Backward Output Brainfuck

Nerd sniped myself after seeing this Code Golf answer. This script takes input on STDIN and outputs a Brainfuck program that outputs the input. It also accepts an optional command line argument that specifies the line with of the output (default: 80).

Example:

$ echo '      ++++         +++
    +[>++++    ++[>+<-][
   <]<  -]>   >++    +++
  +.-   ---   ---    ---
 --.+++++++         +++
        +++       .++
        +++      +.-
        ---    -----.--.' | python backward_output_bf.py

Output:

++++++++++[->+>+<<]>>[-<<+>>]<++++++++++++++++++++++[->+>+<<]>>[-<<+>>]<++++++++
+++[->+>+<<]>>[-<<+>>]<++[->+>+<<]>>[-<<+>>]<+[->+>+<<]>>[-<<+>>]<++++++++++++++
[->+>+<<]>>[-<<+>>]<++[->+>+<<]>>[-<<+>>]<+++++++++++++++++++++++++++++[->+>+<<]
>>[-<<+>>]<++[->+>+<<]>>[-<<+>>]<<<<<<<<<......>....<.........>...<<.>....>.>>>>
>.<.<<<<....<....>..>>>>>.<.<<<<.>>>.<<.>>>>>.<.<<<<<<<.>...>>>>.>>>.<<<.<<<<..>
>.>>>>>.<<.<<<<<...>>>>>.<<<<..<....>...<<.>..>.>>.<.<<...>>...<<...>>...<<....>
>...<<<.>.>>..>.<<.......<.........>...<<.>........>...<.......>>>.<<..<<.>.....
...>...<......>.>>.<.<<<.>........>>...<<....>>.....>.<..>.

Which in turn outputs:

      ++++         +++
    +[>++++    ++[>+<-][
   <]<  -]>   >++    +++
  +.-   ---   ---    ---
 --.+++++++         +++
        +++       .++
        +++      +.-
        ---    -----.--.

License

GNU General Public License, version 2 or later.