Script to delete merged git branches, and preserve ones you care about

git-delete-merged-branches

#!/usr/bin/env ruby

keep = `git config git-delete-merged-branches.persist`.strip.split(',')
puts "preserving: #{keep.join(', ')}"

current_branch = `git rev-parse --abbrev-ref HEAD`.strip
`git branch --merged`.lines.each do |line|
  next if line =~ /\A\* /
  branch, target = line.strip.split(' -> ', 2)
  next if keep.include?(branch) || keep.include?(target)
  #puts "would kill: #{branch}"
  system 'git', 'branch', '-d', branch
end