fast-replacing-respects-condition.yaml

# SPDX-FileCopyrightText: Copyright (c) 2025 Objectionary.com
# SPDX-License-Identifier: MIT
---
input: '[[ a -> [[ x -> Q ]], b -> [[ z -> $, x -> Q ]] ]]'
output: |-
  ⟦
    a ↦ ⟦ x ↦ Φ ⟧,
    b ↦ ⟦ z ↦ ξ, y ↦ Φ ⟧
  ⟧
rules:
  custom:
    - name: rename-next-to-z
      pattern: '[[ !B1, x -> !e1, !B2 ]]'
      result: '[[ !B1, y -> !e1, !B2 ]]'
      when:
        in: ['z', '!B1']