For example, using the following tree:

  rootUri
  - sources
    - main
      - main.c
    - vendor
      - khash.h
  - headers
    - C001
      - a.h
    - C002
      - b.h

The following directory paths works:

- `sources/**`  for plain old recursive path
- `headers/C*/` dynamic path
- `missing/`    reported as "not found"
- `missing/*`   expanded as empty result (silent fail)

Note: bakslash paths need to be slash-converted to avoid be considered as "Dynamic"