The pattern `**` does not match files

[tae-soo-kim]

The pattern "/usr/bin/**" does not match files in dir /usr/bin. Other tools will do. There needs to be better documentation about this ** pattern.

[xmo-odoo]

TBF the behaviour of ** is very under-specified: some implementations will interpret it as * while others (bash with globstar) will interpret it as **/*.

Not matching files at all seems rare, but...

[JohnTitor]

It's already documented:

** matches the current directory and arbitrary subdirectories. This sequence must form a single path component, so both **a and b** are invalid and will result in an error. A sequence of more than two consecutive * characters is also invalid.

Use **/* to match files.