NOTE: Ensure latest Arcanist version is installed by running arc upgrade.
- run arc lint or arc lint --cl and see that no errors are displayed
- make some changes in Default or other changelist that would violate coding standards (e.g. inline comment starts with small letter)
- run arc lint or arc lint --cl and see that errors are displayed
- run arc diff or arc diff --cl, which should trigger arc lint internally and same errors/no errors should be displayed
- keep in mind, that only errors on changed lines in a file are displayed