I think this is an incredibly handy usage of Notepad++'s macro function. Is that criteria for making it a community wiki post?
This decision is entirely up to you. Making a post community wiki will result in the following:
This might make it easier for others to edit your answer, because it's now community-owned, and they don't feel they're changing your answer.
There are no "criteria" for you to decide whether you need to make something community wiki. You never have to. However, if you specifically want others to continue improving your answer, then by all means, make it community wiki, and leave a note for others to see. This would encourage contributions.
Note: I've made this CW myself, so we have a practical example :)
Note: And I've edited it, so there's that, I guess?