Documents of patterns used for filtering

There's basically no documentation on the pattern matching used to filter resources. The filter component documentation reads like dev documentation, and I'm left to trail-and-error to figure it out. Adding to the confusion is that Maven plugins can implement their own pattern matching/strain of regex. I think the assembly plugin does its own thing. Its frustrating enough when regex doesn't match so can I at least be clear on the algorithm.

For example, I want to set a more specific filter to copy resources. The filename may have anywhere between 1 and 5 characters followed by an extension.

I tried five question marks, but that only matches 5 characters not 4.

<include>?????.changelog</include>

There's no support for something like

<include>?{1,5}.changelog</include>

I see double asterisk in some patterns, suggesting globbing. Can this be stated? Perhaps at one point it was obvious - it may seem too simple to bother with. But the Internet is full of alternatives today and a simple write-up will save a lot of guess-work for newbies and those of us with bad memory.