Normalization

Normalization keeps baselines stable across runs:

ansi is "semantic" (keep styling as structured segments) or "strip" (text only).
masks replace dynamic values everywhere before comparison, so timestamps, UUIDs, and temp paths don't cause false diffs. Each mask has a name, a pattern (a regular expression), and a replacement.

json

{
  "name": "uuid",
  "pattern": "\\b[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\\b",
  "replacement": "<uuid>"
}

Dungbeetle ships sensible default masks; rules you add are applied on top. See the schema for the field reference.

Normalization ​