[Python-Dev] Re: [XML-SIG] printing Unicode xml to StringIO

[M.-A. Lemburg]

Guido van Rossum wrote:

>>>- Since we added a note to the docs that StringIO supports Unicode, we
>>>  clearly should continue to support that, and it's a bug if it
>>>  doesn't.
>>>
>>I still believe that the docs are wrong, but nevermind. I'll fix
>>StringIO.py to continue to support Unicode in addition to strings
>>and buffer objects. It's basically only about special casing
>>Unicode in the .write() method.
>>
> 
> Thanks.
> 
> 
>>BTW, I was never aware of the doc changes in this area and the 
>>test suite didn't bring up the issues either.
>>
> 
> Can you please add something to the test suite that makes sure this
> feature works?
> 
> 
>>>- OTOH, Unicode for cStringIO should be considered at best a feature
>>>  request.  I don't mind if cStringIO doesn't support Unicode -- it
>>>  never has, AFAIK, so it won't break much code.  I don't believe it's
>>>  much faster than StringIO, unless you use the C API (like cPickle
>>>  does).
>>>
>>Unicode support in cStringIO would require a new implementation
>>since the machinery uses raw byte buffers.
>>
> 
> That's why I don't care much about it. :-)
> 
> 
>>>- Of course, when Unicode is supported, mixing ASCII and Unicode
>>>  should be supported too.  (But not necessarily mixing 8-bit strings
>>>  containing characters in the range \200-\377, since there's no
>>>  default encoding for this range.)
>>>
>>In StringIO.py this is not much of a problem since it uses
>>a list of snippets. Note that this is also why StringIO.py "supported"
>>Unicode in the first place (and that's why I think it was more an
>>artifact of the implementation than true intent).
>>
> 
> But it was useful! :-)
> 
> 
>>>- Since this changed from 2.1 to 2.2, we should restore this
>>>  capability in 2.2.1; I would say that 2.2.1 can't go out until this
>>>  is fixed.
>>>
> 
> Try to mark the checkin messages as "2.2.1 bugfix", for the 2.2.1
> patch czar.


Checked in.

-- 
Marc-Andre Lemburg
CEO eGenix.com Software GmbH
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