[Python-Dev] PyUnicode_Resize

Amaury Forgeot d'Arc amauryfa at gmail.com
Tue Nov 22 14:33:18 CET 2011

2011/11/22 Victor Stinner <victor.stinner at haypocalc.com>

> Hi,
> In Python 3.2, PyUnicode_Resize() expects a number of Py_UNICODE units,
> whereas Python 3.3 expects a number of characters.
> It is tricky to convert a number of Py_UNICODE units to a number of
> characters, so it is diffcult to provide a backward compatibility
> PyUnicode_Resize() function taking a number of Py_UNICODE units in Python
> 3.3.
> Should we rename PyUnicode_Resize() in Python 3.3 to avoid surprising bugs?
> The issue only concerns Windows with non-BMP characters, so a very rare use
> case.
> The easiest solution is to do nothing in Python 3.3: the API changed, but
> it
> doesn't really matter. Developers just have to be careful on this
> particular
> issue (which is not well documented today).

+1. A note in the "Porting C code" section of whatsnew/3.3 should be enough.

Amaury Forgeot d'Arc
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