Expand Context Link pattern matching logic for multiple character classes

Being able to add multiple character classes to the string that Front targets in contextual linking. Maybe by having some "and/or" logic. For example, Inv: [Letters or digits] OR [letters-digits].

Use case. We get multiple different types of invoices/PO's/Forms and some are just digits, letters, both, or have some sort of dash or slash. Right now, contextual linking does not seem to run in there are different context links with the same target string ,but have different character classes. Only one will run.