This worked. This code ran, and the result was acceptable to Email::Sender::Transport::Print->new().

In some ways I'm more confused than ever, though, because when I display the filehandle in perldb the new code shows me

  DB<4> x $sm
0  IO::Handle=GLOB(0x80695a1c8)
   -> *Symbol::GEN0
         FileHandle({*Symbol::GEN0}) => fileno(7)
  DB<5> n

[download]

while isn't IO::Handle anywhere, and duplicates the FileHandle shown in the original code (but wrapped a level down). Still, it's clearly different, and it works, so I won't complain :-).

In reply to Re^2: Almost certainly a module documentation issue by dd-b
in thread Almost certainly a module documentation issue by dd-b

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