zxing command line utility should not add newline to output on stdout

[jose1711]

Consider the following example:

• prepare input data

  $ dd if=/dev/urandom bs=1 count=1000 of=random_data
  1000+0 records in
  1000+0 records out
  1000 bytes (1.0 kB) copied, 0.00658353 s, 152 kB/s
  
  $ md5sum random_data
  13952535b138a595209fc2296330c3de  random_data
  

• generate qr code using qrencode

  $ qrencode -8 -r random_data -o random_data_qr.png
  

• read data back using zxing and compare against the original

  $ zxing random_data_qr.png > random_data_decoded
  
  $ zxing random_data_qr.png | md5sum -
  643d5e12ba211ceb3edc3ae8a0492a9c  -
  
  $ ls -l random_data random_data_decoded
  -rw-r--r-- 1 jose jose 1000 Jan  2 09:11 random_data
  -rw-r--r-- 1 jose jose 1001 Jan  2 09:13 random_data_decoded
  

  realize that input and output is not equal.

• strip the last character (newline) from the output

  $ truncate --size=-1 random_data_decoded
  $ md5sum random_data_decoded
  13952535b138a595209fc2296330c3de  random_data_decoded
  

  now the sum matches.

My expectation is that zxing does not add the newline character arbitrarily or at least has an option to disable such behavior.