YAML / anchor / alias / merge

Separate YAML anchors, aliases and merge expansion

Separate the reuse source from the expanded result, then review merge precedence, unsupported syntax and circular references. User input is never parsed; use synthetic cases only.

Review decisions Save review note

Five review axes

Separate the reuse source, references and merged values to reduce configuration migration mistakes.

anchor → alias → merge precedence → expanded result

Axis	Review
anchor	Record the reusable definition and its scope.
alias	Check which anchor a reference points to.
merge	Make map precedence and overwrites explicit.
unsupported	Do not treat unsupported syntax as successful.
cycle	Never claim a circular reference is expanded.

Safe review order

Record the anchor reuse source.
Verify the alias target.
Check merge precedence and the expanded result.
Reject unsupported or circular cases before real settings.

This page never parses user input or real data. Change real settings only through the existing process after note approval.

Six synthetic cases

case	result
`anchor-basic`	Anchor definition
`alias-reuse`	Alias reuse
`merge-override`	Merge precedence
`unsupported-yaml`	Unsupported
`circular-alias`	Circular reference
`nested-scope`	Nested scope