bug#23277: md5sum: Output broken when filename contains \n

[Ulrich Sibiller]

Hello,

I observe a strange behaviour for {md5,sha1,sha512}sum on RHEL 6.7:
# sha512sum dat_files/1.000e-01*dat
a66f6f8f8da256d07330a17bea942bba9584e182799dce2a42bc7e882d4d9267c40568644d7f5b63128b286a6393764fc599cc30f687b8dacf86e0a96d87795c 
 dat_files/1.000e-01.dat
\a66f6f8f8da256d07330a17bea942bba9584e182799dce2a42bc7e882d4d9267c40568644d7f5b63128b286a6393764fc599cc30f687b8dacf86e0a96d87795c 
 dat_files/1.000e-01\n.dat

The second file has \n in the name and the output gets a backslash prepended 
which looks wrong to me.

Kind regards,

Ulrich Sibiller
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