While the situation you describe is simpler, implementing the feature request as suggested would include adding what you want. Take a look at the feature request and add a comment explaining your use case if you feel it is appropriate.

To be seen by developers of Notepad++, you must make a feature request in the correct manner; see HERE for info on how that is done.

Your need feels familiar; please look for existing requests of the same nature before creating a brand new one. If you find an existing request, you can add your support to it, and/or point out any differences you’d like to see from what has already been asked for.