[issue12801] C realpath not used by os.path.realpath

[STINNER Victor]

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

The Python implementation (os.path.realpath) was introduced 10 years ago by the issue #461781.

The Python implemtation has known bugs:

 - #9949: os.path.realpath on Windows does not follow symbolic links
 - #11397: os.path.realpath() may produce incorrect results

See also the issue #1298813: _Py_wrealpath() must use canonicalize_file_name() if available.

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