[issue3092] Wrong unicode size detection in pybench

[Marc-Andre Lemburg]

Marc-Andre Lemburg <mal at egenix.com> added the comment:

On 2008-06-12 22:58, Antoine Pitrou wrote:
> Antoine Pitrou <pitrou at free.fr> added the comment:
> 
> Le jeudi 12 juin 2008 à 20:26 +0000, Marc-Andre Lemburg a écrit :
>> Doesn't chr(100000) raise an exception in UCS2 builds ?
> 
> No, it returns a 2-character string.

Interesting... I wonder how applications will deal with this. They'd
normally expect to get a length 1 string from chr() or unichr().

I think chr() should only behave in this way if given an option.
Otherwise, it will definitely introduce hard to find bugs in
ported applications (and probably even in newly written ones).

Something like chr(x, surrogates=True) to enable returning
2 code points instead of raising an exception.

>> Note that sys.maxunicode is not available in Python 2.1
>> which is why I chose try-except approach.
> 
> I understand, but is the py3k version of pybench still
> compatible with Python 2.1?

You're right: probably not. Would be great to have the test on the
Py2.x version as well - to see the difference in performance.

Thanks,
-- 
Marc-Andre Lemburg
eGenix.com

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