Allen requested this and with some trial and error I think I got it working.
What this will do is return you to the post in question after editing or creating the post. Consider this beta so expect bugs. (although I think it's working pretty well right now)
This is also in use here at ThreadsDev. The text file is attached.
I've updated the instructions to include what DeepHull has pointed out.
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(although I think it's working pretty well right now) 
