Black 23.11 cannot parse 3.12 enhanced f-strings

[smcclure17]

Describe the bug

PEP 701 (Python 3.12) introduced the ability to reuse the same quote type (e.g. ") within f-strings. Black is unable to parse this new structure, causing the formatter to fail.

To Reproduce

For example, take this code:

name = "cool_guy"
works = f"hello {cool_guy.replace('_', ' ')}"
broken = f"hello {cool_guy.replace("_", " ")}"  # now possible in Python 3.12

And run it with these arguments:

$ black file.py

The resulting error is:

Cannot parse: 3:36: broken = f"hello {cool_guy.replace("_", " ")}"
Oh no! 💥 💔 💥
1 file failed to reformat.

Expected behavior

Expect Black to succeed and properly format the file.

Environment

• Black's version: 23.11.0
• OS and Python version: MacOS/3.12.0

Additional context

None

[hauntsaninja]

Duplicate of #3746