# File lib/sup/message-chunks.rb, line 134
    def view_default! path
      case Config::CONFIG['arch']
        when /darwin/
          cmd = "open '#{path}'"
        else
          cmd = "/usr/bin/run-mailcap --action=view '#{@content_type}:#{path}'"
      end
      debug "running: #{cmd.inspect}"
      BufferManager.shell_out(cmd)
      $? == 0
    end