[[!comment format=mdwn
 username="joey"
 subject="""comment 4"""
 date="2023-05-15T19:40:59Z"
 content="""
Thanks @aurtzy, that is a great observation! And a feature I was not
actually aware of.

So, I think that documenting this should be sufficient.

(The `glob(7)` man page does document POSIX character classes as working in
globs, so this is a fairly standard thing.)
"""]]
