elif unmerge_action == "prune":

				if len(mymatch) == 1:

					continue

				best_version = mymatch[0]

				best_slot = vartree.getslot(best_version)

				best_counter = vartree.dbapi.cpv_counter(best_version)

				for mypkg in mymatch[1:]:

					myslot = vartree.getslot(mypkg)

					mycounter = vartree.dbapi.cpv_counter(mypkg)

					if (myslot == best_slot and mycounter > best_counter) or \

						mypkg == portage.best([mypkg, best_version]):

						if myslot == best_slot:

							if mycounter < best_counter:

								# On slot collision, keep the one with the

								# highest counter since it is the most

								# recently installed.

								continue

						best_version = mypkg

						best_slot = myslot

						best_counter = mycounter

				pkgmap[mykey]["protected"].append(best_version)

				pkgmap[mykey]["selected"] = [mypkg for mypkg in mymatch \

					if mypkg != best_version]

				numselected = numselected + len(pkgmap[mykey]["selected"])

				#unmerge_action in ["prune", clean"]

				# unmerge_action == "clean"