t / t5100 / rfc2047-info-0003on commit Merge branch 'jc/maint-1.6.0-diff-borrow-carefully' into maint-1.6.1 (3f3e2c2)
   1Author: Patrik Fältström
   2Email: paf@nada.kth.se
   3Subject: RFC-HDR care and feeding
   4