Comment 5 for bug 501166

From the duplicate:

Martin [gz] says:
 - str(traceback) is bytes
 in those bytes [here]:
 - filenames are in mbcs
 - code lines are in the encoding of the file that the source is from
 - and the bytes for the error are in the encoding of the error - e.g. totally arbitrary.

We have to defend against three sets of different encodings.

Robert Collins wrote 20 hours ago: #2
Looks like we need to port a copy of the underlying things, and get the encoding etc sorted out in the root data.