# File lib/action_mailer/vendor/tmail/net.rb, line 238
238:     def exec( mail )
239:       mail.mime_version = '1.0'
240:       b = mail.body
241:       if NKF.guess(b) != NKF::BINARY
242:         on_text b
243:       else
244:         on_binary b
245:       end
246:     end

     # File lib/action_mailer/vendor/tmail/net.rb, line 254
254:     def on_binary( body )
255:       mail.body = [body].pack('m')
256:       mail.set_content_type 'application', 'octet-stream'
257:       mail.encoding = 'Base64'
258:     end

     # File lib/action_mailer/vendor/tmail/net.rb, line 248
248:     def on_text( body )
249:       mail.body = NKF.nkf('-j -m0', body)
250:       mail.set_content_type 'text', 'plain', {'charset' => 'iso-2022-jp'}
251:       mail.encoding = '7bit'
252:     end