Message 106141 - Python tracker

> sys.argv is decoded with the file system encoding

IIRC this is not exact. Py_Main signature is 
    Py_Main(int argc, wchar_t **argv)
then PyUnicode_FromWideChar is used, and there is no conversion (except from UCS4 to UCS2).
The wchar_t strings themselves are built with mbstowcs(), the file system encoding is not used.