Rule Ordering

Filters run in the order they appear in the calendar config.

For each event:

1. The first filter is evaluated.
2. If the filter matches, its remove/transform behavior is applied.
3. If the filter has stop: true, no later filters run for that event.
4. The next filter is evaluated unless processing stopped or the event was removed.

A filter with no match block always matches.

config.yaml excerpt

filters:
  - description: "Keep on-call events and rename them"
    match:
      summary:
        contains: "schedule: oncall"
    stop: true
    transform:
      summary:
        replace: "On-Call"

  - description: "Remove all other events"
    remove: true

String transforms are deterministic:

1. remove
2. replace
3. trim_prefix
4. trim_suffix
5. replace_text
6. prefix
7. suffix

remove and replace are terminal. If either is set, later string transform steps do not run for that property.