Base filter "file links" also include external links

Use case or problem

I have a lot of book notes referring to external links, e.g. in YAML links: [Z-Library](URL). I would like to filter out all the note containing Z-Library external link.

I can do with internal links, e.g. file.links.contains("Book") but cannot with external links, e.g. file.links.contains("Z-Library")

Proposed solution

Bases allow “file links” to work with external links as well

Current workaround (optional)

use tag