Truthy rule gives confusing result for common Github Actions yml that uses "on" syntax

[AndrewLaneAtPowerSchool]

The truthy rule seems to see the "on" keyword in the following YAML and think it should be true/false (assuming because on/off can be seen as truthy and falsy?).

Example YML:

name: Run tests

on: [push, pull_request]

jobs:  
  test:
    runs-on: ubuntu-latest

    steps:
    - name: …

Snippet of yamllint output:

  3:1       warning  truthy value should be one of [false, true]  (truthy)
``

Expected: should not throw warning

[andrewimeson]

This is not a false positive. This is a documented and expected behavior. Your options are:

1. Quote the key

   ---
   name: Run tests
   
   "on": [push, pull_request]

2. Disable the rule with a line comment

   ---
   name: Run tests
   
   on: [push, pull_request]  # yamllint disable-line rule:truthy

3. Disable key checking in the yamllint configuration (e.g. .yamllint.yaml)

   ---
   extends: default
   rules:
     truthy:
       check-keys: false

This is a duplicate of #430 and others

[AndrewLaneAtPowerSchool]

Thanks!