Reposting mends fences...

Riposters do not mend fences, Jackie.

Riposters fence off. Sometimes they fence around. But, either way, they never get around to doing much of anything, least of all mending fences.

If you fence a riposter in, he will just start riposting in circles.

In time, he will dig himself into a hole too deep to crawl out of.

That's the last we'll see of that riposter.

Needless to say, no-one has ever played "last post" for a riposter who has played himself out.