Determine whether children of hidden directories or bundles should be hidden

[jakewilliami]

Some hidden files may be directories containing normal files. Are these normal files hidden, as their parent is?

[jakewilliami]

Situations in which to consider this question should be:

• A file's parent is a package or bundle; or
• A file's parent is a ZFS mount point.

This is an important question, because some "hidden file" definitions I've seen state that a file or directory is hidden if it's not included in an ordinary directory listing. While packages or bundles hide the contents of the directory, you can still ls its contents ordinarily. Same with ZFS. Does this make children of these file types hidden?