Message 104872 - Python tracker

I think it is helpful to read the pax specification here:

http://www.opengroup.org/onlinepubs/009695399/utilities/pax.html

pax defines (IIUC) that all strings in a pax-compliant tar file are UTF-8 encoded. For the "invalid" option, they offer the alternatives bypass, rename, UTF-8, and write. It may be useful to provide the same options, in some form.