in-one-of-attributes.yaml

# SPDX-FileCopyrightText: Copyright (c) 2025 Objectionary.com
# SPDX-License-Identifier: MIT
---
expression: '[[ L> Foo, x -> [[ ]] ]]'
pattern: '[[ !B1, x -> !e1, !B2 ]]'
condition:
  in:
    - [Δ, λ]
    - [𝐵1, 𝐵2]
failure: true