        # File lib/rake/loaders/makefile.rb, line 10
    10:     def load(fn)
    11:       open(fn) do |mf|
    12:         lines = mf.read
    13:         lines.gsub!(/\\ /, SPACE_MARK)
    14:         lines.gsub!(/#[^\n]*\n/m, "")
    15:         lines.gsub!(/\\\n/, ' ')
    16:         lines.split("\n").each do |line|
    17:           process_line(line)
    18:         end
    19:       end
    20:     end