YAML / Nested leaf merge

YAML Nested Mapping Leaf Merge

This page has a stable URL for review, documentation, and implementation comparison. The fixture tabs show merge inputs and output; the contract tabs show JSON and compact ruleset renderings with stable IDs and deterministic ownership.

Advanced .yml advanced leaf mergenested leavesdestination leaf winsyamlnested_mapping_leavesstable_pathnative_read_portable_writenormalize_tracked_layout_merge

Fixture sources

JSON fixture: structuredmerge-fixtures/yaml/slice-720-advanced-leaf-merge/nested-mapping-leaf-merge.json

Compact ruleset: structuredmerge-fixtures/rulesets/yaml/slice-720-advanced-leaf-merge/nested-mapping-leaf-merge.smrules

Fixture view

patient:
  demographics:
    name:
      given: Pat
      family: Template
    contact:
      email: [email protected]
      phone: 555-0100
  care_plan:
    status: draft
    goals:
      mobility: walk daily
      nutrition: low sodium

Contract view

{
  "contract_id": "yaml-nested-mapping-leaf-merge",
  "format": "yaml",
  "owners": "nested_mapping_leaves",
  "match": "stable_path",
  "read": "native_read_portable_write",
  "attach": "normalize_tracked_layout_merge",
  "comment_style": "hash_comment",
  "render": "yaml_mappings_and_sequences",
  "capabilities": {
    "nested_leaf_merge": true,
    "destination_leaf_wins": true,
    "template_missing_leaf_adds": true
  }
}