[issue13608] remove born-deprecated PyUnicode_AsUnicodeAndSize

[STINNER Victor]

STINNER Victor <victor.stinner at gmail.com> added the comment:

The Py_UNICODE* type is deprecated but since Python 3.3, Py_UNICODE=wchar_t and wchar_t* is a common type on Windows. PyUnicode_AsUnicodeAndSize() is used to encode Python strings to call Windows functions.

PyUnicode_AsUnicodeAndSize() is preferred over PyUnicode_AsWideCharString() because PyUnicode_AsWideCharString() stores the result in the Unicode string and the Unicode string releases the memory automatically later. Calling PyUnicode_AsWideCharString() twice on the same string avoids also the need of encoding the string twice because the result is cached.

I proposed to add a new function using wchar_*t and storing the result in the Unicode string, but the idea was rejected. I don't remember why.

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nosy: +haypo

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