bzr2gitignore

#!/usr/bin/env ruby

File.open('.bzrignore') { |bzrignore|
  bzrignore.each_line { |line|
    case line
    when /^\#/, /^\s*$/
      next
    else
      line.strip!
      dir, pattern = File.split(line)
      if File.directory?(dir)
        File.open(File.join(dir, '.gitignore'), 'a') { |gitignore|
          gitignore.puts pattern
        }
      end
    end
  }
}