Utilities that perform filename globbing (also known as Pattern Matching Notation) shall do it as specified in the Single UNIX Specification, with the following exceptions:
Range expression (such as [a-z]) can be based on code point order instead of collating element order.
Equivalence class expression (such as [=a=]) and multi-character collating element expression (such as [.ch.]) are optional.
Handling of a multi-character collating element is optional.
This affects at least the following utilities: cpio (cpio>), find (find>), ls (ls>) and tar (tar>).