Lysandros Nikolaou <lisandros...@gmail.com> added the comment:
> + Py_ssize_t linesize = PyUnicode_GET_LENGTH(line);
This line is wrong though, since PyUnicode_GET_LENGTH returns the length in
code points and PyUnicode_DecodeUTF8 expects the number of bytes. For non-ascii
input this would push the caret further to the left. For example:
$ ./python.exe
Python 3.10.0a0 (heads/master-dirty:e2fb8a2c42, Jun 12 2020, 20:22:52)
[Clang 11.0.0 (clang-1100.0.33.8)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> "Ṕýţĥòñ" +
File "<stdin>", line 1
"Ṕýţĥòñ" +
^
SyntaxError: invalid syntax
----------
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<https://bugs.python.org/issue40958>
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