total length with segments each of which are mostly 10 character directory names. Using the double quote (") seems to be required for this to work from the Windows command shell.