Crash on format strings with un-escaped quotes in the format element

[goldsteinn]

Take test.py:

import os
print(f"foo -> {os.path.join("bar", "baz")}")

python3 test.py runs successfully and produces foo -> bar/baz

yapf test.py crashes with:

Traceback (most recent call last):
  File "yapf/yapf/yapflib/yapf_api.py", line 198, in FormatCode
    tree = pytree_utils.ParseCodeToTree(unformatted_source)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "yapf/yapf/pytree/pytree_utils.py", line 113, in ParseCodeToTree
    tree = parser_driver.parse_string(code, debug=False)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".local/lib/python3.12/site-packages/yapf_third_party/_ylib2to3/pgen2/driver.py", line 187, in parse_string
    return self.parse_tokens(tokens, debug)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".local/lib/python3.12/site-packages/yapf_third_party/_ylib2to3/pgen2/driver.py", line 156, in parse_tokens
    if p.addtoken(type, value, (prefix, start)):
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".local/lib/python3.12/site-packages/yapf_third_party/_ylib2to3/pgen2/parse.py", line 230, in addtoken
    return self._addtoken(ilabel, type, value, context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".local/lib/python3.12/site-packages/yapf_third_party/_ylib2to3/pgen2/parse.py", line 313, in _addtoken
    raise ParseError('bad input', type, value, context)
yapf_third_party._ylib2to3.pgen2.parse.ParseError: bad input: type=1, value='bar', context=('', (2, 32))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "yapf/yapf/__init__.py", line 238, in _FormatFile
    reformatted_code, encoding, has_change = yapf_api.FormatFile(
                                             ^^^^^^^^^^^^^^^^^^^^
  File "yapf/yapf/yapflib/yapf_api.py", line 88, in FormatFile
    reformatted_source, changed = FormatCode(
                                  ^^^^^^^^^^^
  File "yapf/yapf/yapflib/yapf_api.py", line 201, in FormatCode
    raise errors.YapfError(errors.FormatErrorMsg(e))
                           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "yapf/yapf/yapflib/errors.py", line 37, in FormatErrorMsg
    return '{}:{}:{}: {}'.format(e.args[1][0], e.args[1][1], e.args[1][2], e.msg)
                                 ~~~~~~^^^
IndexError: tuple index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "yapf/yapf/__main__.py", line 18, in <module>
    yapf.run_main()
  File "yapf/yapf/__init__.py", line 377, in run_main
    sys.exit(main(sys.argv))
             ^^^^^^^^^^^^^^
  File "yapf/yapf/__init__.py", line 136, in main
    changed = FormatFiles(
              ^^^^^^^^^^^^
  File "yapf/yapf/__init__.py", line 214, in FormatFiles
    changed |= _FormatFile(filename, lines, style_config, no_local_style,
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "yapf/yapf/__init__.py", line 248, in _FormatFile
    raise errors.YapfError(errors.FormatErrorMsg(e))
                           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "yapf/yapf/yapflib/errors.py", line 37, in FormatErrorMsg
    return '{}:{}:{}: {}'.format(e.args[1][0], e.args[1][1], e.args[1][2], e.msg)
                                 ~~~~~~^^^
IndexError: tuple index out of range