Unhandled exception `TypeError: unsupported operand type(s) for -: 'NoneType' and 'int'` when running `gdformat`

[qarmin]

find ./ | grep "\.gd$" | xargs gdformat  --line-length 200

on

extends ORMMaterial3D
func _ready() -> void:
	pass 
	match ( 

cause

Traceback (most recent call last):
  File "/home/rafal/.local/lib/python3.9/site-packages/gdtoolkit/formatter/__main__.py", line 184, in _format_code
    code_parse_tree = parser.parse(code, gather_metadata=True)
  File "/home/rafal/.local/lib/python3.9/site-packages/gdtoolkit/parser/parser.py", line 61, in parse
    self._parser_with_metadata.parse(code)
  File "/home/rafal/.local/lib/python3.9/site-packages/lark/lark.py", line 293, in parse
    return self.parser.parse(text, start=start)
  File "/home/rafal/.local/lib/python3.9/site-packages/lark/parser_frontends.py", line 124, in parse
    return self._parse(token_stream, start, set_parser_state)
  File "/home/rafal/.local/lib/python3.9/site-packages/lark/parser_frontends.py", line 54, in _parse
    return self.parser.parse(input, start, *args)
  File "/home/rafal/.local/lib/python3.9/site-packages/lark/parsers/lalr_parser.py", line 35, in parse
    return self.parser.parse(*args)
  File "/home/rafal/.local/lib/python3.9/site-packages/lark/parsers/lalr_parser.py", line 85, in parse
    action, arg = get_action(token)
  File "/home/rafal/.local/lib/python3.9/site-packages/lark/parsers/lalr_parser.py", line 64, in get_action
    raise UnexpectedToken(token, expected, state=state)
lark.exceptions.UnexpectedToken: Unexpected token Token(_DEDENT, '') at line None, column None.
Expected one of: 
	* LBRACE
	* LSQB
	* LONG_STRING
	* HEX
	* DOLLAR
	* NAME
	* DOT
	* NUMBER
	* AT
	* TILDE
	* MINUS
	* NOT
	* LPAR
	* BIN
	* REGULAR_STRING
	* BANG


During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/rafal/.local/bin/gdformat", line 8, in <module>
    sys.exit(main())
  File "/home/rafal/.local/lib/python3.9/site-packages/gdtoolkit/formatter/__main__.py", line 71, in main
    _format_files(files, line_length, safety_checks)
  File "/home/rafal/.local/lib/python3.9/site-packages/gdtoolkit/formatter/__main__.py", line 146, in _format_files
    success, actually_formatted, formatted_code = _format_code(
  File "/home/rafal/.local/lib/python3.9/site-packages/gdtoolkit/formatter/__main__.py", line 206, in _format_code
    lark_unexpected_token_to_str(e, code),
  File "/home/rafal/.local/lib/python3.9/site-packages/gdtoolkit/common/exceptions.py", line 12, in lark_unexpected_token_to_str
    return f"{exception.get_context(code)}\n{exception}".strip()
  File "/home/rafal/.local/lib/python3.9/site-packages/lark/exceptions.py", line 29, in get_context
    start = max(pos - span, 0)
TypeError: unsupported operand type(s) for -: 'NoneType' and 'int'

[HolonProduction]

This is clearly not a problem of gdtoolkit. The GDScript code in the example is missing a closing parenthesis and that is what the exception complains about.

Expected one of: 
	* LBRACE

[Scony]

That's true, yet the problem is more about handling the exception properly.