Script for removing remote branches which are fully merged into master

git-prune-origin

#!/usr/bin/env ruby

branches = `git branch -a`.split("\n")

remotes = branches.select{|e| e =~ %r(remotes/origin) && e !~ /HEAD/}
remotes.map!{|e| e.match(%r(origin/(.*)))[1] }

locals = branches.select{|e| e !~ %r(/) }
locals.map!{|e| e.match(/[^* ]+/)[0] }

# ignore locally active branches
remotes.reject!{|r| locals.any?{|l| r == l }}

remotes.each do |branch|
  if `git cherry -v origin/master origin/#{branch}`.empty?
    if ARGV.include? '--check'
      puts branch
    else
      `git push origin :#{branch}`
    end
  end
end