Credo.ConfigFile.merge

You're seeing just the function merge, go back to Credo.ConfigFile module for more information.

Merges the given structs from left to right, meaning that later entries overwrites earlier ones.

merge(base, other)

Any options in other will overwrite those in base.

The files: field is merged, meaning that you can define included and/or excluded and only override the given one.

The checks: field is merged.