system (Rake::AltSystem)

        # File lib/rake/alt_system.rb, line 83
    83:     def system(cmd, *args)
    84:       repaired = (
    85:         if args.empty?
    86:           [repair_command(cmd)]
    87:         elsif runnable = find_runnable(cmd)
    88:           [File.expand_path(runnable), *args]
    89:         else
    90:           # non-existent file
    91:           [cmd, *args]
    92:         end
    93:       )
    94:       kernel_system(*repaired)
    95:     end