#!/bin/sh
# Cull topic branches

git for-each-ref --merged maint 'refs/heads/*/*' |
while read commit type name
do
	git for-each-ref --count=1 --sort=version:refname \
		--contains "$name" \
		--format="%(taggerdate:iso) #%(refname:strip=2)	$name" \
		refs/tags/
done |
sort |
sed -e 's/[^#]*#//'