17db96d56Sopenharmony_ciMIME-Version: 1.0
27db96d56Sopenharmony_ciContent-Type: multipart/mixed; boundary="----- =_aaaaaaaaaa0"
37db96d56Sopenharmony_ci
47db96d56Sopenharmony_ci------- =_aaaaaaaaaa0
57db96d56Sopenharmony_ciContent-Type: multipart/mixed; boundary="----- =_aaaaaaaaaa1"
67db96d56Sopenharmony_ciContent-ID: <20592.1022586929.1@example.com>
77db96d56Sopenharmony_ci
87db96d56Sopenharmony_ci------- =_aaaaaaaaaa1
97db96d56Sopenharmony_ciContent-Type: multipart/alternative; boundary="----- =_aaaaaaaaaa2"
107db96d56Sopenharmony_ciContent-ID: <20592.1022586929.2@example.com>
117db96d56Sopenharmony_ci
127db96d56Sopenharmony_ci------- =_aaaaaaaaaa2
137db96d56Sopenharmony_ciContent-Type: text/plain
147db96d56Sopenharmony_ciContent-ID: <20592.1022586929.3@example.com>
157db96d56Sopenharmony_ciContent-Description: very tricky
167db96d56Sopenharmony_ciContent-Transfer-Encoding: 7bit
177db96d56Sopenharmony_ci
187db96d56Sopenharmony_ci
197db96d56Sopenharmony_ciUnlike the test test_nested-multiples-with-internal-boundary, this
207db96d56Sopenharmony_cipiece of text not only contains the outer boundary tags 
217db96d56Sopenharmony_ci------- =_aaaaaaaaaa1 
227db96d56Sopenharmony_ciand 
237db96d56Sopenharmony_ci------- =_aaaaaaaaaa0 
247db96d56Sopenharmony_cibut puts them at the start of a line! And, to be even nastier, it
257db96d56Sopenharmony_cieven includes a couple of end tags, such as this one:
267db96d56Sopenharmony_ci
277db96d56Sopenharmony_ci------- =_aaaaaaaaaa1--
287db96d56Sopenharmony_ci
297db96d56Sopenharmony_ciand this one, which is from a multipart we haven't even seen yet!
307db96d56Sopenharmony_ci
317db96d56Sopenharmony_ci------- =_aaaaaaaaaa4--
327db96d56Sopenharmony_ci
337db96d56Sopenharmony_ciThis will, I'm sure, cause much breakage of MIME parsers. But, as 
347db96d56Sopenharmony_cifar as I can tell, it's perfectly legal. I have not yet ever seen
357db96d56Sopenharmony_cia case of this in the wild, but I've seen *similar* things.
367db96d56Sopenharmony_ci
377db96d56Sopenharmony_ci
387db96d56Sopenharmony_ci------- =_aaaaaaaaaa2
397db96d56Sopenharmony_ciContent-Type: application/octet-stream
407db96d56Sopenharmony_ciContent-ID: <20592.1022586929.4@example.com>
417db96d56Sopenharmony_ciContent-Description: patch2
427db96d56Sopenharmony_ciContent-Transfer-Encoding: base64
437db96d56Sopenharmony_ci
447db96d56Sopenharmony_ciXXX
457db96d56Sopenharmony_ci
467db96d56Sopenharmony_ci------- =_aaaaaaaaaa2--
477db96d56Sopenharmony_ci
487db96d56Sopenharmony_ci------- =_aaaaaaaaaa1
497db96d56Sopenharmony_ciContent-Type: multipart/alternative; boundary="----- =_aaaaaaaaaa3"
507db96d56Sopenharmony_ciContent-ID: <20592.1022586929.6@example.com>
517db96d56Sopenharmony_ci
527db96d56Sopenharmony_ci------- =_aaaaaaaaaa3
537db96d56Sopenharmony_ciContent-Type: application/octet-stream
547db96d56Sopenharmony_ciContent-ID: <20592.1022586929.7@example.com>
557db96d56Sopenharmony_ciContent-Description: patch3
567db96d56Sopenharmony_ciContent-Transfer-Encoding: base64
577db96d56Sopenharmony_ci
587db96d56Sopenharmony_ciXXX
597db96d56Sopenharmony_ci
607db96d56Sopenharmony_ci------- =_aaaaaaaaaa3
617db96d56Sopenharmony_ciContent-Type: application/octet-stream
627db96d56Sopenharmony_ciContent-ID: <20592.1022586929.8@example.com>
637db96d56Sopenharmony_ciContent-Description: patch4
647db96d56Sopenharmony_ciContent-Transfer-Encoding: base64
657db96d56Sopenharmony_ci
667db96d56Sopenharmony_ciXXX
677db96d56Sopenharmony_ci
687db96d56Sopenharmony_ci------- =_aaaaaaaaaa3--
697db96d56Sopenharmony_ci
707db96d56Sopenharmony_ci------- =_aaaaaaaaaa1
717db96d56Sopenharmony_ciContent-Type: multipart/alternative; boundary="----- =_aaaaaaaaaa4"
727db96d56Sopenharmony_ciContent-ID: <20592.1022586929.10@example.com>
737db96d56Sopenharmony_ci
747db96d56Sopenharmony_ci------- =_aaaaaaaaaa4
757db96d56Sopenharmony_ciContent-Type: application/octet-stream
767db96d56Sopenharmony_ciContent-ID: <20592.1022586929.11@example.com>
777db96d56Sopenharmony_ciContent-Description: patch5
787db96d56Sopenharmony_ciContent-Transfer-Encoding: base64
797db96d56Sopenharmony_ci
807db96d56Sopenharmony_ciXXX
817db96d56Sopenharmony_ci
827db96d56Sopenharmony_ci------- =_aaaaaaaaaa4
837db96d56Sopenharmony_ciContent-Type: application/octet-stream
847db96d56Sopenharmony_ciContent-ID: <20592.1022586929.12@example.com>
857db96d56Sopenharmony_ciContent-Description: patch6
867db96d56Sopenharmony_ciContent-Transfer-Encoding: base64
877db96d56Sopenharmony_ci
887db96d56Sopenharmony_ciXXX
897db96d56Sopenharmony_ci
907db96d56Sopenharmony_ci------- =_aaaaaaaaaa4--
917db96d56Sopenharmony_ci
927db96d56Sopenharmony_ci------- =_aaaaaaaaaa1--
937db96d56Sopenharmony_ci
947db96d56Sopenharmony_ci------- =_aaaaaaaaaa0
957db96d56Sopenharmony_ciContent-Type: text/plain; charset="us-ascii"
967db96d56Sopenharmony_ciContent-ID: <20592.1022586929.15@example.com>
977db96d56Sopenharmony_ci
987db96d56Sopenharmony_ci--
997db96d56Sopenharmony_ciIt's never too late to have a happy childhood.
1007db96d56Sopenharmony_ci
1017db96d56Sopenharmony_ci------- =_aaaaaaaaaa0--
102