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Attached is a more universal patch that update headers with its original format and token replacement. Ideally footer / no-result-behavior should have same update but I don't bother include these in my patch.

#6 patch has some bug that has conflicts in settings. Updated by using drupalSettings

- switched issue to 2.x-dev
- created MR
- extended code to handle footer the same way

Reviewed and tested on the issue fork by @reszli

Thanks all! I tested it and added dependency injection to ShowMoreEventSubscriber

ivnish → closed merge request !5

Automatically closed - issue fixed for 2 weeks with no activity.