[issue6815] UnicodeDecodeError in os.path.expandvars

[Martin v. Löwis]

Martin v. Löwis <martin at v.loewis.de> added the comment:

I think the patch is incorrect. It shouldn't do any encoding conversion, but perform the expanding completely in Unicode strings.

For 2.x, I recommend to close this as "won't fix". Expanding a Unicode strings is just not supported. If it was supported, it should be supported correctly, i.e. allowing both environment variable names and environment variable values to have non-ASCII characters in them, and, on Windows, even non-MBCS characters.

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