[issue1754] WindowsError messages are not properly encoded

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc added the comment:

I think this is not possible if we want to preserve compatibility; at
least, str(e.strerror) must not fail.

I can see different solutions:
1) Don't fix, and upgrade to python 3.0
2) Store an additional e.unicodeerror member, use it in a new
EnvironmentError.__unicode__ method, and call this from PyErr_Display.
3) Force FormatMessage to return US-English messages.

My preferred being 1): python2.5 is mostly encoding-naive, python3 is
unicode aware, and I am not sure we want python2.6 contain both code.
Other opinions?

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<http://bugs.python.org/issue1754>
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