[Python-Dev] Decoding incomplete unicode

["Martin v. Löwis"]

> We do need to extend the API between the stream codec
> and the encode/decode functions, no doubt about that.
> However, this is an extension that is well hidden from
> the user of the codec and won't break code.

So you agree to the part of Walter's change that introduces
new C functions (PyUnicode_DecodeUTF7Stateful etc)?

I think most of the patch can be discarded: there is no
need for .encode and .decode to take an additional argument.
It is only necessary that the StreamReader and StreamWriter
are stateful, and that only for a selected subset of codecs.

Marc-Andre, if the original patch (diff.txt) was applied:
What *specific* change in that patch would break code?
What *specific* code (C or Python) would break under that
change?

I believe the original patch can be applied as-is, and
does not cause any breakage. It also introduces a change
between the codec and the encode/decode functions that is
well hidden from the user of the codec.

Regards,
Martin